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.   molecular weight of the solute
B.   diffusion gradient
C.   lipid solubility
D.   temperature
E.   temperature, diffusion gradient, lipid solubility and 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.   attachment of an enzyme
B.   attachment of potassium ions
C.   release of potassium ions
D.   attachment of phosphate (from the breakdown of ATP)
E.   release of sodium ions
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.   the adjacent nucleic acids on the ends of the t-RNA bond
B.   matching anticodon of t-RNA attaches to the first codon of m-RNA
C.   first t-RNA detaches from the ribosome
D.   matching anticodon of another t-RNA attaches to the next codon
E.   a large ribosomal subunit joins the complex
Question #7
The two pyruvate molecules produced in glycolysis each undergo decarboxylation, resulting in the formation of two molecules of CO2.
A.   TRUE
B.   FALSE
Question #8
The two acetyl coenzyme -A molecules that enters the Krebs cycle produces which of the following products?
A.   2 FADH2 and 2 ATP
B.   6 NADH and 2 ATP
C.   4 CO2, 6 NADH, 2 FADH2 and 2 ATP
D.   4 CO2
Question #9
In the electron transport chain, ATP is formed when H+ is pumped from the matrix into the intermembrane space.
A.   FALSE
B.   TRUE
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.   at the origin of replication, helicase unwinds the helix and separates the bases
B.   the (Okazaki) fragments are then linked together by DNA ligase
C.   on the other side, DNA polymerase attaches complementary bases in short segments as it moves toward the replication fork forming the lagging strand
D.   DNA polymerase , moving toward the replication fork, attaches complementary bases to the template strand continuously to form the leading strand
E.   the point of separation is called the replication fork
Question #11
Which of the following is true of glycolysis?
A.   ATP is formed by oxidative phosphorylation
B.   glucose is decarboxylated producing 4 molecules of CO2
C.   glucose is converted into two molecules of pyruvate
D.   occurs within the mitochondria
E.   there is a net production of 4 molecules of ATP

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