Fall Midterm Review (OnRamps Biology)

Front

What is the Kingdom that has organisms with rigid cell walls and are heterotrophs?

Back

Fungi

Front

Which steroid affects the fluidity of the plasma membrane?

Back

Cholesterol

Front

What is defined as the attraction of the hydrogen from one molecule to the oxygen of a different molecule?

Back

Hydrogen bonding

Front

What is a reusable, complex protein that speeds up chemical reactions?

Back

Enzyme

Front

Which molecule would likely move through the lipid bilayer of a plasma membrane most rapidly?

Back

CO₂

Front

What is the primary function of enzymes in biological systems?

Back

To catalyze chemical reactions and increase reaction rates.

Front

What are the main components of the plasma membrane?

Back

Phospholipids, cholesterol, proteins, and carbohydrates.

Front

Define heterotrophs.

Back

Organisms that cannot produce their own food and rely on consuming other organisms.

Front

What is the role of cholesterol in the plasma membrane?

Back

To maintain membrane fluidity and stability.

Front

What is the difference between hydrophilic and hydrophobic molecules?

Back

Hydrophilic molecules are attracted to water, while hydrophobic molecules repel water.