Which of the following statements is true about the structure of the plasma membrane?

It consists of a phospholipid bilayer.

Which of the following is true about the movement of ions via facilitated diffusion?

Ions will move down their concentration gradient.

What is happening here?

Primary active transport: 3 Na+ out; 2 K+ in

Which of the following is an example of osmosis in biology?

Absorption of water in the human alimentary canal

What can you conclude from the diagram?

Only water molecules move into the cell by diffusion.

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Transport Across Cell Membranes

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A biology quiz about passive and active transport across cell membranes

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Questions 14

Answers

1
Which of the following is NOT a method of passive transport?
Facilitated diffusion
Osmosis
Endocytosis
Simple diffusion
2
Answer the following based on the information provided:
Pore protein
Glycoprotein
Carrier protein
Polysaccharide chain
3
Which of the following statements is true about the structure of the plasma membrane?
Phospholipid bilayer is embedded between two proteins.
It consists of a phospholipid bilayer.
Carbohydrates make up the bilayer.
The bilayer and the proteins cannot move.
4
Which of the following is true about the movement of ions via facilitated diffusion?
Ions will move in both directions.
Ions move through the plasma membrane by osmosis.
Ions will move down their concentration gradient.
Ions move against their concentration gradient.
5
How does carbon dioxide move from cells into the human circulatory system?
Osmosis
Simple diffusion
Active transport
Facilitated diffusion
6
Which of the following structures help cells to recognize each other?
A
D
B
C
7
What is happening here?
Primary active transport: 2 Na+ out 3 K+ in
Secondary active transport: 2 Na+ out; 3 K+ in
Primary active transport: 3 Na+ out; 2 K+ in
Secondary active transport: 3 Na+ out; 2 K+ in
8
What is the structure labeled "X"?
Proton pump
Carrier protein
Pore protein
Sodium potassium ATPase
9
Which of the following is an example of osmosis in biology?
Absorption of dissolved mineral salts by root hairs
Absorption of nutrients into algae
Absorption of amino acids in the small intestine
Absorption of water in the human alimentary canal
10
What can you conclude from the diagram?
Only glucose moves into the cell by active transport.
Both water and glucose move into the cell by diffusion.
Water and glucose move into the cell by active transport.
Only water molecules move into the cell by diffusion.
11
What process moves ions and minerals into the root hair cells of plants?
Simple diffusion
Osmosis
Facilitated diffusion
Active Transport
12
The following happens from left to right. What type of solution surrounds this plant cell?
Isotonic solution
Hypnotic solution
Hypertonic solution
Hypotonic solution
13
What is happening with the symport protein on the right?
Facilitated diffusion
Simple diffusion
Primary active transport
Secondary active transport
14
Substances that dissolve in fats move across the plasma membrane by:
Simple diffusion
Facilitated diffusion
Osmosis
Active transport

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