PMA 2 Review

Front

What organelle of the cell produces energy?

Back

Mitochondria are the organelles responsible for producing energy in the form of ATP through cellular respiration.

Front

Why are fossil fuels considered a nonrenewable resource?

Back

Fossil fuels are considered nonrenewable because they take millions of years to form and cannot be replenished within a human timescale.

Front

What type of transport across the membrane requires energy?

Back

Active transport requires energy to move substances against their concentration gradient.

Front

What is the consequence of a reduced gene pool in a population?

Back

A reduced gene pool can lead to increased vulnerability to environmental changes and a higher risk of inbreeding.

Front

What is osmosis?

Back

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

Front

What is the function of the Golgi body in a cell?

Back

The Golgi body modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Front

What is the role of vacuoles in plant cells?

Back

Vacuoles store nutrients, waste products, and help maintain turgor pressure in plant cells.

Front

What is the difference between passive 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 gradient.

Front

What is the significance of the NA/K pump?

Back

The NA/K pump is essential for maintaining the electrochemical gradient across the cell membrane, which is crucial for nerve impulse transmission.

Front

How do kidneys function in the context of osmosis?

Back

Kidneys regulate water balance in the body by filtering blood and reabsorbing water through osmosis.