Bio Test 2
The 3 membrane protein types are transmembrane, lipid anchored, and peripheral, which one(s) attaches on each side?
Transmembrane
Lipid- Anchored
Peripheral
All of the above
None of them are connected to both sides
What type of transport requires no energy to move a molecule across the membrane?
A. Active
B. Passive
C. Energy
D. A and C only
D. None of the above
Active transport is energy dependent so what acts as a pump?
A. Diffusion
B. Transporters
C. Channels
D. A and C only
E. None of the above
What controlling channel is membrane potential part of?
A. Ligand
B. Voltage
C. Mechanical
D. Extracellular
E. Intracellular
A catabolic pathway gets energy and an anabolic pathway requires energy but what else do they do?
A. Breaks things down
B. Builds things ups
C. Makes a path for the cell
D. Both A and B
E. None of the above
What is the name(s) of the controlling channels?
A. Ligand
B. Voltage
C. Mechanical
D. A and C only
E. All of the above
What does allosteric regulation do to a protein?
A. Activates
B. Keeps Neutal
C. Deactivates
D. Both A and C only
E. None of the above
Which type of loop tends to slow down the process?
A. Negative
B. Positive
C. Neutral
D. All of the above
E. None of the above
Fermentation requires prokaryotes and eukaryotes, what does aerobic respiration require?
A. Prokaryotes and Eukaryotes
B. Just Prokaryotes
C. Just Eukaryotes
D. ATP
E. None of the above
In the basics of making ATP in the mitochondria what does energy do?
Pump out H+ Ions
B. Pump in reverse to make ATP
C. Use H+ for ion gradient
D. Both A and B only
E. None of the above
Which membrane protein is on the plasma membrane side, not both?
A. Transmembrane Proteins
B. Lipid- Anchored Proteins
C. Peripheral Proteins
D. Enzyme Proteins
E. All of the above
Passive transport doesn’t require energy and uses concentration gradients. Which of the following statements below are true?
A.Diffusion, channels, and transporters are involved
B. Drives to equilibrium
C. Has coupled transport
D. All of the above
E. A and B but not C
Which of the following statements are true about active transport?
A. Energy dependent going against the grain
B. Has transporter pumps
C. Segregates transported molecules based on size/charge
D. All of the above
E. A and B but not C
What is the theory behind repolarizing a cell?
A. To control channels
B. Diffusion
C. Reestablish and membrane potential
D. To help make ATP
E. Uniport
Catabolic pathways and anabolic pathways vary from each other how?
A. Catabolic breaks things down and anabolic builds things up
B. Catabolic builds things up and anabolic breaks things down
C. One makes energy and the other one finds it
D. None of the above
E. All of the above
What is the channel specificity main role?
A.Shape binds to ion or molecule of interest
B. Segregate transported molecules based on size/charge
C. Use energy to pump H+ ions
D. Break down of glucose
E. None of the above
Which of the following are enzyme regulators?
A. Other proteins
B. Ions
C. PO4
D. Other molecules
E. All of the above
Which type of feedback can further activate the signaling pathway?
A.Positive feedback
B. Negative feekback
C. Bipolar feedback
D. None of the above
E. A and B but not C
ATP is produced in the mitochondria by:
A. The use of energy to pump out H+ ions
B. Use of H+ ion gradient, pump in reverse to generate ATP
C. Use of light energy to split 2H2O
D. All of the above
E. A & B, but not C
If a membrane protein is only temporarily attached to an integral membrane protein, instead of permanently to the membrane, what kind of membrane protein is this?
A. Lipid- Anchored Proteins
B. Beta Barrel Proteins
C. Peripheral Proteins
D. Transmembrane
E. None of these
Both Channels and Transports are used in passive transport and are made of transmembrane proteins. But which one of these should be used if a large number of molecules needs to be transported all at once?
A. Channels
B. Transports
Either can be used; They both allow many molecules through at once
D. Neither can be used; ATP pumps are the only method that allow many through at once
E. None of the above
If there is a low concentration of Sodium inside a cell, but a high concentration of glucose, how would a glucose molecule get inside the cell if it is going against its concentration gradient?
A. Use an antiport with another glucose molecule inside that is trying to get out
B. Use an antiport with a Sodium molecule inside that is trying to get out
C. Use a symport with a glucose molecule also trying to get inside against its gradient
D. Use a symport with a Sodium molecule going inside with its gradient
Either A or D would work
What kind of transports does action potential utilize?
A. Na Channels
B. K channels
C. Na/K pumps
D. A and B but not C
E. All of the above
If a molecule is broken down into simpler components and energy is created, what type of metabolic pathway was just used?
A. Anabolic Pathway
B. Biosynthetic Pathway
C. Catabolic Pathway
D. A and B but not C
E. B and C but not A
What two characteristics determine how molecules are segregated by channels and transporters?
A. pH and size
B. Size and Charge
C. Charge and pH
D. Volume and Charge
E. Volume and pH
If a PO4 molecule binds to a regulatory site on a protein, what does it mean when it “activates” the protein?
A. It makes the protein move faster, increasing its chances of interacting with a substrate
B.It breaks the protein down into smaller building blocks to produce energy
C. It changes the shape of the binding site to allow it to bind with a specific substrate
D. It creates a positive feedback loop to activate the metabolic pathway
E. Both C and D are correct
To create a negative feedback loop to deactivate a metabolic pathway, what must the final product substrate then interact with and inhibit?
A. The very first enzyme in the metabolic pathway
B. The last enzyme in metabolic pathway
C. The next substrate set to go through the metabolic pathway
D. It could interact with and inhibit any of these
E. None of the above
If yeast is undergoing glycolysis very quickly in an environment with little or no oxygen and is releasing ethanol as a product, is this reaction fermentation or respiration?
A. Fermentation
B. Respiration
C. None of these
D. Not enough information is given
E. Both A and B
What are the main differences between the environment of the matrix space and the intermembrane space in mitochondria that is crucial to drive the process of oxidative phosphorylation and ATP synthase?
A.Size and space difference
B. Charge Difference
C. pH difference
D. All of the above
E. B and C but not A
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