HESI A2 Biology Questions WITH
Answers 100% Pass
Why is polarity the most important characteristic of water? - ANSWER-The results
of the polarity are hydrogen bonding, a high specific heat value, and its versatile
solvent properties.
Athletes are often concerned with the question of what they need in their diets to
increase muscle mass and strength. What biologic molecule would you recommend
that would accomplish this?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids - ANSWER-B. Proteins
Which organelle would you expect to be present in a cell responsible for
detoxifying multiple molecules?
A. Rough ER
B. Smooth ER
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,C. Lysosome
D. Golgi apparatus - ANSWER-B. Smooth ER
A cell from heart muscle would more than likely contain an usually high
proportion of:
A. Lysosomes
B. Mitochondria
C. mRNA
D. Ribosomes - ANSWER-B. Mitochondria
Which part of cell respiration produces the greatest amount of ATP?
A. ETC
B. Glycolysis
C. Krebs cycle
D. Fermentation - ANSWER-A. ETC
When plants do not receive enough water their photosynthetic rated drops. This is
because:
A. Water is a raw material for the light reactions in photosynthesis.
B. Carbon dioxide is not available.
C. Water provides the carbon atoms used to make sugar.
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,D. Not enough oxygen is produced to keep fermentation running - ANSWER-A.
Water is a raw material for the light reactions in photosynthesis
Which of the following statements is true about the Krebs cycle and the Calvin
cycle?
A. Both result in a net production of ATP and NADH
B. Both require a net input of ATP
C. Both result in release of oxygen
D. Both use light to initiate the process. - ANSWER-A. Both result in a net
production of ATP and NADH
Why is it important for cells to undergo mitosis? - ANSWER-Mitosis produces
cells for growth and repair of body tissue.
72 chromosomes undergo meiosis. How many chromosomes will be in each
gamete?
A. 18
B. 36
C. 72
D. 144 - ANSWER-B. 36
Which of the following shows how information is transformed to make a protein?
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, A. DNA-RNA-protein
B. Gene-chromosome-protein
C. ATP-amino acid-protein
D. RNA-DNA-protein - ANSWER-A. DNA-RNA-protein
In the hierarchic system of classification, which of the following is least inclusive?
A. Kingdom
B. Class
C. Genus
D. Species - ANSWER-D. Species
After observing an event, you develop an explanation. This statement is referred to
as which of the following?
A. Hypothesis
B. Experiment
C. Conclusion
D. Theory - ANSWER-A. Hypothesis
A molecule of water is bonded with another molecule of water by what type of
bond?
A. Ionic
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Answers 100% Pass
Why is polarity the most important characteristic of water? - ANSWER-The results
of the polarity are hydrogen bonding, a high specific heat value, and its versatile
solvent properties.
Athletes are often concerned with the question of what they need in their diets to
increase muscle mass and strength. What biologic molecule would you recommend
that would accomplish this?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids - ANSWER-B. Proteins
Which organelle would you expect to be present in a cell responsible for
detoxifying multiple molecules?
A. Rough ER
B. Smooth ER
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 1
,C. Lysosome
D. Golgi apparatus - ANSWER-B. Smooth ER
A cell from heart muscle would more than likely contain an usually high
proportion of:
A. Lysosomes
B. Mitochondria
C. mRNA
D. Ribosomes - ANSWER-B. Mitochondria
Which part of cell respiration produces the greatest amount of ATP?
A. ETC
B. Glycolysis
C. Krebs cycle
D. Fermentation - ANSWER-A. ETC
When plants do not receive enough water their photosynthetic rated drops. This is
because:
A. Water is a raw material for the light reactions in photosynthesis.
B. Carbon dioxide is not available.
C. Water provides the carbon atoms used to make sugar.
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 2
,D. Not enough oxygen is produced to keep fermentation running - ANSWER-A.
Water is a raw material for the light reactions in photosynthesis
Which of the following statements is true about the Krebs cycle and the Calvin
cycle?
A. Both result in a net production of ATP and NADH
B. Both require a net input of ATP
C. Both result in release of oxygen
D. Both use light to initiate the process. - ANSWER-A. Both result in a net
production of ATP and NADH
Why is it important for cells to undergo mitosis? - ANSWER-Mitosis produces
cells for growth and repair of body tissue.
72 chromosomes undergo meiosis. How many chromosomes will be in each
gamete?
A. 18
B. 36
C. 72
D. 144 - ANSWER-B. 36
Which of the following shows how information is transformed to make a protein?
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 3
, A. DNA-RNA-protein
B. Gene-chromosome-protein
C. ATP-amino acid-protein
D. RNA-DNA-protein - ANSWER-A. DNA-RNA-protein
In the hierarchic system of classification, which of the following is least inclusive?
A. Kingdom
B. Class
C. Genus
D. Species - ANSWER-D. Species
After observing an event, you develop an explanation. This statement is referred to
as which of the following?
A. Hypothesis
B. Experiment
C. Conclusion
D. Theory - ANSWER-A. Hypothesis
A molecule of water is bonded with another molecule of water by what type of
bond?
A. Ionic
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