AP Biology Unit 2 Test Questions
and Answers
What are the 3 main types of membrane receptors? - Answer- G-protein linked, tyrosine
kinases, ion channel
Oxidative organelles - Answer- Peroxisomes
What happens when you put a red blood cell in pure water (hypotonic solution)? Why? -
Answer- The cell will burst because water rushes into the cell.
The ________ is continuous with the nuclear membrane - Answer- ER membrane
Which part of the phospholipid bilayer is considered hydrophobic? - Answer- Fatty acid
tail
Which part of the phospholipid bilayer is considered hydrophilic? - Answer- Phosphate
head
How does the membrane become semipermeable to polar molecules? - Answer-
Protein channels
_______ is a water channel in bacteria. - Answer- Aquaporin
This is the movement of molecules from a HIGH concentration to a LOW concentration.
What type of transport is this? - Answer- Diffusion, passive transport
What is osmosis? - Answer- Diffusion of water across a semi permeable membrane
What does hypertonic mean? - Answer- More solute, less water
What does hypotonic mean? - Answer- Less solute, more water
What does isotonic mean? - Answer- Equal solute, equal water
What happens when you water plants with salt water? Why? - Answer- It will wilt
because water will leave the plant and go toward the hypertonic solution (salt water).
and Answers
What are the 3 main types of membrane receptors? - Answer- G-protein linked, tyrosine
kinases, ion channel
Oxidative organelles - Answer- Peroxisomes
What happens when you put a red blood cell in pure water (hypotonic solution)? Why? -
Answer- The cell will burst because water rushes into the cell.
The ________ is continuous with the nuclear membrane - Answer- ER membrane
Which part of the phospholipid bilayer is considered hydrophobic? - Answer- Fatty acid
tail
Which part of the phospholipid bilayer is considered hydrophilic? - Answer- Phosphate
head
How does the membrane become semipermeable to polar molecules? - Answer-
Protein channels
_______ is a water channel in bacteria. - Answer- Aquaporin
This is the movement of molecules from a HIGH concentration to a LOW concentration.
What type of transport is this? - Answer- Diffusion, passive transport
What is osmosis? - Answer- Diffusion of water across a semi permeable membrane
What does hypertonic mean? - Answer- More solute, less water
What does hypotonic mean? - Answer- Less solute, more water
What does isotonic mean? - Answer- Equal solute, equal water
What happens when you water plants with salt water? Why? - Answer- It will wilt
because water will leave the plant and go toward the hypertonic solution (salt water).
