1. Facilitated transport is used to move A. Hydrophilic molecules down their con
ID: 3521608 • Letter: 1
Question
1. Facilitated transport is used to move A. Hydrophilic molecules down their concentration gra B. Hydrophilic molecules up their concentration gradient C. Hydrophobic molecules down their concentration gradient D. Hydrophobic molecules up their concentration gradient 2. Facilitate transport requires A. An integral membrane protein 8. A peripheral membrane protein C. ATP D. A and C E. B and C 3. Transporters are an example of A. Active transport B. Facilitated transport C. Osmosis D. Passive transport E. Simple diffusion 4. If an integral membrane protein moves glucose int a cell, we can conclude that it is A. Antiporter B. lon channel C. Peripheral membrane protein D. Uniporter E. Symporter 5. We will learn about sodium-glucose transport proteins found in the small intestine These proteins allow sodium ions and glucose molecules to enter into cells. Based this information, we can conclude that the sodium-glucose transporter protein is a A. Antiporter B. lon channel C. Peripheral membrane protein D. Uniporter E. Symporter 6. Scientists have discovered that defects in a protein named the sodium/protorn antiporter may result in heart or kidney failure. (Hint: Protons are hydrogen ions What do we know from this passage? The responsible protein must A. Carry only sodium into cells B. Carry only hydrogen ions out of cells C. Carry sodium and hydrogen ions into cells D. Carry sodium and hydrogen ions out of cells E. Carries sodium into cells and hydrogen ions out of cellsExplanation / Answer
Answer 1. Option a
Hydrophilic molecules require carrier protein to pass through the plasma membrane. These move down the concentration gradient.
Answer 2. Option a
Facilitated diffusion requires specific transmembrane integral protein but no energy in the form of ATP, as it occurs down the concentration gradient.
Answer 3. Option b
Transporters are the carriers that help in the facilitated transport.
Answer 4. Option D
Uniporter are the carrier proteins that transport one molecule into a cell through facilitated diffusion.
Answer 5. Option E
Because allows movement in the same direction, as both are going inside the cell.
Answer 6. Option e
Antiporter work in different directions. One ion will go in and another will go out.
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