HESI A2 Version 3, SCIENCE (BIOLOGY, CHEMISTRY and PHYSICS) Health Information Systems Test Bank  Best Exam Solution 

HESI A2 Version 3, SCIENCE (BIOLOGY, CHEMISTRY and PHYSICS)

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1.

BIOLOGY

What is the typical result of mitosis in humans?

A. two diploid cells

B. two haploid cells

C. four diploid cells

D. four haploid cells

2. How does water affect the temperature of a living thing?

A. Water increases temperature.

B. Water keeps temperature stable.

C. Water decreases temperature.

D. Water does not affect temperature.

3. Which of the following is not a product of the Krebs cycle?

A. carbon dioxide

B. oxygen

C. adenosine triphosphate (ATP)

D. energy carriers

4. What kind of bond connects sugar and phosphate in DNA?

A. hydrogen

B. ionic

C. covalent

D. overt

5. What is the second part of an organism’s scientific name?

A. species

B. phylum

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C. population

D. kingdom

6. How are lipids different than other organic molecules?

A. They are indivisible.

B. They are not water soluble.

C. They contain zinc.

D. They form long proteins.

7. Which of the following is not found within a bacterial cell?

A. mitochondria

B. DNA

C. vesicles

D. ribosome

8. Which cell organelle functions to transport materials from the endoplasmic reticulum

throughout the cell?

A. Ribosome

B. Golgi apparatus

C. Lysosome

D. Vacuole

9. Which of the following are the distinct organelles that produce cell energy?

A. Mitochondrion and chloroplast

B. Mitochondrion and nucleus

C. Chloroplast and nucleus

D. Chloroplast and lysosome

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10. Which component of the cell contributes to the protection, communication, and passage

of substances into and out of the cell?

A. Nucleus

B. Cell membrane

C. Endoplasmic reticulum

D. Cytoplasm

11. Which of the following is a protein?

A. cellulose

B. hemoglobin

C. estrogen

D. ATP

12. Which of the following structures is not involved in translation?

A. tRNA

B. mRNA

C. ribosome

D. DNA

13. Which of the following is necessary for cell diffusion?

A. water

B. membrane

C. ATP

D. gradient

14. How many different types of nucleotides are there in DNA?

A. one

B. two

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C. four

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D. eight

15. Which of the following cell types has no nucleus?

A. platelet

B. red blood cell

C. white blood cell

D. phagocyte

16. Which hormone is produced by the pineal gland?

A. insulin

B. testosterone

C. melatonin

D. epinephrine

17. What is the name of the organelle that organizes protein synthesis?

A. mitochondrion

B. nucleus

C. ribosome

D. vacuole

18. During which phase is the chromosome number reduced from diploid to haploid?

A. S phase

B. interphase

C. mitosis

D. meiosis I

19. A molecule of water is bonded with another molecule of water by what type of bond?

A. Ionic

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B. Covalent

C. Hydrogen

D. Molecular

20. 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.

21. 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

B. Carbohydrates, lipids, protein, and calcium

C. Carbohydrates, lipids, protein, and sulfur

D. Carbohydrates, lipids, protein, and iron

22. The cell membrane consists of a bilayer of phospholipids with proteins, cholesterol, and

glycoproteins. This bilayer creates a hydrophobic region between two layers of lipids, making it

which of the following?

A. Impermeable

B. Permeable

C. Selectively permeable

D. Selectively impermeable

23. What are the two catabolic pathways that lead to cellular energy production?

A. Fermentation and internal respiration

B. Fermentation and external respiration

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C. Fermentation and cellular respiration

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D. Fermentation and anaerobic respiration

24. What is the first step in the conversion of glucose to pyruvate?

A. Glycolysis

B. Krebs cycle

C. Electron transport chain

D. Aerobic respiration

25. Lipids are better known as fats, but what are they specifically? (Select all that apply.)

A. Fatty acids

B. Phospholipids

C. Ketones

D. Steroids

26. Why is DNA important for metabolic activities of the cell?

A. It initiates cellular mitosis.

B. It provides cell wall stability.

C. It increases glucose absorption.

D. It controls the synthesis of enzymes.

27. During protein synthesis, what process uses an RNA strand to produce a complementary

strand of DNA?

A. Transcription

B. Translation

C. Transfer synthesis

D. Codon synthesis

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28. What is the function of water in photosynthesis?

A. Combine with carbon dioxide

B. Absorb light energy

C. Supply electrons in the light reactions

D. Transport hydrogen ions in the dark reactions

29. Cells reproduce by different processes, all of which fall into what two categories?

A. Sexual reproduction and binary fission

B. Sexual reproduction and asexual reproduction

C. Asexual reproduction and binary fission

D. Asexual reproduction and mitosis

30. Which of the following describes how a bacterium reproduces?

A. Mitosis

B. Meiosis

C. Binary fission

D. Cytokinesis