Plasma membrane

Identify the organelle shown in the image.

• Plasma membrane

• Nucleus

• Flexible mosaic model

• Cytoplasm

The plasma membrane is found in which of the following

I - Prokaryotes

II - Ribosomes

III - Plant cells

• I only

• I and II only

• I and III only

• I, II and III

Which of the following function is NOT carried out by the plasma membrane?

• Protects the genetic material from damage

• Allows nutrients to enter and waste to exit the cell

• Helps to maintains homeostasis within the cell

• Controls and selects which substances may enter/exit the cell

Which of the below is the correct label for structure A in the image?

• Phospholipid

• Cholesterol

• Protein

• Glycolipid

Which structure A-D allows the cell to detect chemical signals sent by the body?

• A

• B

• C

• D

The image represents a phospholipid found in plasma membranes. Which of the following best describes A₂?

• Nonpolar tail

• Polar tail

• Nonpolar head

• Polar head

Which structure would allow useful substances like glucose to enter the cell?

• Transport proteins

• Fatty acids

• Cholesterol

• Phosphate head

Which of the below may happen if the plasma membrane had no cholesterol molecules within the phospholipid bilayer?

• The plasma membrane would be less fluid

• The fatty acid tails would be less sticky

• Transport proteins would stop transporting substances

• Phospholipid molecules would form a single layer