Biology 4.B STAAR Released Questions

Front

What is the process of energy conversion that takes place in the mitochondria?

Back

The energy in the bonds of glucose molecules is transferred to the phosphate bonds in ATP.

Front

What is osmosis in an animal cell?

Back

Osmosis is the movement of water molecules across the plasma membrane until solute concentrations are equal on both sides of the membrane.

Front

How does the plasma membrane contribute to cellular homeostasis?

Back

The plasma membrane regulates the movement of substances in and out of the cell, maintaining a stable internal environment.

Front

What molecule synthesized by plants is a major source of energy for cellular processes?

Back

Glucose is a major source of energy for cellular processes in both plants and animals.

Front

What type of movement across a cell's plasma membrane requires energy?

Back

Active Transport requires energy supplied by ATP.

Front

Define Active Transport.

Back

Active Transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy.

Front

What is the role of ATP in cellular processes?

Back

ATP serves as the primary energy carrier in cells, providing energy for various biochemical reactions.

Front

Explain the concept of cellular homeostasis.

Back

Cellular homeostasis is the process by which cells maintain a stable internal environment despite changes in external conditions.

Front

What is the difference between passive transport and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached.