Unit 5 Exam: Cell Membrane, Cell Transport, Cell Organelles

How does a cell maintain homeostasis?

• Regulates what enters and leaves the cell
• Flexibility
• Protective barrier
• Structure and support

Tags

NGSS.MS-LS1-2

What is another term for "selectively permeable"?

• Porous
• Acts like a switch
• Permanent
• Semipermeable

Tags

NGSS.MS-LS1-2

Phospholipid tails (fatty acids) are...

• Hydrophobic

• Hydrophilic

Phospholipid heads (phosphate) are...

• Hydrophobic

• Hydrophilic

What does hydrophobic mean?

• Likes water as a friend
• Dissolves in water
• Loves water
• Hates water

What does hydrophilic mean?

• Fills water up
• Hates water
• Loves water
• Only associates with water if it has to

How many layers is the phopholipid bilayer?

• 1

• 2

• 3

• 4

Which of the following is responsible for getting large & complex molecules (like sugars) across the cell membrane?

• Lipids

• Carbs

• Proteins

• Nucleic Acids

A student is looking at a cell in a microscope. The student notes the cell does not have a cell wall, has a nucleus, mitochondria, ribosomes and is one of many cells connected to each other. What type of cell is the student most likely looking at?

• animal

• plant

• fungi

• bacteria

This picture represents what type of cell transport?

• endocytosis
• exocytosis
• osmosis
• passive transport