Living things are highly organized and structured, following a hierarchy that can be examined on a scale from small to large. The atom is the smallest and most fundamental unit of matter. It consists of a nucleus surrounded by electrons. Atoms form molecules which are chemical structures consisting of at least two atoms held together by one or more chemical bonds. Many molecules that are biologically important are macromolecules, large molecules that are typically formed by polymerization.
In larger organisms, cells combine to make tissues, which are groups of similar cells carrying out similar or related functions. Organs are collections of tissues grouped together performing a common function. Organs are present not only in animals but also in plants. An organ system is a higher level of organization that consists of functionally related organs. Mammals have many organ systems. For instance, the circulatory system transports blood through the body and to and from the lungs; it includes organs such as the heart and blood vessels. Furthermore, organisms are individual living entities. For example, each tree in a forest is an organism. Single-celled prokaryotes and single-celled eukaryotes are also considered organisms and are typically referred to as microorganisms.
All the individuals of a species living within a specific area are collectively called a population. For example, a forest may include many pine trees. All of these pine trees represent the population of pine trees in this forest. Different populations may live in the same specific area. For example, the forest with pine trees includes populations of flowering plants and also insects and microbial populations. A community is the sum of populations inhabiting a particular area. For instance, all of the trees, flowers, insects, and other populations in a forest form the forest’s community. The forest itself is an ecosystem. An ecosystem consists of all the living things in a particular area together with the abiotic, non-living parts of that environment such as nitrogen in the soil or rainwater. At the highest level of organization, the biosphere is the collection of all ecosystems, and it represents the zones of life on earth. It includes land, water, and even the atmosphere to a certain extent. Taken together, all of these levels comprise the biological levels of the organization, which range from organelles to the biosphere.
How do the chemicals released from the endocrine system make it to the various parts of the body? Why do all of these chemicals not cause every tissue to function as they pass them on their journey through the body?
Explanation:
chemicals released from the endocrine system are secreted directly into the bloodstream and are carried to where their required.
these chemicals are proteins hence have a specific shape that acts only on specific tissues.
What happens when the cell of a unicellular organism dies?
A unicellular organism is an organism that consists of a single cell. When the cell dies, the organism dies.
A particular laboratory solution contains 5 µL of propanol per 10 mL solution.Express this as a percent propanol solution.
5 microlitre= 0.005 millilitre
0.005 mL of propanol present in 10 mL solution.
In 1 mL solution 0.005÷10= 0.0005 mL propanol solution present
In 100 mL solution 0.0005×100= 0.05 % propanol solution
What is percentage solution?
A volume or amount of chemical or compound per 100 mL of a solution is referred to as a percentage solution. Relative solute to solvent expression: X amount/100 ml = X%
Solution concentrations can be easily and conveniently recorded using percentage solutions. The fact that the molecular weight of a substance is not taken into account when determining the percentage of the necessary solution is a benefit of percentage solutions.
Two varieties of percentage solutions are frequently applied in histology:
Percentage weight by volume (w/v)
Percentage volume by volume (v/v)
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Molecules move UP a concentration gradient. What is this called
in a DNA molecule having 1400 bases has 400 adenine bases .so what will be the number of thyamine bases?
Answer:
Thymine (T) is one of the four nucleotide bases in DNA, with the other three being adenine (A), cytosine (C) and guanine (G). Within a double-stranded DNA molecule, thymine bases on one strand pair with adenine bases on the opposite strand. The sequence of the four nucleotide bases encodes DNA's information.
Which of these is NOT part of cell theory? A:A. All cells come only from existing cells. B:B. All cells have the same basic structure. C:C. All living things are made of one or more cells. D:D. The structure and function of an organism is determined by the structure and function of its cell(s).
B.All cells have the same basic structure
Different types of cells wherever we see them have their own unique structure. Cells with different function generally have different shapes that suit them for their particular function
A teen who eats large amounts of food in a single sitting and then induces vomiting to eliminate the food might be suffering from __________.
Question 1 options:
anorexia
bulimia
synesthesia
diffusion
The answer is Bulimia,otherwise referred to as Bulimia Nervosa
Notes: Is often confused with anorexia, bulimia is characterized by binge eating and then purging of foods whereas someone with anorexia has no appeal to food (or little appeal) and would avoid eating altogether.
Hope this helps, Have a great day!
~Jet
Which of the following does the scope of a project refer to? (1 point)
O the size of the research project
O the way the project is organized
O an effective source for the project
O the answer to your research question
Answer: The size of the research project
Explanation:
The project scope is the total amount of work that needs to be done to complete a project.
Project scope entails documenting project goals, deliverables, tasks, costs, and timeframes. Therefore, option (A) size of the research project is correct.
What is project scope?The phase of project planning known as "project scope" requires the creation of a detailed list of the endeavor's particular objectives, deliverables, tasks, and timetables before it can be considered complete.
What the project is about, what is included in it, and what is not included in it are some of the things that are outlined in a project scope. Key stakeholders, procedures, assumptions, and restrictions are also outlined in a project scope. A scope statement is where all of these vital pieces of information are documented for reference.
Therefore, option (A) is correct.
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In which approach to problem solving do you compare something you’re familiar with to something that’s unfamiliar in an attempt to understand the unfamiliar problem?
Question 12 options:
Using algorithms.
Using heuristics.
Using an analogy.
Using memory.
The approach to problem-solving compared something you’re familiar with to something that’s unfamiliar is using memory. The correct option is d.
What is problem-solving?Problem-solving, which is a common component of most activities, is the process of reaching a goal by overcoming barriers. Simple daily duties to complicated concerns in the business and technical domains are all examples of concerns that need to be solved.
An unfamiliar problem is first subjected to the familiar problem and then, by using memory, we can create the solution to the problem.
Therefore, the correct option is d. Using memory.
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Answer:
Using an analogy.
Explanation:
he copied DNA that directs the production of a protein is called:DNA.RNA.a gene.ribose.
The correct answer is RNA.
Transcription is the process by which DNA is copied to RNA, which ultimately directs protein synthesis.
DNA- contains the genetic information responsible for the development and function of an organism.
Gene- refers to the basic unit of heredity passed from parent to child.
Ribose- refers to the five-carbon sugar found in an RNA molecule.
Wildflowers are plants that grow on the forest floor. During a study, a scientist observed that wildflowers began to bloom before the leaves appeared on the tall trees above them and stopped blooming once the trees were full of broad leaves which blocked the sunlight.
Evaluate this observation and explain a limiting factor this is affecting the wildflowers on the forest floor.
The leaves on the tree are blocking sunlight from reaching the flowers. This is stopping the flowers from getting what they need for photosynthesis, and they are not blooming because that requires photosynthesis.
Answer:
sunlight
Explanation:
Plants need sunlight as an essential nutrient like nutrients from the soil and water that are needed to photosynthesize. when they are at the ground the leaves at the top cover the sunlight which limit the growth of the plants because they are not able to photosynthesize to their full potential
Which of the following is considered a gender stereotype?
Question 7 options:
Men have more facial hair than women.
Women stay home and take care of the children.
Men are typically taller than women.
Women can become pregnant and give birth to children.
Answer:
Women stay home and take care of the children
40. What genotypes are produced by a program of inbreeding?A. only dominantB. only heterozygousC. only homozygous
Remember that inbreeding is a process of production of offspring in which genetically closely related organisms are mated. This leads to homozygosity. In humans, inbreeding by causing homozygosity is intrinsically related to congenital anomalies and recessive genetic pathologies.
We can conclude that the correct answer is:
Answer:C. only homozygous
describe the steps in the water cycle. then, describe what latent heat is. at what steps in the water cycle is latent heat absorbed? in which steps is latent heat released? helpp
A scientist wants to investigate how the availability of
water affects the growth of trees.
Which investigation could the scientist use to gather evidence
relating to this topic?
OA. A comparative investigation in which the scientist
compares the root structures of two different types of
trees to see how they absorb water differently
B. A descriptive investigation in which the scientist closely
studies and describes the process by which trees take
in water
c. An experimental investigation in which the scientist
gives a tree a different amount of water each day and
records its growth over time
D. An experimental investigation in which the scientist
gives several trees of the same species varying
amounts of water over a period of time and measures
how quickly the trees grow
SUBMIT
Answer:
D
Explanation:
Comment
C is the second best answer, but it is not compared to anything, so you don't know if the tree is acting well in the environment, or not so good at all.
D is the best answer. Take a bunch of trees. Treat them the same way and see what the range is. If it's narrow, then the scientist has not learned that much except that the trees tend to act the same way under the same conditions. If there is a lot of variation, then he or she has to devise another experiment to find out why.
1. What is the ozone layer? Why is it important?
2. What causes ozone to form naturally in the upper atmosphere? Lower atmosphere?
3. Explain why scientists say the earth has too little AND too much ozone.
4. What chemicals are destroying the ozone layer? Where is this destruction most visible?
5. What is causing the temperature of the earth to increase? What is this called?
6. Name the greenhouse gases.
7. What are some ways humans have contributed to the greenhouse effect?
A portion of the sun's radiation is absorbed by the ozone layer in the stratosphere, preventing it from reaching the planet's surface.
What is the ozone layer?The majority of the UV light from the Sun is absorbed by the Earth's stratosphere's ozone layer, also known as the ozone shield. In comparison to other areas of the atmosphere, it has a high concentration of ozone (O3), yet it is still relatively low in comparison to other gases in the stratosphere.The stratosphere, a region of the atmosphere between 10 and 40 kilometers above us, is where the majority of ozone is found. Here, it serves as a shield to insulate the Earth's surface from the sun's harmful UV rays. Weakness in this barrier would make us more prone to immune system problems, cataracts, and skin cancer.Ozone depletion is the steady lowering of the Earth's ozone layer in the high atmosphere as a result of human activity and the discharge of chemicals including gaseous chlorine or bromine. Particularly over Antarctica, the thinning is particularly noticeable in the polar areas.To learn more about : Ozone layer
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A recessive allele is:
O The set of DNA instructions that determines the offspring's traits.
O The trait that is observed when it is present; represented by capital letters.
O The passing of traits from parent to offspring.
O The trait that is observed only when 2 alleles are present; represented by lower case letters.
A recessive allele is the trait that is observed only when 2 alleles are present; represented by lower case letters.
Recessive Allele- When there is only one copy of an allele, it has no effect at all. This is in contrast to a dominant characteristic, which can only be expressed when one of two alleles is present.
Trait- A character is an attribute that helps identify the organism, whereas a trait can defined as a condition of character, that is a distinctive variant of a phenotypic feature of an organism. For instance, you could inherit the trait of green eyes from your parents if they both have them.
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What is your hypothesis?
As the incline angle increases, the force also increases which is inversely proportional to the time . Therefore, the time a toy car takes to travel down a ramp is less.
What is angle of incline?On a graph, the distance between two lines is represented by an angle called the angle of inclination. As the angle increases, the parallel component of force increases and the perpendicular component of force decreases. The acceleration is brought about by the parallel component of the weight vector. Therefore, accelerations are greater at steeper angles.
Because the steeper the incline, the greater the Gravitational Potential Energy (GPE), and the greater the GPE, the more kinetic energy is converted and the faster the car will travel.
Thus, as the slope of the ramp increases, so will the velocity and the time decreases.
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1) Use the following word bank to
fill in the blanks on the flow chart:
Zygote
Mitosis
Egg
Fertilization
Sperm
Meiosis
Embryo
organism
Mother
Egg
Will give 200 points if help
Answer:
1.50
2.0
3.36-24
4.2
5.approximately about like 2,344
6.99
Answer: The answer is ⠀ ⠀ ⠀, hope this helps! :))
Explanation:
CH4 + 202→ CO₂ + 2H₂O
In the chemical reaction, if 10 moles of H₂O are produced,
moles of CO₂ are also produced.
5 moles of CO2 produced
What is moles ?
The Avogadro constant's numerical value is fixed to be exactly 6.022 141 29 1023 when it is expressed in the SI unit mol-1, which determines the mole's magnitude. The mole, symbolised by the letter mol, is the SI unit of substance that represents the amount of a specified elementary entity, which may be an atom, molecule, ion, electron, or any other particle or a specified group of such particles.
2moles of H2O is produced when 1 mol of CO2 is produced
10 moles of H2O is produced when 10/2mol of CO2 is produced
= 5 moles of CO2 produced
5 moles of CO2 produced
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What are the four bases of the genetic code?
Answer:
There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
Adenine (A) and Thymine (T) always pair togetherCytosine (C) and Guanine (G) always pair togetherExplanation:
Hope it helps! =D
PEASE HELP PLEASE!? List and describe the substrates and products of TCA cycle
Acetyl CoA and oxaloacetate are the substrates of TCA cycle and GTP, 3NADH, FADH2, 2[tex]CO_{2}[/tex] are the 7 products that are yielded during the TCA cycle.
Explain the TCA cycle.The second stage present of cellular respiration is a three-step process through which living cells break down organic fuel molecules while in the presence of oxygen to obtain the entire energy that they require to grow and divide, is known as the tricarboxylic acid cycle, also known as the Krebs cycle or the citric acid cycle.
What phases make up the TCA cycle?The TCA Cycle in Steps can be stated as
Oxaloacetate, a four-carbon chemical, and acetyl Co-A mix, releasing the CoA group to form the six-carbon molecule known as citrate.
Citrate is transformed into its isomer, isocitrate, in the subsequent step.
Isocitrate is oxidized in the third phase.
The creation of citric acid, which has three (COOH) carboxylic groups, triggers the Krebs cycle processes.
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Which of the following describes a similarity between aquafarming and hydroponic farming?
A. They both require existence of fish.
B. They both require adding nutrient-rich water.
C. Neither requires soil.
D. They both require mutualism.
Pretty sure the answer is B. Someone tell me if i'm wrong.
Answer: B
Explanation: You Need nutrient-rich water Or The Plant Is Gonna Die
Hope I Helped!
Discuss the correlation between Mendel’s factors?
Each character has two factors, one inherited from each parent; how the character is shown is the result of interaction between this two factors. Hereditary factors are segregated in the formation of gametes (eggs and sperm).
Mendel conluded that different traits are inherited independently of each other, this means there is no relationship between them, therefore the inheritance pattern of one trait will not affect the inheritance pattern of another.
This treatment can increase the risk _________________________ cancer.
Answer: of
Explanation: IT MAKES SENSE!!!!
Please write 5 sentences to this
Similarities between cells and viruses includes:
Both cells and viruses have nucleic acid genomes based on the same genetic code that's used in cells.Both cells and viruses has genetic variation and can evolve.The differences between cells and viruses are:
Cells can exist by themselves while viruses need a living host in order to reproduce.Cells are the basic units of life, Viruses are non-living infectious particles.The 4 parts of a virus are:
Nucleoid Capsid EnvelopeEnzymes.What is a virus?A virus can be described as a submicroscopic infectious agent that replicates only inside the living cells of an organism.
The virus consists of a single molecule of nucleic acid surrounded by a protein coat called the capsid.
In conclusion, viruses shares some differences and similarities between cells.
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The figure above will be required for the next two questionsIn figure B, red blood cells are in what type of solution?Hypotonic, which means the solution (plasma) has higher solute concentrationHypertonic, which means the solution (plasma) has higher solute concentrationHypotonic, which means the solution (plasma) has lower solute concentrationHypertonic, which means the solution (plasma) has lower solute concentration
• Hypertonic - Greater solute concentration
,• Hypotonic - Lower solute concentration
,• Isotonic - Same solute concentration
Given that by osmosis water will go to where the concentration is higher, in an attempt to make the concentrations the same, and in figure B the cells have lost water, this means the plasma has a higher concentration of solute, which means is hypertonic. This means the answer is B.
Drag into the correct order, starting with deoxygenated blood entering the right atrium (1 = first) This deoxygenated blood is pumped out of the heart and towards the lungs by the right ventricle 1 At the lungs the deoxygenated blood exchanges carbon dioxide for oxygen, becoming Oxygenated Oxigenated blood returns to the left atrum of the heart Deoxygenated blood from the body enters the right otrum of the heart The blood becomes deoxygenated and returns to the heart The oxygenated blood gives its oxygen to body cells in exchange for carbon dioxide
To answer this we must remember quickly how the blood flows in the heart. Blood enters through the superior vena cava to the right atrium then through the tricuspid valve passes to the right ventricle, the blood flows then to the pulmonary valve and the pulmonary artery directly to the lungs where is oxygenated, later returns through the pulmonary vein and mitral valve, to the left ventricle where is directed through the aortic valve into the aorta and into the rest of the body. Therefore the order is as follows:
1.- Deoxygenated blood from the body enters the right atrium of the heart
2.-This deoxygenated blood is pumped out of the heart and towards the lungs by the right ventricle
3.- In the lungs the deoxygenated blood exchanges carbon dioxide for oxygen, becoming Oxygenated
4.- Oxygenated blood returns to the left atrium of the heart
5.-The oxygenated blood gives its oxygen to body cells in exchange for carbon dioxide
6.- The blood becomes deoxygenated and returns to the heart
Note: there is a step missing after point 4 as blood goes to the left ventricle before leaving the heart.