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Biology 101 Exam 3 Questions and Answers Latest Update
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Biology 101 Exam 3 Questions and Answers Latest Update
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Biology 101 Exam 3 Questions andAnswers Latest Update
chromosomes consist of ______ & __________. - Answer-DNA & Protein
chromosomes replicate (prior / after) cell division. - Answer-prior
Does DNA vary among species? - Answer-Yes
Fredrick Griffith figured out the source of heredity by studying ___________. - Answer-
bacteria
Heat killed remains of the pathogenic strain were mixed with living cells of non-
pathogenic strain and some of the living cells became __________. - Answer-
pathogenic
One strain produced a heritable change in the other strain - Answer-Transforming
Principle
Transforming Principle was done by ___________ (last name). - Answer-Griffith
Avery, MacLeod and McCarty did an experiment where they remove the protein: Did the
transformation still occur? - Answer-Yes
Avery, MacLeod and McCarty did an experiment where they destroyed DNA: Did the
transformation still occur? - Answer-No
Avery, MacLeod and McCarty through experimentation realized that DNA was the
____________ ______________. - Answer-transformation material
A Virus that infects bacteria, by injecting RNA or DNA that become part of the bacteria's
DNA. - Answer-Bacteriophages
Alfred Hershey and Martha Chase stained the protein coat of the virus not found in
bacterium - thus making the new viral particles inside the cell (able to be found / not
able to be found). - Answer-not able to be found
Alfred Hershey and Martha Chase's second experiment was where they stained the
DNA of the virus in the bacterium - thus making the new viral particles inside the cell
(able to be found / not able to be found). - Answer-able to be found
Erwin Chargaff found that in nitrogenous bases the amount of A = ____, and the
amount of C = _____. - Answer-T G
, DNA is in the shape of a _______ ________. - Answer-Double Helix
DNA has a (uniform / un-uniform) diameter. - Answer-uniform
The backbones of DNA that are equidistant throughout the helix are made of ________
_______. - Answer-sugar phosphates
DNA is (parallel or anti-parallel)? - Answer-anti-parallel
Adenine pairs with - Answer-Thymine
Cytosine pairs with - Answer-Guanine
Pairing is called ___________ base pairing - Answer-complementary
DNA is : ______ helix, ______-handed, _____-parallel, has __________ base pairing. -
Answer-double, right, anti, complementary
Adenine pairs with Thymine by ___ (#) hydrogen bonds. - Answer-2
Cytosine pairs with Guanine by ____(#) hydrogen bonds. - Answer-3
Replication is explained by _______ pairing - Answer-base
each strand is a template for the other because of complementary base pairing - true or
false? - Answer-true
Semi-conservative replication is when: Hydrogen bonds are ________, strands _____-
wind and ________, new bases observe base pairing rules, result is ____ (#) identical
copies. - Answer-broken, un-wind and seperate, 2
In semiconservative replication says that each of the old strand makes a new half and
after one round of replication there is one old chain and one new chain. True or False? -
Answer-True
Strand unwinds/ opens and replication begins at an origin of replication. This is called: -
Answer-Initiation
New strands of DNA are synthesized by DNA polymerase. This is called: - Answer-
Elongation
Ending DNA replication, joining pieces and proofreading. This is called: - Answer-
Termination
What is the name of the main enzyme involved in replication? - Answer-DNA
Polymerase
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