Homeostasis and Transport

_______ regulates what enters and leaves a cell.  

• Cell Membrane

• Cell Wall

Tags

7.LS1.2

What is diffusion?

• when molecules move 

• when molecules move from a high concentration to a low.

Tags

7.LS1.2

The picture below is an example of _________________.

• active transport

• diffusion

Tags

7.LS1.2

The movement of molecules against a concentration gradient

• active transport

• osmosis

Tags

7.LS1.2

How does the cell membrane maintain homeostasis within the cell?

• By producing energy for cellular processes

• By regulating the entry and exit of substances

• By storing genetic information

• By synthesizing proteins

Tags

NGSS.HS-LS1-3

How do cells maintain homeostasis in a hypertonic environment?

• By allowing water to enter the cell

• By actively pumping solutes out of the cell

• By allowing water to exit the cell

• By actively pumping solutes into the cell

Tags

NGSS.HS-LS1-3

How does a cell maintain homeostasis when placed in a hypotonic solution?

• By allowing water to enter the cell until it bursts

• By actively pumping water out of the cell

• By allowing water to exit the cell until it shrinks

• By maintaining an equal concentration of solutes inside and outside the cell

Tags

NGSS.HS-LS1-3

Which of the following is a type of passive transport?

• Endocytosis

• Osmosis

• Exocytosis

• Phagocytosis

What role do protein channels play in the cell membrane?

• They provide structural support to the cell membrane.

• They facilitate the transport of specific molecules across the membrane.

• They store energy for the cell.

• They synthesize lipids for the cell membrane.

What is the role of the sodium-potassium pump in cells?

• To transport glucose into the cell

• To maintain the concentration gradient of sodium and potassium ions

• To facilitate the diffusion of water

• To synthesize proteins

Tags

NGSS.HS-LS1-3