Cell Transport and Macromolecules Practice

Draw arrows showing which way the water would flow through the cell membrane during osmosis.

Then, caption to explain why you believe the molecules will flow in that direction.

Tags

NGSS.MS-LS1-2

Which biomolecules (THREE) are found in the cell membrane?

• lipids

• proteins

• nucleic acids

• carbohydrates

Which biomolecule makes up MOST of the cell membrane?

• proteins

• carbohydrates

• phospholipids

• nucleic acids

Passive transport ​ (a)   require energy because it moves ​ (b)   the concentration gradient, from ​ (c)   .

• does NOT
• does
• with
• against
• high to low
• low to high

Active transport ​ (a)   require energy because it moves ​ (b)   the concentration gradient, from ​ (c)   .

• does NOT
• does
• with
• against
• high to low
• low to high

Facilitated diffusion and protein pumps are similar because

• They both require energy to function
• They both move molecules from high to low concentration
• They both involve the movement of molecules through proteins

• They both can only move molecules in one direction

What is the correct description of the transport in the image?

• small molecules crossing the lipid bilayer (diffusion)

• large molecules crossing through a protein (facilitated diffusion)

• many molecules coming into the cell using a membrane vesicle (endocytosis)

• many molecules coming out of the cell using a vesicle to fuse with the membrane (exocytosis)

Using the image, choose the correct form of transport and explanation of how you know:

• Active transport, because the molecules are crossing the membrane using a protein

• Passive transport because the molecules are crossing the membrane using a protein

• Active transport because the molecules are moving from low to high concentration

• Passive transport because the molecules are moving from high to low concentration

The two broad categories of cell transport are ...........

(select all correct answers)

• passive transport

• road transport

• food transport

• active transport

Tags

NGSS.HS-LS2-3

In active transport, .............

• energy is required

• energy is not required