BS 161 exam 3 clicker questions with verified answers
____ block DNA synthesis by DNA polymerase Ans✓✓✓ Substitution of ATP's 3'
hydroxyl group with another chemical group
48
Cholera toxin permanently activates the
G-protein. This causes _____ in cellular
cAMP levels leading to _____of protein
kinase A (PKA) Ans✓✓✓ an increase; activation
A photosystem channels the excitation energy
gathered by absorption of light by any one of the
pigment molecules to a specific reaction center
chlorophyll, which transfers energy to Ans✓✓✓ the primary electron acceptor.
A photosystem channels the excitation energy gathered by absorption of light to
chlorophyll A, which then passes the energy to: Ans✓✓✓ the primary electron
acceptor.
Based on the figure, which type of molecular interaction is not involved in cAMP
binding to PKA? Ans✓✓✓ Covalent
DNA ligase: Ans✓✓✓ joins Okazaki fragments
DNA polymerase's primary function is to add new nucleotides to the 3'-end of a
growing chain. What is its second function? Ans✓✓✓ DNA proofreading
, DNA polymerases are amazingly accurate.
After error correction, there is
~ 1 error / 3 x 10^9 base pairs.
The human genome contains 6x10^9 base pairs.
How many errors approximately occur every time a cell replicates? Ans✓✓✓ 2
6 x 10^9 divided by 3 x 10^9 = 2
Do the results of the experiment support the hypothesis that this is a functional
hormone receptor? Ans✓✓✓ yes
Does the fluorescent GFP tag alone localize to the nucleus in response to
hormone? Ans✓✓✓ no
Does the phosphorylation of glycogen phosphorylase,
the enzyme that converts glycogen to glucose, activate
or inactivate the enzyme? Ans✓✓✓ activate
During DNA replication, which bond is broken to separate the DNA strands?
(slide 21) Ans✓✓✓ c. hydrogen bonds
Estrogen and testosterone are small, hydrophobic signaling molecules. They
Ans✓✓✓ can cross the plasma membrane by simple
diffusion
____ block DNA synthesis by DNA polymerase Ans✓✓✓ Substitution of ATP's 3'
hydroxyl group with another chemical group
48
Cholera toxin permanently activates the
G-protein. This causes _____ in cellular
cAMP levels leading to _____of protein
kinase A (PKA) Ans✓✓✓ an increase; activation
A photosystem channels the excitation energy
gathered by absorption of light by any one of the
pigment molecules to a specific reaction center
chlorophyll, which transfers energy to Ans✓✓✓ the primary electron acceptor.
A photosystem channels the excitation energy gathered by absorption of light to
chlorophyll A, which then passes the energy to: Ans✓✓✓ the primary electron
acceptor.
Based on the figure, which type of molecular interaction is not involved in cAMP
binding to PKA? Ans✓✓✓ Covalent
DNA ligase: Ans✓✓✓ joins Okazaki fragments
DNA polymerase's primary function is to add new nucleotides to the 3'-end of a
growing chain. What is its second function? Ans✓✓✓ DNA proofreading
, DNA polymerases are amazingly accurate.
After error correction, there is
~ 1 error / 3 x 10^9 base pairs.
The human genome contains 6x10^9 base pairs.
How many errors approximately occur every time a cell replicates? Ans✓✓✓ 2
6 x 10^9 divided by 3 x 10^9 = 2
Do the results of the experiment support the hypothesis that this is a functional
hormone receptor? Ans✓✓✓ yes
Does the fluorescent GFP tag alone localize to the nucleus in response to
hormone? Ans✓✓✓ no
Does the phosphorylation of glycogen phosphorylase,
the enzyme that converts glycogen to glucose, activate
or inactivate the enzyme? Ans✓✓✓ activate
During DNA replication, which bond is broken to separate the DNA strands?
(slide 21) Ans✓✓✓ c. hydrogen bonds
Estrogen and testosterone are small, hydrophobic signaling molecules. They
Ans✓✓✓ can cross the plasma membrane by simple
diffusion
