2024 Biology Fall Final Exam: Advanced

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes speed up reactions by lowering the activation energy.

Front

In which phase of the cell cycle does DNA replication occur in eukaryotic cells?

Back

DNA replication occurs in the S phase (synthesis) of the cell cycle.

Front

Which enzyme is specifically involved in the process of transcription?

Back

RNA Polymerase is the enzyme found only in transcription.

Front

What is the purpose of transcription in cellular processes?

Back

The purpose of transcription is to transcribe information in the DNA sequence for use by the cell.

Front

What happens to a paramecium in a hypertonic environment?

Back

Water will diffuse out of the paramecium.

Front

Define activation energy in the context of chemical reactions.

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment.

Front

What is the function of the contractile vacuole in paramecium?

Back

The contractile vacuole helps to pump out excess water to maintain homeostasis.

Front

What is the difference between hypotonic and hypertonic environments?

Back

A hypotonic environment has a lower concentration of solutes compared to the inside of the cell, while a hypertonic environment has a higher concentration of solutes.

Front

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

Back

The S phase is significant because it is when DNA is replicated, ensuring that each daughter cell receives a complete set of genetic information.