The observation which we get from the three bean seed experiment is that for germination to take place, oxygen, water and temperature are necessary in equal proportion.
The purpose of this study is to show that seeds require equal amounts of oxygen, water, and temperature.
A glass slide, a beaker, a thread, and bean seeds make up the apparatus.
Use a glass slide to bind three ripe bean seeds in three distinct places. Place the slide in the water-filled beaker with the top seed above the water, the middle seed at water level, and the third seed submerged in the water.
Observation: Because the top seed receives oxygen but not water, it does not germinate. As it receives both oxygen and water, the center seed begins to sprout. The seeds at the bottom do not germinate, but they do display the appearance of a little radical as a result of a small amount of dissolved oxygen in the water.
Therefore, a seed requires water, oxygen and temperature in equal proportion.
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Why does atherosclerosis occur with age?
Atherosclerosis occurs with age because of decrease in metabolic activities, growth and weakening of elastic strength of muscle structure.
Atherosclerosis is a disease characterized by hardening of muscles which are present near the heart due to which heart veins and arteries are not able to pump blood properly or suffer from blockages due to uneven contractions. It increases chances of heart attack, diabetes, high blood pressure etc. It occurs in all age groups but maximum cases are seen as the age progresses. It is because with age, the ability of the body to digest fats and other minerals decreases and as a result fats, lipids and cholesterol gets accumulated in the body. This causes fatty lesions and accumulation of inflammatory cells, smooth muscle cells, lipid, and connective tissues in the intima.
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what attire is required at all times for the BSCI 223
For the BSCI 223, closed-toed shoes and lab coats are needed at all times.
Although it is not necessary for living in an oxygenated environment, the enzyme catalase aids in the handling of hazardous oxygen species by organisms.For the BSCI 223, closed-toed shoes and lab coats are needed at all times. The time taken to kill 90% of the population at a particular temperature multiplied by a 10 fold drop is the DRT curve, so keep that in mind. The inability to utilize a spectrophotometer due to its inability to differentiate between living and dead cells (dead cells would block the sun from the bulb because heat does not promote cell lysis). Simply combine bacteria and H2O2 to do the test. The bacteria were catalase positive if bubbles form as a result of oxygen gas generation. The bacteria were catalase negative if no bubbles form.
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Natural selection is based on all of the following aspects except:
a. variation exists within populations.
b. the fittest individual leave the most offspring.
c. there are always competition for resources within populations.
d. the environment tend to create favourable characteristics within populations.
Natural selection is based on all of the following aspects except variation exists within populations.
Natural selection is the differential survival and reproduction of individuals as a result of phenotypic differences. It is a key mechanism of evolution, the change in a population's heritable traits over generations. Natural selection was popularized by Charles Darwin, who contrasted it with artificial selection, which, in his opinion, is intentional, whereas natural selection is not.
Natural selection acts on the phenotype, the characteristics of the organism that actually interact with the environment, but any phenotype that has a genetic (heritable) basis that gives that phenotype a reproductive advantage may become more common in a population.
Over time, this process can result in populations that specialize for specific ecological niches (microevolution), which can lead to speciation (the emergence of new species, macroevolution). In other words, natural selection is an important process in population evolution.
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What pregnancy category is not safe to administer to a pregnant woman under any condition?
Category X is not safe to administer to a pregnant woman under any condition.
What category of drug should not ever be taken by a pregnant woman?The FDA divides different pregnancy-related medications into five categories: A, B, C, D, and X. Category X is categorically forbidden during pregnancy, while Category A is regarded as the safest category. Although there are no appropriate and well-controlled human research and animal reproduction studies have demonstrated a negative effect on the fetus, there may be benefits to using the medicine during pregnancy that outweigh any dangers. Pregnant women may use medications from this class if the advantages to the mother outweigh the risks to the fetus (i.e. a life threatening situation or a serious disease for which safer medication cannot be used or are not efficacious). This class of drugs includes, among others, phenytoin and valproic acid.To learn more about Category X refer to:
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Researchers studying populations of lizards from the genus Gallotia on the Canary Islands compared the protein cytochrome b in different populations. The table shows the number of differences in the cytochrome b protein between different populations. Which conclusion about the relatedness of the lizards do these data support?
The conclusion about the relatedness of the lizards that these data may support is the fact that G. simonyi and G. bravoana are the most closely related (Option B).
What are nucleotide differences in terms of evolution?Nucleotide differences in terms of evolution indicate the percentage of similarity between sequences, which may be generally associated with a common origin in the case of homologous sequences.
Therefore, with this data, we can see that nucleotide differences may be very useful to trace the evolution of species within a given taxonomic genera group.
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a green colored amniotic fluid is received in the laboratory for testing. the color of this specimen most likely indicates the presence of
The green colored amniotic fluid received in the laboratory for testing is an indication of a medical condition known as meconium peritonitis. Meconium peritonitis is a rare, but serious, condition in which the baby’s first stool, or meconium, passes into the amniotic fluid and causes an infection in the baby’s abdomen.
It is possible that the green color in the specimen is due to the presence of bacteria, fungi, or other infectious agents in the fluid. Meconium peritonitis is a medical emergency, as it can cause serious harm to the baby if left untreated.
The infection can cause the baby’s abdomen to become enlarged and can lead to sepsis, a life-threatening condition that can occur when the bloodstream is overwhelmed by bacteria or other toxins. The infection can also cause the baby to have breathing difficulties and, in some cases, can cause the baby’s organs to stop functioning.
In order to diagnose meconium peritonitis, laboratory tests must be conducted to determine the presence of bacteria or other infectious agents in the fluid. This includes testing for the presence of white blood cells, which may indicate an infection.
Other tests, such as analysis of the fluid’s pH and the presence of glucose, can also help to determine if an infection is present. If an infection is present, the baby must be treated with antibiotics as soon as possible to prevent more serious complications.
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What is the best definition of vehicle?
A vehicle is a machine that has an engine and is used to transport people from one location to another, such as a car, bus, or truck.
A vehicle is indeed a machine used to transport people or goods. Wagons, bicycles, motor vehicles (motorbikes, cars, tractor trailers, buses, disabled mobility scooters), railed vehicles (trains, tram lines), watercraft ( ships, submarines), patrol boats (screw-propelled vehicles, speedboat), aircraft (aero planes, helicopters, aerostats), and spacecraft are examples of vehicle.
Land vehicles are broadly classified based on how they steer and start driving forces against by the ground: wheeled, tracked, railed, as well as skied. ISO 3833-1977 is indeed the standard for road kinds of vehicles, terms, and definitions, which is also used in international legislation.
Over one billion bicycles are in use worldwide. There was an estimated 590 million cars but also 205 million motorcycles throughout service worldwide in 2002.
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Which is the best explanation on how does the muscular and skeletal system work together to help the body?
Muscles connect to your skeleton and they contract and move the skeleton along. Your skeletal system is made up of cartilage and calcified bone that work together.
Bones can be pulled by muscles, but they cannot be pushed back into place by muscles. As a result, flexors and extensors work in pairs. A joint in the flexor contracts to bend the limb. In order to extend or straighten the limb at the same joint once the movement is finished, the flexor relaxes and the extensor contracts.
The bones of the skeletal system serve to protect the body's organs, support the weight of the body, and give the body shape. The muscles of the muscular system attach to these bones, pulling on them to allow for movement of the body.
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Why do jewelers need cyanide?
Answer:
Cyanide, in the form of sodium and potassium cyanide, is used in the jewelry manufacturing industry for electroplating, “cyanide bombing,” and metal stripping
Where are a snail's reproductive organs?
The reproductive opening (genital pore) of snail is located on the head of the animal, that is just behind the tentacles.
Where are snail's reproductive organs?Snails and slugs are considered gastropods and are a part of the Molluscs category. Gastropods have distinctive reproductive systems that vary depending on the taxonomic group. They fall into three categories: freshwater, marine, and terrestrial.
The majority of gastropods fertilize internally, although some species of prosobranchs fertilize externally. Gastropods have an unusual reproductive system since they can be either male or female, or hermaphrodites. Hermaphroditic gastropods have the ability to self-fertilize since they contain both the egg and sperm gametes.
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How do I stop my snails from reproducing?
The only fool-proof way to keep snails from reproducing is to keep them separate from each other.
How to stop snails from breeding?One of the easiest way to lessen the number of snails is to feed less fish food. Despite rapid reproduction cycle, snails can reproduce new babies only if they have enough sustenance. Therefore, give only that much food that can be completely consumed by your fish within a few minutes.
One of the way is to distinguish the sexes of your snails and set up a male-only or female-only tank. But, not all species are the same as some are hermaphrodites, which means they can breed independently without the need of the opposite sex to fertilize their eggs.
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The nurse is teaching the client with addison’s disease to anticipate the need for increased glucocorticoid supplementation. when will the client likely need to increase the dose of glucocorticoids?
The nurse should explain that the client may need an increased dosage of glucocorticoids in which situation having wisdom teeth extracted.
Corticosteroids, which are steroid hormones, are a subclass of glucocorticoids. Glucocorticoids are corticosteroids that bind to the glucocorticoid receptor, which is found in nearly every cell of a vertebrate animal.
Hydrocortisone, also known as cortisol, corticosterone, 11-deoxycortisol, and cortisol, is the most common type of glucocorticoid found in vertebrates. Cortisol is the most abundant and potent glucocorticoid in humans and fish. Corticosterone levels are highest in amphibians, reptiles, and birds.
Natural glucocorticoids are steroid hormones with powerful anti-inflammatory effects produced by the human body. Glucocorticoid drugs are typically synthetic compounds with anti-inflammatory properties similar to natural glucocorticoids. The cortex of the adrenal gland produces natural glucocorticoids.
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Match the following types of prokaryotic control of gene regulation with their example.
Transcriptional , Translational, and Post Translational
1. mRNA is quickly degraded by an enzyme in the cell’s cytoplasm before a protein can be made.
2. RNA polymerase needs additional proteins to tightly bind a gene’s promoter.
3. A protein needs to have a phosphate group added to its structure before it can perform its function.
mRNA is quickly degraded by an enzyme in the cell’s cytoplasm before a protein can be made - Translational
RNA polymerase needs additional proteins to tightly bind a gene’s promoter-Transcriptional
A protein needs to have a phosphate group added to its structure before it can perform its function- Post Translational
Prokaryotes were classified within the empire Prokaryote in the two-empire system developed by Édouard Chatton. However, prokaryotes are divided into two domains in the three-domain system based on molecular analysis: Bacteria and Archaea . Eukaryota is the third domain for organisms with nuclei. Prokaryotes are thought to have evolved before eukaryotes in the study of a origins of life.
Aside from the lack of a nucleus, prokaryotes lack mitochondria and the majority of other membrane-bound organelles which distinguish the eukaryotic cell. Prokaryotic gene expression has been primarily regulated at the transcriptional level. Epigenetics, transcription, post-transcription, translation, as well as post-translation all influence eukaryotic gene expression.
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5) regarding the evolution of specialized animal structures, a) the environment imposes identical problems on all animals regardless of where they are found. b) the evolution of structure in an animal is influenced by its ability to learn. c) the simplest animals are those with the most recent appearance among the biota. d) short-term adjustments to environmental changes are often mediated by physiological organ systems. e) the most complex animals are the ones with the most ancient evolutionary origin.
Regarding the evolution of specialized animal structures, d) short-term adjustments to environmental changes are often mediated by physiological organ systems.
Many of the same processes, like breathing, eating, and locomotion, are frequently carried out by structures that are different when we examine various organisms. This is because many creatures have evolved special structures that carry out these tasks and do so in ways that are tailored to meet their particular habitats.
Therefore, in this instance, the structures are specialized to carry out a certain function as well as to meet the requirements of a particular organism.
Hence, the evolution of specialized animal structures are short term adjustments to the environment changes.
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match the function of dna on the left with the appropriate description on the right. i. expression a. stable maintenance and passage of information ii. variation b. duplication of genetic material iii. replication c. potential for alteration iv. storage d. production of a phenotype which of the choices below is correct? question 15 options: i
Expression - production of phenotype
Variation - potential for alteration
Replication - duplication of genetic material
Storage - stable maintenance and passage for information
According to the key dogma of biology, DNA is chosen over RNA for storing information because DNA is less changeable than RNA, expressed in the form of mendelian characters, and also multiplies to generate its own copy. The central dogma also told us that genetic information saved inside DNA is transformed into instruction for manufacturing a specific protein. Mendel named an expression of such a specific protein in the pea plant responsible for certain phenotypic traits. During processes such as cell division, cell development, or even cell repair, replication is the process that is responsible for creating duplicate copies of genetic material. Since RNA is less stable than DNA, it is employed to transform genetic information in order to generate a particular protein.
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1.List the groups of reptiles that are mentioned in the text. Which group is the smallest?
Lizards and snakes, turtles, crocodilians, and the tuatara are reptiles. The tuatara is the smallest group.
All sauropsids, with the exception of birds, fall into the paraphyletic grouping known as Reptilia, which is the most widely used definition of reptiles. The four groups of living reptiles are squamates, crocodilians, turtles, and rhynchocephalians.
Air-breathing vertebrates known as reptiles have unique skin consisting of scales, bony plates, or a combination of both. Crocodiles, snakes, lizards, turtles, and tortoises are some of them.
Characteristics:
Vertebrates include reptiles. They are adamant.Scales fully encircle their entire bodies.They possess frigid blood.Reptiles lay eggs with shells or give birth to live babies.Every species internally fertilises its eggs.Every reptile species has at least one lung.Learn more about tuatara from:
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Cloning of plants from cuttings demonstrates that ________.
A) an individual plant cell cannot de-differentiate and then re-differentiate
B) differentiated plant cells may contain embryonic mRNAs
C) plants lose genetic information in the differentiation process
D) mature plant cells retain the full genetic information needed to carry out the developmental processes to produce a new individual plant
Cloning of plants from cuttings demonstrates that mature plant cells retain the full genetic information needed to carry out the developmental processes to produce a new individual plant.
What do you mean by cloning?Cloning is the process of producing individual organisms with identical or virtually identical DNA, either by natural or artificial means.
Moreover, cloning is a technique scientists use to make exact genetic copies of living things. Genes, cells, tissues, and even whole animals can all be cloned. Some clones already exist in nature.
Cloning describes the processes used to create an exact genetic replica of another cell, tissue or organism.
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What are the benefits of having empathy?
The benefits of having empathy permits us to develop such social relationships. Feeling connected to others is critical for our overall well-being.
Empathy is a valuable and necessary talent. Awareness the requirements of people around you and having a clear understanding of the perception you create with the way you present yourself to others helps improve your communication abilities. This will allow you to better comprehend the demands of your coworkers, clients, family, and friends, as well as establish social ties.
The ties we share with individuals around us are referred to as social connections. Empathy allows us to form such social bonds. Feeling connected to others is critical for our overall well-being. It serves as the foundation of human connections, allowing us to feel respected, loved, and cared for.
Being connected to people is beneficial to our mental health. According to research, those who feel connected to others have lower levels of anxiety and despair. Making meaningful relationships in your life might boost your sense of happiness and self-worth.
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point in the cell cycle where the cell verifies that it is ready to go to the next phase____
The sister chromatids are pulled back and forth by the kinetochore microtubules during metaphase until they align along the equatorial plane, which is the center of the cell. The metaphase checkpoint, a crucial checkpoint in the middle of mitosis, is when the cell makes sure it is prepared to divide.
Checkpoint G1
The G1 checkpoint ascertains if all circumstances are ideal for cell division to continue. At the G1 checkpoint, also known as the restriction point (in yeast), the cell commits irrevocably to the process of cell.
Checkpoint G2
If specific requirements are not met, the G2 checkpoint prevents entry into the mitotic phase. Protein stores and cell size are evaluated, same like at the G1 checkpoint.
M Checkpoint
Near the conclusion of the metaphase phase of mitosis, the M checkpoint takes place. Because it checks to see if all of the sister chromatids are appropriately connected to the spindle microtubules, the M checkpoint is also known as the spindle checkpoint.
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What is an organism answer?
Answer: An organism is basically a living thing that reacts to stimuli, grow, adapt, reproduce, and maintain homeostasis. These include eukaryotes and prokaryotes
Explanation:
What does the term VLCUFA stand for and how is it different than a VLCSFA
Answer:
vlcufa stand forvery long chain fatty acid
Explanation:
vlcsfa stand fir very long chain saturated fatty acid
it is the difference ok the foolfirm is
What type of seed is mung bean?
Mung bean is a leguminous seed which is cultivated in Asia and belongs to a plant species of Fabaceae which is also called green gram.
What type of bean is a mung bean?Mung beans are small seeds, green beans that be into the legume family. They have been civilized since ancient times. Mung bean germinate seeds are quite tasty and boast a cheerful, meaty-like flavor. Mung Beans are nutritious and delicious.
The sprouts grown from Mung Beans are incredibly rich in protein. The mung bean is a major comestible legume seed in Asia and is also eaten in Southern Europe and in the Southern USA.
So we can conclude that Mung bean seeds range from green to brown (some tropical varieties are yellow),
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Are meiosis chromosomes haploid or diploid?
By means of meiosis, haploid gametes are created.
Just what is meiosis?A diploid (a cell with two sets of chromosomes) in a human is divided through a process called meiosis into a haploid (a cell with one pair of chromosomes) (one with a single set of chromosomes). Human sperm and eggs are formed as haploid cells during meiosis. The two haploid sets of chromosomes that are produced during fertilisation between a sperm and an egg are combined to form a complete diploid set, which is a new genome.
Prophase, Metaphase, Anaphase, and Telophase are only a few of the stages a cell experiences twice when it goes through both meiotic divisions. Upon reaching the end of meiosis I, the parent cell divides into two daughter cells.
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How many phenotypes are possible?
While Mendelian tendencies have a tendency to be encouraged via way of means of a unmarried gene, the large majority of human phenotypes are polygenic tendencies.codominance, there are viable phenotypes.
When each alleles at a gene locus are absolutely expressed withinside the phenotype, it's far called codominance, that's a heterozygous state. Both phenotypes are in part dominant in codominance.
Since every figure has 4 special mixtures of alleles withinside the gametes, there are 16 viable mixtures for this cross.There is more than a few phenotypes, however maximum of the offspring are comparable in colour to the parents. If n = the wide variety of gene pairs, then (2n + 1) will decide the full wide variety of classes of phenotypes.
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is human evolution over? if not, what directions might human evolution take in the future? what do you imagine will be the main selective forces future humans face? what are some potential cultural adaptations and some potential genetic adaptations. in what ways do you think human cultural evolution is influencing our genetic evolution, and vice versa?
Human evolution is an ongoing process, and it is not considered to be complete. While the pace of genetic changes in humans has slowed down compared to earlier periods, various factors can still drive evolutionary changes in our species.
In considering the potential directions of human evolution in the future, it's important to note that predicting specific changes is speculative.
Selective Forces:
Environmental pressures: As humans continue to inhabit diverse environments, selective pressures related to climate change, access to resources, and environmental conditions may influence the traits.Disease and pathogens: Ongoing interactions with diseases and pathogens can exert selective pressures, favoring genetic variants that provide resistance.Reproductive factors: Changes in fertility patterns, mate selection, and reproductive behaviors can influence genetic composition.Cultural Adaptations:
Advancements in healthcare: Improved healthcare access and technologies can shape human evolution by reducing selective pressures.Changes in diet and nutrition: Dietary shifts and the availability of different food sources can impact selective pressures.Behavioral changes: Cultural practices and behaviors, such as reduced physical activity levels.Genetic Adaptations:
Continued genetic diversification: The global population includes various genetic variations, and as populations interact and interbreed, new genetic combinations can emerge.Genetic responses to selective pressures: Ongoing exposure to diseases, environmental conditions, and social factors may lead to the emergence and spread of genetic variations that provide adaptive advantages.Human cultural evolution and genetic evolution are intricately linked and can influence each other. Cultural practices and innovations have allowed humans to adapt and thrive in diverse environments.
So, the future of human evolution is complex and influenced by multiple factors, making specific predictions challenging
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All of the following increase blood vessel permeability EXCEPT
EXCEPT for leukotrienes and histamine, all of the following increase blood vessel permeability.
Histamine and leukotrienes are chemical compounds that cause inflammation by stimulating it. Eicosanoids, like leukotrienes, are important in the pathogenesis of inflammation. They are produced in leucocytes using 5-lipoxygenase to convert arachidonic acid into them. Histamine is released by the body in response to an allergen, such as pollen or animal dander, which causes inflammation at the point of contact. This process is a crucial component of the immune response of the body.
It is a collection of negative responses delivered by the typical safe framework, such as hypersensitivities and autoimmunity. They are commonly referred to as an over-response of the resistant framework, and these responses can be harmful, awkward, or even lethal. Excessive touchiness responses necessitate a pre-sharpened host condition.
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Identify the parts labelled in the Figure below.
Waxy cuticle, spongy, mesophyll, stroma, and lower epidermis are the labelled parts in the picture.
This plant has a large number of chloroplasts in each of its green cells. The stroma, a semifluid material that fills each chloroplast and is a source of many of the proteins and photosynthesis-related enzymes, is essential to the process of photosynthesis. The photosynthetic dark reaction actually takes place in the stroma.
Normal stomatal behaviour is for them to open during daylight hours and close at night. By opening and closing the pores in the leaves, it serves the primary purpose of facilitating the exchange of gases. The leaves' water retention is reduced thanks to it.
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Write three questions you have about the role of DNA and Chromosomes.
Focus on the following areas as
you generate questions:
• The cause and effect relationship between the genetic code and gene
expression
• Mechanisms of gene regulation
• The role of DNA segments that do not code for proteins
Make sure your questions are scientific questions, meaning they could be tested by scientists.
DNA and the chromosomes are the information containers for the human body. In order to make the person who we are.
What is the example of a gene expression?It is Lac operon in which the lac stands for lactose.
The role of chromosome-Chromosomes allow the DNA molecules to be copied easily and accurately during the cell division. Chromosomes are present in the nuclei of the cells and they make sure that DNA can be copied out accurately.
Gene regulation- This is the process which is used to make sure that the process, timing and location with which the genes are expressed out are at the accurate level.
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the first exposure to an antigen is called the ______.
The immune response occurring on the first exposure to an antigen is called. A. Secondary response.
To destroy the viruses, fungi, or bacteria, the immune system creates antibodies that are specific for each antigen. The first time a person is exposed to a type of bacteria, fungus, or virus, the immune system makes antibodies to that specific organism. Innate immunity is the first immunological, non-specific mechanism for fighting against infections. This immune response is rapid, occurring minutes or hours after aggression and is mediated by numerous cells including phagocytes, mast cells, basophils and eosinophils, as well as the complement system. The first exposure to an antigen stimulates a primary response, and subsequent exposures stimulate a faster and strong secondary response.
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cystic fibrosis is a genetic disease that results from a defective cftr protein that alters ion flow through the cell membrane such that water does not cross the cell membrane. gene therapy is being used to attempt to help cystic fibrosis patients. which step is unnecessary to develop a gene therapy treatment for cystic fibrosis?
The step that is unnecessary to develop a gene therapy treatment for cystic fibrosis is a) make antibodies to the defective CFTR protein to enhance the patient's immune system.
Cystic Fibrosis (CF) is a life-threatening genetic disorder, primarily affecting the lungs and digestive system.
To develop a gene therapy treatment for this condition, researchers have identified the defective CFTR protein as the cause of the illness, and have focused on ways to replace or repair the defective gene.
However, creating antibodies to enhance the patient's immune system is an unnecessary step in this process. Hence, option a is correct.
Instead, the latest research has focused on using gene editing techniques to replace the defective CFTR protein with a functional version, or to repair it in-situ. This has shown promise in clinical trials and is a promising step towards a cure for CF.
Although a part of your question is missing, you might be referring to this question:
Cystic fibrosis is a genetic disease that results from a defective CFTR protein that alters ion flow through the cell membrane such that water does not cross the cell membrane. Gene therapy is being used to attempt to help cystic fibrosis patients. Which step is unnecessary to develop a gene therapy treatment for cystic fibrosis?
a) make antibodies to the defective CFTR protein to enhance the patient's immune system
b) make proteins to the defective CFTR protein to enhance the patient's immune system
c) none of the above
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