Biology Unit 1 Semester Review 2024

Front

What RNA bases pair with TAC during transcription?

Back

AUG

Front

What happens during the G1 phase of the cell cycle?

Back

Cell grows and prepares.

Front

What phase of the cell cycle is characterized by chromosomes lining up in the middle of the cell?

Back

Metaphase

Front

What is a checkpoint in the cell cycle?

Back

A critical point where stop and go signals can regulate the cycle.

Front

What is the simplest level of organization in the body?

Back

Cell.

Front

What is the role of RNA in protein synthesis?

Back

RNA carries the genetic information from DNA to the ribosome for protein synthesis.

Front

What is the function of ribosomes?

Back

Ribosomes are the sites of protein synthesis.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.

Front

What occurs during the S phase of the cell cycle?

Back

DNA is replicated.

Front

What is the purpose of mitosis?

Back

To divide a cell's nucleus and its contents into two identical nuclei.