Biology Practice Test Flashcards
6 cards from real ATI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Biology Practice Test flashcards as text
Which phase of the cell cycle involves the actual division of the cytoplasm into two daughter cells?
Answer: Cytokinesis
Cytokinesis is the final stage of cell division where the cytoplasm splits, producing two separate daughter cells.
What type of bond holds the two strands of DNA together in a double helix?
Answer: Hydrogen bonds
Hydrogen bonds between complementary base pairs (A-T and G-C) hold the two strands of the DNA double helix together.
Which blood vessel carries deoxygenated blood from the heart to the lungs?
Answer: Pulmonary artery
The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs for gas exchange.
Which macromolecule serves as the primary long-term energy storage molecule in animals?
Answer: Triglycerides
Triglycerides (fats) are the primary long-term energy storage molecules in animals, storing more energy per gram than carbohydrates.
In the Punnett square cross Tt x Tt, what percentage of offspring are expected to be homozygous recessive?
Answer: 25%
In a monohybrid cross between two heterozygotes (Tt x Tt), 25% of offspring are expected to be homozygous recessive (tt).
Which enzyme catalyzes the transcription of DNA into mRNA?
Answer: RNA polymerase
RNA polymerase reads the DNA template strand and synthesizes a complementary mRNA molecule during transcription.