Ch 6/14 additional questions Flashcards
energy is stored long term in the bonds of __ and short term to perform work in __
glucose, ATP
DNA replication involves unwinding two strands of parent DNA, copying each strand to synthesize complementary strands, and releasing the parent and daughter DNA. Which of the following accurately describes this process?
anabolic process
Endergonic reactions have a __ ∆G and exergonic reactions have a __ ∆G.
positive, negative
Endergonic reactions __ energy and exergonic reactions __ energy.
consume, release
What is the best way to judge the relative activation energies between two given chemical reactions?
compare their reaction rates
The energy released by the hydrolysis of ATP is____
providing energy to coupled reactions
In eukaryotes, what is the DNA wrapped around?
histones
If a cell needs to correct a mistake, how does it know which side of the DNA is the original?
The parent group is marked with a methyl group
DNA replication is the process of…
copying DNA to prepare for division
An example of an endergonic reaction would be…
anabolism
If feedback inhibition turned off this metabolic pathway, where would the inhibitor bind? A->B->C->D
the enzyme between A and B
As temperature rises just a little past optimum, what happens to enzymic activity?
enzyme will start producing less product
What causes DNA replication to have leading and lagging strands?
DNA polymerase can only work in one direction
How many enzymes do we expect in this metabolic process? A->B->C->D
3
The first law of thermodynamics predicts what?
There is a limited amount of energy in the universe
If swapping a nucleotide causes a new amino acid to be inserted in the subsequent protein its called…
missense
If A->B->C->D represents a metabolic pathway, then A would be the…
substrate
In which direction does DNA replication take place?
5’ to 3’
If the sequence of the 5’-3’ strand is AATGCTAC, then the complementary sequence has the following sequence:
3’-TTACGATG-5’
The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the basis of the finding that:
radioactive phosphorus were found in the pellet
Meselson and Stahl’s experiments proved that DNA replicates by which mode?
semi-conservatively
Which of the following components is not involved during the formation of the replication fork?
single-strand binding proteins
helicase
origin of replication
ligase
ligase
Which of the following does the enzyme primase synthesize?
RNA primer
The ends of the linear chromosomes are maintained by..
telomerase
The initial mechanism for repairing nucleotide errors in DNA is…
DNA pol proofreading
