HESI A2 Biology Questions and Answers Already Passed
Why is polarity the most important characteristic of water? ✔✔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?
- Carbohydrates
- Proteins
- Lipids
- Nucleic acids ✔✔B. Proteins
Which organelle would you expect to be present in a cell responsible for detoxifying multiple molecules?
- Rough ER
- Smooth ER
- Lysosome
- Golgi apparatus ✔✔B. Smooth ER 1 / 4
A cell from heart muscle would more than likely contain an usually high proportion of:
- Lysosomes
- Mitochondria
- mRNA
- Ribosomes ✔✔B. Mitochondria
Which part of cell respiration produces the greatest amount of ATP?
A. ETC
- Glycolysis
- Krebs cycle
- Fermentation ✔✔A. ETC
When plants do not receive enough water their photosynthetic rated drops. This is because:
- Water is a raw material for the light reactions in photosynthesis.
- Carbon dioxide is not available.
- Water provides the carbon atoms used to make sugar. 2 / 4
- Not enough oxygen is produced to keep fermentation running ✔✔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?
- Both result in a net production of ATP and NADH
- Both require a net input of ATP
- Both result in release of oxygen
- Both use light to initiate the process. ✔✔A. Both result in a net production of ATP and
NADH
Why is it important for cells to undergo mitosis? ✔✔Mitosis produces cells for growth and repair of body tissue.
72 chromosomes undergo meiosis. How many chromosomes will be in each gamete?
- 18
- 36
- 72
D. 144 ✔✔B. 36
- / 4
Which of the following shows how information is transformed to make a protein?
- DNA-RNA-protein
- Gene-chromosome-protein
- ATP-amino acid-protein
- RNA-DNA-protein ✔✔A. DNA-RNA-protein
In the hierarchic system of classification, which of the following is least inclusive?
- Kingdom
- Class
- Genus
- Species ✔✔D. Species
After observing an event, you develop an explanation. This statement is referred to as which of the following?
- Hypothesis
- Experiment
- Conclusion
- Theory ✔✔A. Hypothesis
- / 4