2024--Semester 1 Biology Exam Review

Front

What are cyclins and their role in the cell cycle?

Back

Cyclins are proteins that bind to enzymes to signal the cell to progress through stages of cell replication. They degrade at the end of the cycle to prevent further signaling.

Front

What is the consequence of uncontrolled production of cyclins?

Back

Uncontrolled production of cyclins can lead to the formation of tumors.

Front

What is a shared function of carbohydrates and lipids?

Back

Both carbohydrates and lipids serve the function of energy storage in cells.

Front

How can a cell be classified if it has membrane-bound structures?

Back

If a cell has membrane-bound structures, it is classified as a eukaryote.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, a cell will swell as water enters due to osmosis.

Front

What is the conclusion about the cell membrane based on egg experiments in different solutions?

Back

The cell membrane is selectively permeable, allowing water and some solutes to move in and out of the cell.

Front

What is enzyme inhibition?

Back

Enzyme inhibition occurs when an inhibitor prevents a substrate from attaching to the enzyme, thus blocking the enzyme's activity.

Front

What is the effect of an inhibitor on an enzyme?

Back

An inhibitor prevents a substrate from attaching to the enzyme.

Front

Define selectively permeable membrane.

Back

A selectively permeable membrane allows certain substances to pass through while blocking others.

Front

What is the difference between eukaryotic and prokaryotic cells?

Back

Eukaryotic cells have membrane-bound organelles and a nucleus, while prokaryotic cells do not.