Exam With Questions And Well
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You are studying a poison that interferes with the process of protein transport. You have
determined that this poison inhibits the formation of vesicles by the rough endoplasmic
reticulum. Hypothesize which of the following steps in protein transport STILL OCCUR
despite the cell being exposed to the poison?
I. Tertiary folding of the polypeptide.
II. Exocytosis of the protein
III. Formation of the mRNA
IV. Hydrolysis of peptide bonds
V. Protein modification in Golgi Apparatus
A. II only
B. I, III, and IV
C. II, III, and V
D. II and V -CORRECT ANSWER B. I, III, and IV
If an organism is incapable of neuronal plasticity, which of the following will still occur.
A. removal of existing synapses
B. neuronal development
C. encoding to short-term memory
D. retrieval from long-term memory -CORRECT ANSWER B. neuronal development
Compare and contrast the components of a chloroplast. Photosystem II is located in the
______________ and the Calvin cycle occurs in the ______________.
A. outer membrane, cytosol
B. thylakoid membrane, stroma
C. inner membrane, thylakoid
D. stroma, thylakoid membrane -CORRECT ANSWER B. thylakoid membrane, stroma
The oxygen molecules that are used in the mitochondrion during cell respiration move
into the cell because they:
A. are actively transported against their concentration gradient.
B. cycle through ATP synthase.
C. bind to transmembrane proteins which produce channels in the membrane.
D. follow their concentration gradient. -CORRECT ANSWER D. follow their
concentration gradient.
,Compare and contrast organelles. Which of the following is/are TRUE regarding the
endoplasmic reticulum and Golgi apparatus?
I. Both organelles are contiguous with the nuclear envelope.
II. Both the Golgi and ER are studded with ribosomes.
III. The ER is involved both protein synthesis and modification, the Golgi only with
protein synthesis.
IV. The Golgi is a set of separate compartments while the ER has a single continuous
lumen.
A. I and II
B. II and III
C. IV only
D. III only -CORRECT ANSWER C. IV only
The human small intestine has a pH of about 5.5, the human stomach has a pH of 2.
Diagnose the result of taking a medication that lowers the pH in the intestine to the
same as in the stomach? The intestinal enzymes _________
A. will stimulate an abnormally high rate of digestion.
B. will denature and will no longer be biologically active.
C. will function properly and begin to digest materials in the stomach.
D. will raise the pH of the stomach and begin to function. -CORRECT ANSWER B. will
denature and will no longer be biologically active.
Identify which of the following statements are functions of enzymes in biological
systems.
I. lower the activation energy needed for a reaction
II. increase the rate of chemical reactions in cells
III. physically bring together two reactants
IV. facilitate the breaking of chemical bonds
V. facilitate a reaction that would otherwise not occur
A. II, IV and V
B. I, II, III and V
C. I, III and V
D. I, II, III and IV -CORRECT ANSWER D. I, II, III and IV
Identify where in a prokaryotic cell the conversion of G3P to pyruvate occurs during
respiration.
A. cristae
B. cytosol
C. outer mitochondrial membrane
D. matrix -CORRECT ANSWER B. cytosol
,If all of the proteins were removed from a cell's membrane, hypothesize which of the
following processes would still occur?
I. Simple Diffusion
II. Transport of Hydrogen Ions (H+)
III. Osmosis
IV. ATP synthase's production of ATP
V. Facilitated Diffusion
A. I, II, and IV
B. I, III, and V
C. I and III
D. II, III, and V -CORRECT ANSWER C. I and III
Nerve cells, called neurons, maintain a higher concentration of Na+ outside the cell than
inside the cell. When small protein channels are opened in the membrane, Na+ flows
quickly into the cell. This is an example of:
A. osmosis.
B. exocytosis.
C. facilitated diffusion.
D. active transport pumps. -CORRECT ANSWER C. facilitated diffusion.
A molecule of glucose in which each excited electron is tagged enters aerobic cellular
respiration in a human and each electron is tracked. Upon completion of pyruvate
oxidation, where would you expect to find the tagged electrons?
A. All electrons are in acetyl CoA
B. Some have been breathed out and the rest are in acetyl CoA
C. Some have been breathed out and the rest are in PGA
D. Some are in acetyl CoA and some are in NADH -CORRECT ANSWER D. Some are
in acetyl CoA and some are in NADH
Hypothesize the result if you competitively inhibited the enzyme that catalyzes the
formation of Coenzyme A?
A. No ATP would be generated during glycolysis
B. The Calvin cycle would no longer use CO2.
C. ATP synthase would fail to transfer electrons to CO2.
D. The Citric acid cycle would stop. -CORRECT ANSWER D. The Citric acid cycle
would stop.
Compare and contrast short-term and long-term memory. Which of the following are
TRUE about short-term memory?
I. Information is lost if it is not used.
II. Activated when information needs to be retained.
III. Encoded into long-term memory if used often.
, IV. Has unlimited capacity
A. I, III, and IV
B. II and III
C. I and III
D. I, II, and IV -CORRECT ANSWER C. I and III
Identify which of the following is an example of emergence.
A. An organism has properties absent from the individual atoms that comprise it.
B. A liver cell can be broken down into organelles and various molecules.
C. A toaster can be broken down into small mechanical parts.
D. The mass of the atomic nucleus is the sum of the masses of the protons and
neutrons. -CORRECT ANSWER A. An organism has properties absent from the
individual atoms that comprise it.
The fluid mosaic model readily permits which type of movement of proteins within a
membrane?
I. Lateral movement within the membrane
II. Flipping orientation within the membrane
III. Moving from peripheral to integral
A. I and II
B. II and III
C. I only
D. I, II, and III -CORRECT ANSWER C. I only
Compare and contrast photosynthesis and cellular respiration. Which of the following
statement(s) is/are TRUE for BOTH?
I. Water is reduced, and organic carbon is oxidized.
II. They are anabolic reactions.
III. On net, ATP is produced.
IV. Chemiosmosis occurs.
V. Occur in eukaryotes as a result of endosymbiosis.
A. II and III
B. I and II
C. I, II, and III
D. IV and V -CORRECT ANSWER D. IV and V
Identify which of the following cell structure(s) are theorized to have originated through
endosymbiosis?
I. Endoplasmic Reticulum
II. Nucleus
III. Mitochondria
IV. Chloroplast