Active and Passive Transport Review

Front

What does 'semi-permeable' mean?

Back

Some molecules can move through the membrane.

Front

True or False: Active transport moves substances against a concentration gradient.

Back

True.

Front

Back

Front

What happens to a cell placed in a HYPERTONIC solution?

Back

It shrinks.

Front

Movement of molecules through the cell membrane from high to low concentration is called?

Back

Passive Transport.

Front

What is the primary energy source for active transport?

Back

ATP (Adenosine Triphosphate).

Front

Define passive transport.

Back

The movement of molecules across a cell membrane without the use of energy.

Front

What is osmosis?

Back

The diffusion of water across a semi-permeable membrane.

Front

What happens to a cell in a HYPOTONIC solution?

Back

It swells.

Front

What is the role of carrier proteins in active transport?

Back

They help move substances across the membrane against their concentration gradient.