Biology EOC Review #2

Front

What is the function of enzymes in chemical reactions?

Back

Enzymes speed up chemical reactions by lowering the activation energy required for the reaction to occur.

Front

What happens to enzymes at high temperatures?

Back

Enzymes can denature, meaning they change shape and lose their functionality.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the movement of materials down the concentration gradient through a protein channel without the use of energy.

Front

What type of cellular transport is exocytosis?

Back

Exocytosis is a process where cells expel materials in vesicles, releasing them outside the cell.

Front

What type of solution causes a cell to shrink?

Back

A hypertonic solution causes a cell to lose water and shrink.

Front

Which organism uses cilia for movement?

Back

Paramecium uses cilia for movement.

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 osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is the role of pH in enzyme activity?

Back

Extreme pH levels can denature enzymes, affecting their shape and function.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing the cell to swell.