AP BIOLOGY-CHAPTER 4&5 -FINAL TEST-SEM1-2024

Front

What is the term for the state of maintaining a relatively stable internal balance in an organism?

Back

Homeostasis

Front

What is the structure of the plasma membrane of a cell?

Back

A phospholipid bilayer

Front

Which type of transport across a cell membrane requires energy in the form of ATP?

Back

Active transport

Front

What is the function of carbohydrate chains in the plasma membrane?

Back

They play a role in cell recognition and signaling.

Front

What type of passive transport involves the movement of molecules through a membrane via protein channels?

Back

Facilitated diffusion

Front

What is the difference between hypertonic and hypotonic solutions?

Back

Hypertonic solutions have a higher concentration of solutes compared to the inside of the cell, while hypotonic solutions have a lower concentration.

Front

What is the role of cholesterol in the plasma membrane?

Back

Cholesterol helps to stabilize the membrane's fluidity.

Front

Define passive transport.

Back

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

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the primary function of the plasma membrane?

Back

To protect the cell and regulate what enters and exits.