HESI A2 Biology Exam (with Verified Answers) / Latest 2024
Why is polarity the most important characteristic of water?
ANS: - 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 w...
Why is polarity the most important characteristic of water?
ANS: - 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
ANS: - B. Proteins
Which organelle would you expect to be present in a cell responsible for
detoxifying multiple molecules?
A. Rough ER
B. Smooth ER
C. Lysosome
D. Golgi apparatus
ANS: - 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
ANS: - B. Mitochondria
Which part of cell respiration produces the greatest amount of ATP?
A. ETC
B. Glycolysis
C. Krebs cycle
D. Fermentation
,ANS: - 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.
D. Not enough oxygen is produced to keep fermentation running –
ANS: - 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.
ANS: - A. Both result in a net production of ATP and NADH
Why is it important for cells to undergo mitosis?
ANS: - 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
ANS: – B. 36
Which of the following shows how information is transformed to make a
protein?
A. DNA-RNA-protein
B. Gene-chromosome-protein
C. ATP-amino acid-protein
D. RNA-DNA-protein
ANS: - 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
ANS: - 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
ANS: - A. Hypothesis
A molecule of water is bonded with another molecule of water by what type of
bond?
A. Ionic
B. Covalent
C. Hydrogen
D. Molecular
ANS: - C. Hydrogen
Which of the following is a benefit of the intermolecular hydrogen bonding of
water? (Select all that apply)
A. Water has a relatively high specific heat value.
B. Water has strong cohesive and adhesive properties.
C. Polarity of water allows it to act as a versatile solvent.
D. Water moves from higher to lower concentrations
ANS- A. Water has a high specific heat
B. Water has strong cohesive and adhesive properties
C. Polarity of water allows it to act as a versatile solvent
Of all the molecules that are significant to biology, which of the following are
considered the most important?
A. Carbohydrates, lipids, protein, and nucleic acids
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