CLEP Biology 3

Question 1

Which of the following best describes natural selection?

Accepted Answer

Differential reproductive success based on heritable traits

Answer

Natural selection favors heritable traits that increase survival and reproduction.

Question 2

Where does the Krebs (citric acid) cycle occur in eukaryotic cells?

Accepted Answer

Mitochondrial matrix

Answer

The Krebs cycle takes place in the mitochondrial matrix.

Question 3

Which kingdom contains prokaryotic organisms that often live in extreme environments?

Accepted Answer

Archaea

Answer

Archaea are prokaryotes frequently found in extreme habitats like hot springs.

Question 4

A population in Hardy-Weinberg equilibrium is NOT experiencing which of the following?

Accepted Answer

Gene flow

Answer

Hardy-Weinberg equilibrium requires no gene flow, mutation, selection, or genetic drift.

Question 5

Which structure in plant cells is the primary site of photosynthesis?

Accepted Answer

Chloroplast

Answer

Chloroplasts contain chlorophyll and carry out photosynthesis.

CLEP Practice Test