Answer:
B. Pioneer
Explanation:
The first species to arrive are fast-growing “weedy species,” such as lichens or small annual plants, which create the first layers of soil as they decompose.
Answer:
B. Pioneer
Explanation:
The pioneer group is the first species to arrive in ecological succession. Hence, option (B) is the correct answer.
a 45 year old man had coronary artery stents placed 2 days ago. today he is in severe distress
Bases on the initial condition of the patient it can be suspected that the cardiac arrest was caused due to: Acute coronary syndrome.
Cardiac arrest is the sudden loss of the functioning of heart, breathing as well as consciousness. It occurs dur to malfunctioning in the electrical system of the heart. The general symptoms that may indicate arrival or cardiac arrest are: Chest discomfort, Shortness of breath, Weakness, palpitations, etc.
Acute coronary syndrome is the the collection of various symptoms that may cause a reduced blood flow into the heart. Heart attack and unstable angina are the part of the acute coronary syndrome.
The given question is incomplete, the complete question is:
A 45-year-old man had coronary artery stents placed 2 days ago. Today, he is in severe distress and is reporting "crushing" chest discomfort. He is pale, diaphoretic, and cool to the touch. His radial pulse is very weak, blood pressure is 64/40 mm Hg, respiratory rate is 28 breaths/min, and oxygen saturation is 89% on room air. When applied, the cardiac monitor initially showed ventricular tachycardia, which then quickly changed to ventricular fibrillation. Based on this patient's initial presentation, which condition do you suspect led to the cardiac arrest?
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For selective breeding to be successful, a desired trait must:
Be heritable. Major crops are typically the product of specialists; amateurs and professionals can both breeding flowers, vegetables, and fruit trees.
Selective breeding, often known as artificial selection, is a method used by humans to selectively create specific phenotypic traits (characteristics) in animals and plants by deciding which male and female animals or plants will reproduce sexually and generate offspring together. While domesticated plants are recognised as variations, cultivars, or breeds, domesticated animals are known as breeds and are typically bred by a professional breeder. A crossbreed is created when two purebred animals of different breeds mate, while hybrids are the name given to crossbred plants.
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How do you explain allegory?
Allegory is a fictional story that uses symbolic imagery to convey a message that is not always clear from the text. Fable, parable, and apologue are all examples of kinds of allegory. Allegory may have significance on two or more levels that the reader may only comprehend through an interpretative process.
Allegories frequently use tangible things, people, and activities to represent abstract concepts or to explain circumstances and events. Allegory was used by early authors like Plato, Cicero, Apuleius, and Augustine, but it really took off in Middle Ages sustained storytelling.
A narrative story that delivers a challenging, abstract, or difficult message is an allegory. It does this by using narrative.
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slay, MC hat is the purpose of mitosis? How many cells are made in mitosis? How many chromosomes does each to dividresor obega lasis, cell have at the end of mitosis? 3. On the bottom of this page, Draw each of the stages of mitosis, labeling each stage and any important features that are visible (chromosomes, centrioles, spindle fibers, nuclear envelope/membrane, etc...) 4. Distinguish between diploid and haploid cells. 5. What is cancer and how is it related to the cell cycle 5. What is the difference between asexual and sexual reproduction? Give examples of each.
Answer:
The purpose of mitosis is to produce two genetically identical daughter cells from a single parent cell. During mitosis, the genetic material of the parent cell is equally divided into the two daughter cells. Each daughter cell receives a complete copy of the genetic material, which consists of a specific number of chromosomes. The number of chromosomes in a cell is determined by the organism it belongs to. For example, human cells have 46 chromosomes, while fruit fly cells have only 4 chromosomes.The products of photosynthesis are the a reactants of fermentation b products of cellular respiration c reactants of cellular respiration d products of glycolysis
The final electron acceptor in aerobic cellular respiration is oxygen. Therefore, glucose and oxygen are created during photosynthesis and used in cellular respiration.
B option is correct
How is photosynthesis carried out?
the process of growing food by utilising sunlight's energy (glucose). Of course, it is much more intricate than that simple statement suggests. Photosynthesis, a multi-step biological process that uses sunlight energy to create carbohydrates and release oxygen in the process, reduces carbon dioxide.
What product is a byproduct of photosynthesis?
During photosynthesis, oxygen and glucose are formed.
(This is fantastic news for creatures like humans and plants that use oxygen to complete cellular respiration.) Oxygen is expelled from the leaves through the stomata.
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What is the endoplasmic reticulum responsible for?
The endoplasmic reticulum (ER) is a dynamic organelle that regulates intracellular calcium stages and is answerable for many mobile features inclusive of protein and lipid synthesis.
The endoplasmic reticulum is the transport system of eukaryotic cells, but it also performs many other important functions such as protein folding. It includes two subsets: Rough endoplasmic reticulum and smooth endoplasmic reticulum.
The endoplasmic reticulum forms an interconnected network of flattened vesicles surrounded by membranes called cisterns and tubular structures in most eukaryotic cells. The ER membrane is connected to the outer nuclear membrane. Red blood cells and sperm do not contain endoplasmic reticulum. The endoplasmic reticulum performs several common functions, including folding protein molecules into vesicles called reservoirs and transporting the synthesized proteins to the Golgi apparatus in vesicles. The rough endoplasmic reticulum is also responsible for protein synthesis.
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all of the following are optimal treatment modalities in treating periodontal disease except: group of answer choices a) periodontal instrumentation to remove microbial etiology b) removing diseased cementum during root scaling c) periodontal surgery d) repairing overhanging margins on restorations
All of the above given choices are optimal treatment modalities in treating periodontal disease except repairing overhanging margins on restorations.
The correct answer choice is option d.
What is meant by periodontal disease?Periodontal diseases simply refers to those diseases which affect the bones and gums of the teeth and occur as a result of inflammation of these regions. When this health condition arises, one of the surest ways to deal with it is by having periodontal surgery. This condition affect the physiologist functioning of the teeth system severely.
In conclusion, it can be deduced from the explanation given above that periodontal diseases can be treated.
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Biography about thomas alva edison
2 Paragraph
• Birth/Death dates
• Family
• Education
• Professional History
• Inventions
• Impact of inventions
One of the most well-known and successful American businessmen and inventors was Thomas Alva Edison.
He was born on February 11th, 1847, and died on October 18th, 1931. He spent 84 years on this earth. Samuel Edison and Nancy Elliott were his parents. Thomas Edison had six siblings: three sisters, three brothers. Of all, Thomas was the youngest. As a young child, Edison had little formal education. His mother gave him instruction in reading, writing, and math. He never attended high school or college.
When he was 13 years old, he sold newspapers. At the age of 19, he worked for Western Union. He created the phonograph, motion picture camera, light bulb, alkaline storage battery, automated telegraph, and carbon telephone transmitter. The lives of people were significantly impacted by Edison's innovations. Indoor illumination was revolutionized by the light bulb. The phonograph facilitated simpler communication. It reunited faraway individuals.
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Enzymes speed up the rate of reactions in living cells by
Answer:
reducing the activation engery
In which two ways do plant cells use the sugar made in photosynthesis?
A.
To store energy for life processes
B.
To make more complex sugar molecules
C.
To produce carbon dioxide
D.
To produce hydrogen ions
Answer:
the two ways in which plants use sugar made during photosynthesis are A and B.
Explanation:
A. plants need further energy to carry out their major functions like - respiration and transpiration for which they need sugar obtained during photosynthesis .
B. plants need starch and cellulose as a food which are also sugar products.
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The two ways in which plant cells use sugar made in photosynthesis are to store energy for life processes and to make complex sugar molecules. The correct options are A and B.
Plant cells utilize the sugars produced in photosynthesis in various ways.
They store some of the sugar as energy reserves for life processes. This storage is often in the form of starch or other complex carbohydrates, which can be broken down later to release energy as needed.
The sugars are also used to synthesize more complex molecules. These include polysaccharides like cellulose, which form the structural components of the cell wall, as well as other carbohydrates such as sucrose, which are used for transport and energy storage within the plant.
During photosynthesis, plants use carbon dioxide from the environment along with sunlight and water to produce sugars.
Hydrogen ions are involved in certain cellular processes, such as ATP synthesis during cellular respiration, but their production is not directly linked to the utilization of sugars.
Thus, the correct options are A and B.
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Drag each tile to the correct box.
Arrange the steps in the order they in occur during the development of neurons.
A) Signaling Factors cause precursor neurons to produce neurons.
B) Stem cells arise from the inner mass of cells.
C)Genes that lead to the production of undifferentiated precursor neurons are activated.
D) Signaling factors trigger differentiation in stem cells.
Answer:
Stem cells arise from the inner mass of cells.Explanation:
The steps in the development of neurons must occur in a specific order for the process to be successful. In the first step, stem cells arise from the inner mass of cells. These stem cells are unspecialized cells that have the potential to develop into a wide range of different cell types.
Next, genes that lead to the production of undifferentiated precursor neurons are activated. These genes provide the instructions for the stem cells to begin developing into neurons.
Once the precursor neurons have been produced, signaling factors trigger their differentiation. This means that the precursor neurons become specialized and begin to develop into specific types of neurons.
Finally, signaling factors cause the precursor neurons to produce neurons, completing the development process. This is a critical step because it ensures that the neurons are able to function properly and play their role in the nervous system.
What is the correct order of the steps of the Calvin cycle?
Answer: Carbon Fixation, Reduction and regeneration
What are the 3 main types of contamination?
The three major types of contamination are physical contamination, chemical contamination, and biological contamination.
Contamination is the presence of refuse such as dust as well as particles during in the production and transportation processes. Any unwanted matter found inside the product is referred to as a contaminant. These contaminants have an impact on the product's or process's quality. Cross contamination occurs when unwanted matter has been introduced or transferred from one manufacturing process to the next.
Physical contamination would occur if a leak in the retaining containment contaminated the product inside.
An example of chemical contamination is when a product would be stored in a container which it previously held some other product but was not cleaned properly. The remaining product's chemical composition may introduce impurities into the new product, contaminating it.
Bacteria may thrive in biological contamination if the container also isn't properly cleaned and dried. The contaminated container then will affect the product, potentially introducing microbes into the batch.
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What structure produces a thick secretion that can become gritty overnight, producing what is commonly called "sleep in the eyes"?
a. lacrimal apparatus
b. lacrimal caruncle
c. medial canthus
d. conjunctiva
The lacrimal caruncle structure produces a thick secretion that can become gritty overnight, resulting in what is commonly referred to as sleep in the eyes.
Eye discharge, or "sleep" in your eyes, is indeed a combination of mucus, oil, skin cells, and other debris that accumulates inside the corner of your eye while you sleep. Depending on how much of the liquid with in discharge has evaporated, it can be moist and sticky or dry and crusty. Eye mattering, ocular boogers, eye gunk, eye pus, and goopy eyes are other slang terms for eye discharge. Eye discharge, also known as "rheum," serves a protective function by removing waste products but also possibly hazardous debris from tear film and the anterior surface of your eyes.
The lacrimal caruncle is a small, pink, globular spot at the inner corner of the eye, also known as the medial canthus. It has both oil glands and sweat glands. The whitish material which sometimes accumulates in that region is from these glands. The tarsal plate is made up of connective tissue that supports the eyelids.
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What is the human genome made up of?
Most genomes, including the human genome and those of all other cellular life forms, are made of DNA (deoxyribonucleic acid) but a few viruses have RNA (ribonucleic acid) genomes. DNA and RNA are polymeric molecules made up of chains of monomeric subunits called nucleotides.
A polymer made of two polynucleotide chains that coil around one another to create a double helix is called deoxyribonucleic acid.
All known organisms and many viruses have genetic information in the polymer that is necessary for their development, operation, growth, and reproduction.
Nucleic acids include DNA and ribonucleic acid (RNA). Nucleic acids are one of the four main categories of macromolecules that are necessary for all known forms of life, along with proteins, lipids, and complex carbohydrates (polysaccharides).
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Label each one for brainiest
Answer:
this is a image of lung
Explanation:
Huda is so tired and feels like she is going to fall asleep any second. What type of brain wave is MOST likely predominant in this scenario?
A.
delta
B.
beta
C.
alpha
D.
theta
Theta (4-8 Hz) type of brain wave is MOST likely predominant in this scenario of Huda is so tired and feels like she is going to fall asleep any second.
What are brain waves?The oscillating electrical voltage in the brain which are just a few millionths of a volt is termed as Brain Waves.
They are of 4 major types that are as follows:
Gamma (greater than 30Hz) BETA (13-30Hz) ALPHA (8-12 Hz)THETA (4-8 Hz) and DELTA(> 4 Hz).Now, Our Brain Uses 13Hz (i.e. high alpha or low beta) that is for active intelligence in our mind.
Gamma brain waves are the fastest brain waves produced inside our brain they are used in problem solving.Theta brain waves are used in slow activities such as Sleeping, daydreaming, intuition, etc.
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What are the 10 different methods used to control hazards and risk?
The various methods to control hazards and risks are using standard tools and equipment, working in the presence of expert and working in authorized labor conditions.
Hazards are the unintentional accidents which may cause loss of life and property. Risks are the abrupt conditions which occur and has the potential to cause damage.
The ten different ways to control hazards and risks are:
Always using hard hats, helmets or gloves while working.Using proper ventilation, well illuminated lights while working.Using tools and equipment in areas where manual work is risky.Always working under the expert contractor.Using standard quality products.Avoid machinery which is under repair. Using safety measures while site is under construction by using sign boards and flash light.Pasting emergency contacts for quick use.Assigning a doctor and ambulance at work site to ensure quick redressal.Avoid working in isolation or areas of explosive danger.Learn more about hazards at:
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What is the genotype of the purple and white flower in the P generation?
One purple allele (P) and one white allele are present in all F1 plants (p). The alleles for each gene in the plant make up the genotype. Here, Pp is the genotype. A plant is homozygous if it has two copies of the same allele.
Since the monohybrid cross only involves one feature, the blossom color, it is examined. For the F1 generation, there were gametes P and p. As a result, all of the genotypes are present in the progeny during the F1 generation: Pp or heterozygous purple flowers, which are all purple flowers (phenotype similar). The dominant trait color, purple, has repressed the white color trait.
1:1 phenotypic ratio
1:1 Genotypic Ratio
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What processes are made possible by the cell membrane?
Diffusion, pinocytosis, carrier-mediated transport, and transcellular transport are the mechanisms that control the movement of molecules across membranes.
What is diffusion ?Diffusion is the overall net movement of anything from a higher concentration to a lower concentration. A gradient in the Gibbs free energy or chemical potential drives diffusion.
The process by which cells take in molecules by engulfing them is known as endocytosis. The substance to be carried is caught in a little invagination that the plasma membrane forms that extends inward.
The terms "concentration gradient," "pressure gradient," and "temperature gradient" are used to describe changes in concentration, pressure, and temperature over a given distance. The Latin term diffundere, which meaning "to spread out," is the root of the English word diffusion.
Thus, Diffusion, pinocytosis, carrier-mediated transport, and transcellular transport are the mechanisms that control the movement of molecules across membranes.
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Is greater than minimal risk research allowed to include pregnant women?
The study must be sufficiently advanced to have some level of safety data in order for it to be considered for research that carries more than minimum risk but has the potential to directly benefit the participants who are pregnant or the fetus.
Can studies that include pregnant people be exempted?The Federal Research Regulations, Subpart B has these particular safeguards. In addition to meeting the standard requirements for approval, the IRB may only authorize research involving pregnant people or fetuses if all conditions for the study (described below) are satisfied.The study must be sufficiently advanced to have some level of safety data in order for it to be considered for research that carries more than minimum risk but has the potential to directly benefit the participants who are pregnant or the fetus.The study must be sufficiently advanced to have some level of safety data in order for it to be considered for research that carries more than minimum risk but has the potential to directly benefit the participants who are pregnant or the fetus.To learn more about Subpart B refer to:
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What does Napoleon blaming Snowball represent?
Napoleon blaming Snowball represents the use of fear and propaganda to control the population.
What is population?Population is the total number of people, animals or other organisms residing in a particular geographic area. It is usually expressed as a quantity per unit area or unit volume. Population density, which is the number of individuals per unit area, is a key factor in determining the size and health of a particular ecosystem. Population dynamics are an important factor in the development of society, as they influence the availability of resources and services, as well as the level of pollution.
By making Snowball seem like an enemy of the people, Napoleon is able to manipulate the animals into believing his own version of the truth and following his leadership. This is a common tactic used by authoritarian regimes to maintain control.
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How are chromosomes passed down to offspring in sexually reproducing organisms?(1 point).
The male and female reproductive cells used in sexual reproduction are referred to as gametes, or just sperm and eggs. The number of chromosomes in each gamete is half that of the organism's other cells. Genetic material is combined when an egg and a sperm come together, a process known as fertilization.
Animals that reproduce sexually have gametes that contain half as many chromosomes as the parents. As a result, when male and female gametes combine during fertilization, the resulting progeny will have the same quantity of DNA or chromosomes as their parents.
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PLEASE RESPOND QUICKLY
Answer:
It could be any of the following except thymine.
Mitosis occurs in somatic cells. When a liver cell divides to create new liver cells it will create _.
Answer:
identical daughter cells
Explanation:
Mitosis occurs in somatic cells. When a liver cell divides to create new liver cells it will create identical daughter cells.
which one of the following is true of trnas? a trnas carry special sequences known as codons. b all of the above. c each trna binds a particular codon. d none of the above. e there are four types of trna. f trnas are double-stranded.
All of the following statements are true about tRNA:
a) tRNA carries special sequences known as codons.
b) Each tRNA binds a particular codon.
c) There are four types of tRNA.
What is a tRNA?tRNA, or transfer RNA, is a small RNA molecule that plays a crucial role in the process of protein synthesis in cells. Protein synthesis occurs in the ribosomes, which are the site of translation in cells. During translation, the information stored in the DNA code is used to synthesize proteins.
tRNA plays a key role in this process by acting as a bridge between the information stored in the DNA code and the sequence of amino acids that make up a protein. Each tRNA molecule carries a specific amino acid and is able to "read" a particular sequence of nucleotides, known as a codon, in the RNA molecule produced during transcription. The tRNA molecule brings the corresponding amino acid to the ribosome, where it is added to the growing protein chain.
In this way, tRNA helps to translate the genetic code stored in DNA into the sequence of amino acids that make up proteins. This process is essential for the proper functioning of cells and is vital for the proper development and function of organisms.
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root systems are classified as fibrous root systems and taproot systems. which property distinguishes the two types of root systems from each other?
Taproot system :-
Dicots frequently have a taproot system, in which the roots grow from the radicle (embryonic root). With secondary, tertiary, and additional lateral branches becoming visible, these develop into the plant's main root.Deep-rooted, underground, and persistent roots are just a few of the characteristics of taproot. The single, lengthy primary root of a taproot is where secondary, tertiary, and rootlets are evident.Plants with tap roots may be able to endure drought conditions and aid in securing the roots of other plants in the soil.Carrots, radishes, beets, and other plants are examples of those with tap roots.Fibrous root system :-
No such primary root exists; rather, all roots share certain characteristics. Monocot plants contain fibrous root system. Instead of growing from the radicle, fibrous or adventitious roots can be seen in plants.Shallow, short-lived roots with a choice of aerial or subsurface growth are found in fibrous or adventitious roots.Although fibrous root or adventitious root systems are quick to absorb surface and irrigation water, they cannot thrive in drought and will quickly dry out.Grass, wheat, coconut palms, and onions are a few examples of plants with fibrous roots or systems.know more about monocots and dicots here
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What is the process of protein synthesis step by step?
Protein synthesis is a complex and essential process in the human body, responsible for creating proteins which are essential for the growth, repair and maintenance of cells.
The process involves several steps, beginning with the transcription of DNA, followed by translation of the messenger RNA (mRNA) into a polypeptide chain, before finally being modified into a functional protein. Here we will take a look at each step in the process of protein synthesis.
1. Transcription: mRNA is created from DNA in the nucleus of the cell.
2. mRNA Migration: The mRNA leaves the nucleus and travels to a ribosome in the cytoplasm of the cell.
3. tRNA Anticodon Recognition: Transfer RNA (tRNA) molecules attach to the mRNA at the ribosome. Each tRNA carries an amino acid that corresponds to the mRNA codon.
4. Peptide Bond Formation: The ribosome links the amino acids together to form a peptide chain.
5. Protein Elongation: tRNA molecules continue to bring amino acids to the ribosome and the peptide chain grows until the ribosome encounters a stop codon on the mRNA.
6. Protein Release: The ribosome releases the completed protein.
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why moderate fever is nessesary for health
Answer:
yes moderate fever is necessary
Explanation:
You get a fever because your body is trying to kill the virus or bacteria that caused the infection. Most of those bacteria and viruses do well when your body is at your normal temperature. But if you have a fever, it is harder for them to survive. Fever also activates your body's immune system.
Where do volcanoes from?
Answer:
Volcanoes form when molten rock, or magma, rises from deep within the Earth's mantle and erupts onto the surface.
Explanation: