AP Biology Final Exam Fall 2023

Front

What connects two sister chromatids?

Back

A centromere.

Front

What property of water is primarily due to hydrogen bonding?

Back

Water develops its properties because of its ability to hydrogen bond.

Front

Which enzyme is responsible for unwinding the DNA strand?

Back

Topoisomerase.

Front

If two parents are BB and Bb, what is the probability of an offspring that is heterozygous?

Back

50%.

Front

During which phase of the cell cycle does genetic information replicate?

Back

S phase of interphase.

Front

What is the role of DNA polymerase?

Back

DNA polymerase synthesizes new DNA strands during replication.

Front

Define the term 'genotype'.

Back

Genotype refers to the genetic constitution of an individual.

Front

What is the function of RNA polymerase?

Back

RNA polymerase synthesizes RNA from a DNA template during transcription.

Front

What is the significance of the S phase in the cell cycle?

Back

The S phase is when DNA replication occurs, resulting in two sister chromatids for each chromosome.

Front

What is a phenotype?

Back

Phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.