BIOL 2070H QUIZZES AND ANSWERS VERIFIED 100%
GUARANTEED PASS
Fatty acids are composed of all the following elements except:
a. Glycerol
b. ATP
c. Hydrophilic Head
d. Hydrophobic Tails
e. Phosphate
b. ATP
Which of the following about the endoplasmic reticulum is false?
a. It can sequester calcium
b. It is always "studded" with ribosomes
c. It surrounds the nucleus
d. It extends out to the cell periphery
e. It is a dynamic structure that can change its conformation based on the needs
of the cell
b. It is always "studded" with ribosomes
Transmembrane pumps are found on the:
a. Cell membrane
b. Sarcoplasmic reticulum
c. Mitochondrion
,d. Lysosome
e. All of the above
e. All of the choices
Which of the following does not normally occur within lipid bilayers?
a. All of the choices occur
b. Flex
c. Lateral diffusion
d. Rotation
e. Flip-flop from one side to the other
e. Flip-flop from one side to the other
Which of the following statements is false?
a. DNA is composed of cytosine and thymine
b. Adenine and the guanine are found in RNA
c. DNA is composed of deoxyribose
d. Uracil is found in DNA
e. RNA is composed of ribose
d. Uracil is found in DNA
Which of the following does not affect membrane fluidity?
a. Length of the hydrocarbon tails
b. Amount of cholesterol in the membrane
c. Temperature
d. Saturation of the hydrocarbon tails in the membrane
e. All of the choices affect membrane fluidity
, e. All of the choices affect membrane fluidity
Which of the following statements is/are false?
a. The flow of material across cell membranes is unregulated
b. The cell membrane is semi-permeable
c.Active transport is the only mode of transport across the cell membrane
d. More than one of the choices are false
e. Ion concentrations are always greater outside the cell than inside
d. More than one of the choices are false
Carbohydrates are important for all the following except:
a. Energy storage
b. Protein secretion
c. Cell wall formation
d. Complex sugar formation
e. Cell recognition
b. Protein secretion
Which of the following statements is false?
a. The sodium-potassium pump in animal cells uses ATP
b. Transporters undergo conformational changes in response to ligand binding
c. Solutes can be transferred across the cell membrane by either active or
passive transport
d. Ions are able to cross the lipid bilayer by simple diffusion
e. Active transport requires ATP
d. Ions are able to cross the lipid bilayer by simple diffusion
GUARANTEED PASS
Fatty acids are composed of all the following elements except:
a. Glycerol
b. ATP
c. Hydrophilic Head
d. Hydrophobic Tails
e. Phosphate
b. ATP
Which of the following about the endoplasmic reticulum is false?
a. It can sequester calcium
b. It is always "studded" with ribosomes
c. It surrounds the nucleus
d. It extends out to the cell periphery
e. It is a dynamic structure that can change its conformation based on the needs
of the cell
b. It is always "studded" with ribosomes
Transmembrane pumps are found on the:
a. Cell membrane
b. Sarcoplasmic reticulum
c. Mitochondrion
,d. Lysosome
e. All of the above
e. All of the choices
Which of the following does not normally occur within lipid bilayers?
a. All of the choices occur
b. Flex
c. Lateral diffusion
d. Rotation
e. Flip-flop from one side to the other
e. Flip-flop from one side to the other
Which of the following statements is false?
a. DNA is composed of cytosine and thymine
b. Adenine and the guanine are found in RNA
c. DNA is composed of deoxyribose
d. Uracil is found in DNA
e. RNA is composed of ribose
d. Uracil is found in DNA
Which of the following does not affect membrane fluidity?
a. Length of the hydrocarbon tails
b. Amount of cholesterol in the membrane
c. Temperature
d. Saturation of the hydrocarbon tails in the membrane
e. All of the choices affect membrane fluidity
, e. All of the choices affect membrane fluidity
Which of the following statements is/are false?
a. The flow of material across cell membranes is unregulated
b. The cell membrane is semi-permeable
c.Active transport is the only mode of transport across the cell membrane
d. More than one of the choices are false
e. Ion concentrations are always greater outside the cell than inside
d. More than one of the choices are false
Carbohydrates are important for all the following except:
a. Energy storage
b. Protein secretion
c. Cell wall formation
d. Complex sugar formation
e. Cell recognition
b. Protein secretion
Which of the following statements is false?
a. The sodium-potassium pump in animal cells uses ATP
b. Transporters undergo conformational changes in response to ligand binding
c. Solutes can be transferred across the cell membrane by either active or
passive transport
d. Ions are able to cross the lipid bilayer by simple diffusion
e. Active transport requires ATP
d. Ions are able to cross the lipid bilayer by simple diffusion
