Download Practice exam #1 review

2.
The 4 steps of cellular respiration, in order are:
a.
b.
c.
d.
3.
Kreb’s Cycle, Transition Reactions, Glycolysis, Respiratory Chain
Respiratory Chain, Kreb’s Cycle, Transition Reactions, Glycolysis
Glycolysis, Transition Reactions, Kreb’s Cycle, Respiratory Chain
Glycolysis, Kreb’s Cycle, Transition Reactions, Respiratory Chain
Glucose, a _______ Carbon sugar, breaks down into 2 __________ during glycolysis.
a.
b.
c.
d.
3, pyruvates
3, acetates
6, pyruvates
6, acetates
5. During cellular respiration _________ accumulate, against their concentration gradient, in the
intermembrane space of the mitochondria.
a. electrons
b. hydrogen ions
c. proteins
d. oxygen
2. In plant cells, the cell membrane can shrink while the cell wall remains in place, this shows:
a. plasmolysis
b. isotonic solution
c. hypotonic solution
4. Cotransport is an example of:
a. active transport
b. passive transport
c. facilitated diffusion
6. Which answer is not a function of proteins?
a. send messages through the blood
b. engulf other cells
c. carry molecules from place to place
d. change the rate of a chemical reaction
9. Which of the following is defined as having the same pH with small additions of acids or bases?
a. acids
b. polymers
c. bases
d. buffers
12. Which structure declares the order of the amino acids?
a. primary
b. secondary
c. tertiary
d. quaternary
15. The ________ of water gives rise to _______ bonds which allow for it to have many unique characteristics.
a. non-polarity, ionic
b. polarity, ionic
c. polarity, hydrogen
d. non-polarity, hydrogen
31. Active transport uses ________ to move molecules.
a. diffusion
b. energy
c. osmosis
34. Endosymbiosis is:
a. the cell at rest
b. the theory of how mitochondria and chloroplast became incorporated into eukaryotic cells
c. cellular excretion of a substance
d. intercellular junctions forming
3.
Carboxyl groups are
a. acidic, increase
b. acidic, decrease
c. basic, increase
d. basic, decrease
meaning they
the [H+] of a solution.
A plasma membrane has a high percentage of saturated fatty acids. It is expected that this membrane will be
____ viscous (solid) than a membrane composed of unsaturated fatty acids.
a. less
b. more
4. Which of the following is an example of Passive Transport?
a. Diffusion down an ion’s electrochemical gradient
b. Osmosis
c. Facilitated diffusion
d. All of the Above
e. A & B only
5. According to the fluid mosaic model of cellular membranes, which of the following is NOT true?
a. the phospholipid bilayer is in a liquid state
b. phopholipids can diffuse laterally
c. all proteins embedded in the membrane are held tightly in place
d. None of the above
1. The entire region between the nucleus and the plasma membrane is called the
a. nucleoid
b. intracellular matrix
c. plasma membrane
d. cytoplasm
e. cytosol
1) Alpha-helices have __________, _____________ bonds and beta-pleated sheets have ___________,
________ bonds.
a) Interstrand, hydrogen, intrastrand, covalent
b) Intrastrand, covalent, intrastrand, polar
c) Intrastrand, hydrogen, interstrand, hydrogen
d) intrastrand, hydrogen, interstrand, polar
e) Interstrand, hydrogen, intrastrand, disulfide
2) A label on a food package reads 0 grams of trans fat. Trans fat is
A)
B)
C)
D)
a constitutional isomer
a protein
a structural isomer
none of the above
1. An amino acid does NOT contain
a. a carboxyl group
b. an amino group
c. a hydrogen atom
d. a phosphate group
e. a side chain
1.
Choose the pair of terms that correctly completes this sentence: Polymerization-depolymerization
reactions require _______and _____, respectively.
a.
hydrolysis; condensation
b.
dehydration; hydrolysis
c.
catabolism; anabolism
d.
dehydration; phosphorylation
6.
If the concentration of K+ is higher inside a cell than outside the cell, transporting K+ out of the cell
will require which two of the following
a.
Active transport
b.
Facilitated diffusion
c.
Passive transport
d.
Gated channel proteins
7.
According to the fluid mosaic model of cellular membranes, which of the following is NOT true?
a.
the phospholipid bilayer is in a liquid state
b.
phopholipids can diffuse laterally
c.
proteins embedded in the membrane are held tightly in place
d.
None of the above
9.) Which of the following is the most likely movement for a plasma membrane protein?
A. ER Vesicles Golgi Lysosome Plasma Membrane
B. ER Vesicles Golgi Vesicles Plasma Membrane
C. Nucleus ER Golgi Vesicles Plasma Membrane
D. ER Golgi Lysosome Vesicles Plasma Membrane
E. Golgi Vesicles Lysosome Vesicles Plasma Membrane
11.) Which of the following processes includes all others?
A. osmosis
B. diffusion of glucose down its concentration gradient
C. facilitated diffusion
D. diffusion of an ion down its electrochemical gradient
E. passive transport
14.) An Enzyme speeds up an reaction by ___________
A. decreasing activation energy of a reaction.
B. increase the ΔG of a reaction
C. decrease the Δ G of a reaction
D. increasing the activation energy of the reaction
18.) What of the following is/ are the product(s) of the citric acid cyclea. CO2
b. NAPH and FAPH2
c. ATP
d. H2O
e. all the above
Modified True or False Write T or F at each question and if false correct then make it true.
1. ATP is an energy intermediate T F
2. ATP releases energy when the bond undergoes a dehydration reaction T F
3. Delta G is negative when the products have less free energy that the reactants T F
4. In the synthesis of ATP the products have less free energy that the reactants T F
5. When a reaction is spontaneous Delta G is negative T F
6. Kinetic energy is called Delta G T F
7. Oxidized NAD+ is highly energetic T F
8. Oxidizing NADH will use 3 ATP to complete the reaction T F
9. An enzyme releases free energy so a reaction can occur T F
10. An enzyme reduces free energy so a reaction occurs more quickly T F
11. Mitochondria doesn't have which of the following:
a. inner matrix b. adenosine triphosphate c. acetyl coA d. inner membrane e. guanine
12. Mitochondria doesn't do which of the following.
a. cellular respiration b. formation of energy intermediates c. breakdown of glucose d. glycolysis e. citric acid
cycle
13. Glycolysis requires CO2 T F
14. Glycolysis requires phosphorus T F
15. What are the products of glycolysis Check all that apply.
a. ATP b. ADP c. NADH d. NAD- e. pyruvate f. glucose g. fructose-1,6-bisphosphate h. acetyl co A I. Water
16. Electrons in the inner membrane of the mitochondria turn ATPsynthase T F
17. What is oxidative phosphorylation?
The production of ATP by E-transport, consuming oxygen in the process, and making ATP by putting
protons in the inner membrane space, leading to an electrochemical gradient that drives a rotary protein
machine called ATPsynthase.
Questions from the book publisher
Ions with a net negative charge are called _______, while ions with a net positive charge are called __________
a. electrons; protons
b. anions; cations
c. acids; bases
d. cation; anions
e. polar; nonpolar
The bonds created between monosaccharides to form polysaccharides are known as ________________ and
are formed by ________________.
a. hydrogen bonds; condensation reactions
b. glycosidic bonds; hydrolysis
c. hydrogen bonds; dehydration synthesis
d. glycosidic bonds; dehydration synthesis