CLEP Biology 3

Question 1

Which of the following best describes natural selection?

Accepted Answer

Differential reproductive success based on heritable traits

Answer

Random changes in allele frequency

Answer

Inheritance of acquired characteristics

Answer

Movement of individuals between populations

Question 2

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

Accepted Answer

Mitochondrial matrix

Answer

Cytoplasm

Answer

Inner mitochondrial membrane

Answer

Nucleus

Question 3

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

Accepted Answer

Archaea

Answer

Fungi

Answer

Protista

Answer

Plantae

Question 4

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

Accepted Answer

Gene flow

Answer

Random mating

Answer

Large population size

Answer

Absence of mutation

Question 5

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

Accepted Answer

Chloroplast

Answer

Mitochondrion

Answer

Vacuole

Answer

Cell wall

Question 6

The genetic code is described as 'degenerate' because:

Accepted Answer

Multiple codons can code for the same amino acid

Answer

One codon codes for several amino acids

Answer

Codons are read backwards

Answer

Some codons code for no amino acid

Question 7

Which type of symbiosis benefits one organism while harming the other?

Accepted Answer

Parasitism

Answer

Mutualism

Answer

Commensalism

Answer

Competition