HESI A2- Biology Sample Questions

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1

What is the most important characteristic of water?

  1. Polarity of hydrogen bonding
  2. Polarity of the hydrogen-oxygen bonds
  3. High specific heat
  4. Versatile solvent

B

2

Which of the following biologic maromolecules are most important to the cellular membrane?

  1. Steroids
  2. Proteins
  3. Carohydrates
  4. Phospholipids

D

3

What cellular organelle is the site of the catabolic pathway leading to cellular energy production?

  1. Mitochondrion
  2. Chloroplast
  3. Smooth ER
  4. Rough ER

A

4

What type of cellular reproduction do bacteria undergo?

  1. Mitosis
  2. Meiosis
  3. Binary fission
  4. Cellular division

C

5

What is the probability that a recessive trait would be expressed in offspring if two parents who are both heterozgous for the desired trait were crossed?

  1. 100%
  2. 75%
  3. 50%
  4. 25%

D

6

In which organelle does transcription begin?

  1. Ribosome
  2. Nucleus
  3. mRNA
  4. Cytoplasm

B