Physiology V01 - Introduction to Human Physiology » Fall 2021 » Lecture Quiz 2

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Question #1
The diffusion rate is inversely proportional to which of the following?
A.   temperature
B.   diffusion gradient
C.   temperature, diffusion gradient, lipid solubility and molecular weight of the solute
D.   lipid solubility
E.   molecular weight of the solute
Question #2
A cell placed in a hypertonic solution will gain water.
A.   TRUE
B.   FALSE
Question #3
During primary active transport, what causes the pump protein to change shape after the attachment of the three sodium ions?
A.   release of potassium ions
B.   release of sodium ions
C.   attachment of phosphate (from the breakdown of ATP)
D.   attachment of potassium ions
E.   attachment of an enzyme
Question #4
During metaphase of mitosis, the centromeres split and the daughter chromosomes are pulled to opposite ends of the cell.
A.   TRUE
B.   FALSE
Question #5
During transcription, RNA polymerase facilitates the bonding of nucleotides to their corresponding bases along the template strand of DNA.
A.   FALSE
B.   TRUE
Question #6
Starting with the attachment of m-RNA to the small ribosome subunit, which step of translation is not correct?
A.   matching anticodon of another t-RNA attaches to the next codon
B.   matching anticodon of t-RNA attaches to the first codon of m-RNA
C.   a large ribosomal subunit joins the complex
D.   the adjacent nucleic acids on the ends of the t-RNA bond
E.   first t-RNA detaches from the ribosome
Question #7
The two pyruvate molecules produced in glycolysis each undergo decarboxylation, resulting in the formation of two molecules of CO2.
A.   FALSE
B.   TRUE
Question #8
The two acetyl coenzyme -A molecules that enters the Krebs cycle produces which of the following products?
A.   4 CO2
B.   6 NADH and 2 ATP
C.   2 FADH2 and 2 ATP
D.   4 CO2, 6 NADH, 2 FADH2 and 2 ATP
Question #9
In the electron transport chain, ATP is formed when H+ is pumped from the matrix into the intermembrane space.
A.   TRUE
B.   FALSE
Question #10
Which of the following steps of DNA replication is incorrect? Be careful with this question, there is only one word that makes the statement incorrect.
A.   the point of separation is called the replication fork
B.   DNA polymerase , moving toward the replication fork, attaches complementary bases to the template strand continuously to form the leading strand
C.   at the origin of replication, helicase unwinds the helix and separates the bases
D.   on the other side, DNA polymerase attaches complementary bases in short segments as it moves toward the replication fork forming the lagging strand
E.   the (Okazaki) fragments are then linked together by DNA ligase
Question #11
Which of the following is true of glycolysis?
A.   ATP is formed by oxidative phosphorylation
B.   glucose is converted into two molecules of pyruvate
C.   glucose is decarboxylated producing 4 molecules of CO2
D.   there is a net production of 4 molecules of ATP
E.   occurs within the mitochondria

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