Biology Quarter 1 Exam Review

Front

What type of cellular transport moves molecules from low to high concentration?

Back

Protein pump is a type of active transport that moves molecules against their concentration gradient, from low to high concentration.

Front

What happens to a cell with a 5% salt solution placed in a 10% salt solution?

Back

The cell will shrink due to osmosis, as water moves out of the cell to balance the higher salt concentration outside.

Front

What is the term for water molecules sticking to other water molecules?

Back

Cohesion is the property of water that allows water molecules to stick to each other.

Front

What macromolecule is primarily used for energy storage in living organisms?

Back

Carbohydrates are macromolecules that serve as a primary energy source for living organisms.

Front

What causes water to move from the roots to the leaves of plants?

Back

Capillary action pulls water molecules like a chain, allowing water to move upward through the plant.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

Define diffusion.

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.

Front

What is the role of a protein pump in cellular transport?

Back

A protein pump actively transports ions or molecules across a cell membrane against their concentration gradient.

Front

What is adhesion in the context of water molecules?

Back

Adhesion is the property of water that allows it to stick to other substances, such as plant cell walls.

Front

What are lipids?

Back

Lipids are a group of macromolecules that are insoluble in water and include fats, oils, and phospholipids.