ATI Biology Practice Test 2

Question 1

Which organelle is responsible for producing ATP through oxidative phosphorylation?

Accepted Answer

Mitochondria

Answer

Ribosome

Answer

Golgi apparatus

Answer

Endoplasmic reticulum

Question 2

During DNA replication, which enzyme unwinds the double helix at the replication fork?

Accepted Answer

Helicase

Answer

DNA polymerase

Answer

Ligase

Answer

Primase

Question 3

What is the primary function of transfer RNA (tRNA) during translation?

Accepted Answer

Delivering amino acids to the ribosome

Answer

Carrying the genetic code from the nucleus

Answer

Forming the ribosomal subunits

Answer

Splicing introns from mRNA

Question 4

Which type of inheritance pattern is demonstrated when both alleles are fully expressed in the heterozygous phenotype?

Accepted Answer

Codominance

Answer

Complete dominance

Answer

Incomplete dominance

Answer

Epistasis

Question 5

Which process describes the movement of water across a selectively permeable membrane from an area of lower solute concentration to higher solute concentration?

Accepted Answer

Osmosis

Answer

Active transport

Answer

Facilitated diffusion

Answer

Exocytosis

Question 6

During meiosis, genetic diversity is increased by the exchange of segments between homologous chromosomes. What is this process called?

Accepted Answer

Crossing over

Answer

Nondisjunction

Answer

Cytokinesis

Answer

Independent assortment