If a cell has 46 chromosomes before meiosis, the n

ATI RN

ATI RN Test Bank

If a cell has 46 chromosomes before meiosis, the new cells will have chromosomes.

A. 23 B. 92 C. 46 D. 69

Correct Answer: A

Rationale: Meiosis reduces the chromosome number by half, from 46 to 23 in gametes.

Which of the following does NOT describe a water molecule?

A. Covalently bonded B. A polar molecule C. Inorganic D. An ionic compound

Correct Answer: D

Rationale: Water is covalent and polar but inorganic; it's not ionic (no full electron transfer).

A chemical substance that releases ions in water is a(an)

A. electrolyte B. isotope C. carbohydrate D. lipid

Correct Answer: A

Rationale: Electrolytes dissociate into ions in water, conducting electricity.

The storage form of glucose in plants is:

A. cellulose B. starch C. sucrose D. glycogen

Correct Answer: B

Rationale: Starch is the plant polysaccharide for glucose storage.

How many different amino acids can be used to make human proteins?

A. 10 B. 12 C. 20 D. 24

Correct Answer: C

Rationale: 20 standard amino acids are encoded by the genetic code for human proteins.

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