BIOLOGY HIGH SCHOOL

List two abiotic factors that affect life in the Arctic

Answers

Answer 1
Answer: Abiotic factors in the arctic tundrainclude frozen soil not far below the surface that is of poor quality.Strong winds are common, and there is very little rainfall, though thereis usually enough moisture to grow some short plants
Answer 2
Answer: living and nonliving factors

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When you are exposed to sunlight for a long time, your skin, which otherwise appears normal, gets heavily tanned. What could be the reason? A. The genes for melanin pigmentation remain turned on and prepare more melanin than usual to protect the skin from photo-damage when it is exposed to sunlight for long time. B. The genes for melanin pigmentation remain turned off and synthesize more melanin than usual to protect the skin from photo-damage when it exposed to sunlight for a long time. C. The genes for melanin pigmentation are switched off to stop the synthesis of melanin.
Difference between aerobic metabolism and anaerobic metabolism
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What is 1.0079 rounded to the nearest whole

Answers

Answer:

1

Explanation:

1.0079

The place value we must round to in order to get a whole number for this number is the one's place value, which the number 1 is occupying.

Now, we look at the previous place value to determine whether we round up or not. If it is 5 or greater, we round up and if not, the number stays the same. Because the previous place value is a 0 and 0 is less than 5, the 1 just stays the same.

1

I hope this helps!

Answer:

1

Explanation:

Rounded to the nearest whole means a number with no decimal

Since it is .0 we do not need to round and the answer is just 1

One theory of early life on Earth states that the first life forms did not use oxygen for respiration and were unable to make their own food. Based on this theory, which types of organisms were most likely present?aerobic, autotrophic bacteria


aerobic, heterotrophic bacteria


anaerobic, autotrophic bacteria


anaerobic, heterotrophic bacteria

Answers

Answer:

Early organisms would have to be anaerobic, as air was likely non existent. This rules out the first two options.

Autotrophic can be called producers, and heterotrophic can be called consumers.

The question states that "did not use oxygen for respiration and were unable to make their own food"

Only one option satisfies the question:

anaerobic, heterotrophic bacteria

Answer:

Anaerobic, heterotrophic bacteria

Explanation:

i got it right on k12

Why do hydrogen bonds form between water molecules?

Answers

Answer:

In water molecules the oxygen atom attracts the negatively charged electrons more strongly than the hydrogen. This gives water an asymmetrical distribution of charge so that it is a polar molecule. ... Because the water molecules are small, many of them can surround one molecule of the solute and form hydrogen bonds.

Explanation:

Final answer:

Hydrogen bonds form between water molecules due to the charge instability within the molecule caused by the difference in electronegativity between the oxygen and hydrogen atoms. These bonds lead to the unique behavior of water in its various states.

Explanation:

Hydrogen bonds form between water molecules due to the polar nature of a water molecule. The oxygen atom in water molecules is more electronegative, pulling the shared electron closer resulting in a slight negative charge. Conversely, the hydrogen atoms end up with a slight positive charge. These charges lead to a hydrogen bond when the slightly positive hydrogen atom of one water molecule is attracted to the slightly negative oxygen atom of another water molecule.

Hydrogen bonds are weaker than covalent or ionic bonds, but their large numbers in water lead to significant effects. They help maintain the liquid state of water at room temperature, among other unique properties. Hydrogen bonds aren't exclusive to water molecules; they can also be observed in DNA structure and protein formation.

Learn more about Hydrogen bonds here:

brainly.com/question/33738484

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Which term below describes a piece of DNA that provides a set of instructions to a cell to make a specific protein?

Answers

The piece of DNA that provides a set of instructions to a cell to make a specific protein is an exon.

Respiration and photosynthesis are considered complementary processes. Explain what is meant by this andhow they are both critical processes in the carbon cycle.

Answers

Answer:

The photosynthesis process produces carbon dioxides and water and breaks into carbon dioxide and water by forming ATP molecules, in addition to this cellular respiration. They are therefore both considered to be mutually complementary.

Explanation:

Photosynthesis and cellular respiration are additional processes, as photosynthesis products are used as cell respiration reactants.

Photosynthesis is a carbohydrate-generating process, whereas cellular respiration is a catabolism process that divides the carbohydrates into ATP.

Photosynthesis is the process of transforming light energy into chemical energy by green plants. During the process, the plants make use of solar energy in order to convert carbon dioxide and water into carbohydrates. And also releases oxygen into the atmosphere. Photosynthesis is called primary production because the food produced by the process makes the base of most ecosystem food chains. It stores energy at the bottom level of the food chain.

All animals are photosynthesized because their source of energy is glucose, but they are unable to produce glucose themselves, so they must rely on plants to obtain glucose.

And also during photosynthesis, oxygen that animals respire is released.

Breathing of the cell:

The process of breaking up the glucose molecules released by the living cells and stored as ATP molecules. In total, glucose and oxygen is a three-stage process that reacts to carbon dioxide and water.

In the following phases cellular respiration

• Glycolysis

• Oxidation of the pyruvate

• Citric acid / Cycle of cancer

• Oxidative phosphatide

Energy is released from ATP when

Answers

Answer: The correct answer for the blank is-

Energy is released from ATP ( adenosine triphosphate) when high energy phosphoanhydride bond ( present between two phosphate) is broken down or hydrolyzed.

This results in the formation of ADP ( adenosine diphosphate) and Pi ( inorganic phosphate).

Therefore, hydrolysis of ATP releases energy.

Energy is released from ATP when ATP undergoes hydrolysis.

ATP supplies energy for cellular activities by breaking off a phosphate group from its structure.

ATP is produced through the process of cellular respiration where food particles such as glucose are broken down to yield energy in the form of ATP.

Further Explanation

Cellular respiration

  • Cellular respiration is the process of by which living organisms use nutrients or food substances to generate energy in the form of ATP that is required to drive cellular processes.
  • Cellular respiration takes place in an organelle known as mitochondrion which is known as the powerhouse of the cell.
  • Cellular respiration takes place in three stages; glycolysis, Kreb's cycle and electron transport.  
  • Each step of cellular respiration yields ATP with the electron transport chain yielding the most number of ATP molecules, 34 ATP molecules.

ATP

  • ATP is the energy carrier molecule in the cells of living organisms. It is the usable form of energy by the cells in all living forms. Cells use ATP to drive all the cellular activities such as transport, excretion, growth and development, etc.
  • ATP is produced through the process of cellular respiration where food particles such as glucose are broken down to yield energy in the form of ATP.

Hydrolysis of ATP

  • ATP molecule is made up of a nucleotide base adenine attached to three phosphate groups.
  • Energy is contained in the bonds between the phosphates in an ATP molecule which is released when they are broken through the addition of water molecules a process called hydrolysis.
  • ATP powers cellular processes by transferring phosphates group in its structure to other molecules which releases energy required to drive the cellular activities.

Keywords: cellular respiration, ATP, energy  

Learn more about:  

Level: High school  

Subject: Biology  

Topic: Cellular respiration

Sub-topic: Hydrolysis ATP
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