CLEP Biology 2

Question 1

During which phase of mitosis do sister chromatids separate and move toward opposite poles?

Accepted Answer

Anaphase

Answer

In anaphase, the centromeres split and sister chromatids are pulled to opposite poles.

Question 2

Which molecule serves as the primary energy currency of the cell?

Accepted Answer

ATP

Answer

ATP releases usable energy when its terminal phosphate bond is hydrolyzed.

Question 3

In a dihybrid cross of two heterozygotes (AaBb x AaBb), what is the expected phenotypic ratio?

Accepted Answer

9:3:3:1

Answer

Independent assortment of two traits yields a 9:3:3:1 phenotypic ratio.

Question 4

Which organelle is responsible for detoxification and lipid synthesis in liver cells?

Accepted Answer

Smooth endoplasmic reticulum

Answer

The smooth ER lacks ribosomes and handles lipid synthesis and detoxification.

Question 5

What type of bond holds complementary base pairs together in the DNA double helix?

Accepted Answer

Hydrogen bonds

Answer

Hydrogen bonds between bases allow the strands to separate during replication.

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