ATI Biology Practice Test 3

Question 1

Which phase of the cell cycle involves the actual division of the cytoplasm into two daughter cells?

Accepted Answer

Cytokinesis

Answer

S phase

Answer

G2 phase

Answer

Metaphase

Question 2

What type of bond holds the two strands of DNA together in a double helix?

Accepted Answer

Hydrogen bonds

Answer

Covalent bonds

Answer

Ionic bonds

Answer

Peptide bonds

Question 3

Which blood vessel carries deoxygenated blood from the heart to the lungs?

Accepted Answer

Pulmonary artery

Answer

Pulmonary vein

Answer

Aorta

Answer

Superior vena cava

Question 4

Which macromolecule serves as the primary long-term energy storage molecule in animals?

Accepted Answer

Triglycerides

Answer

Glycogen

Answer

Starch

Answer

Cellulose

Question 5

In the Punnett square cross Tt x Tt, what percentage of offspring are expected to be homozygous recessive?

Accepted Answer

25%

Answer

50%

Answer

75%

Answer

0%

Question 6

Which enzyme catalyzes the transcription of DNA into mRNA?

Accepted Answer

RNA polymerase

Answer

DNA polymerase

Answer

Reverse transcriptase

Answer

Helicase