Exam 1 quiz show Flashcards
The transmission of characteristics from parent to offspring by means of genes is
A.Transcription
B.Translation
C.Heredity
D.Horizontal Gene Transfer
E.Chromosomal Folding
Heredity
Griffith’s experiments described
A. One gene – one enzyme hypothesis
B. Transformation of Streptococcus pneumoniae.
C. the double helix as a model for the structure of DNA.
D. DNA is the genetic material of bacteriophage T2.
E. Genes being on chromosomes
Transformation of Streptococcus pneumoniae.
Who observed that chromosomes in cells behave in ways parallel to Mendel’s characters during meiosis and proposed a chromosomal basis for heredity?
A.Walter S. Sutton and Theodore Boveri
B.Erwin Chargaff
C.Avery, MacLeod, and McCarty
D.Marice Wilkins and Rosalind Franklin
Walter S. Sutton and Theodore
In the 1950s, Hershey and Chase conducted a now famous experiment to determine whether DNA or protein carried the hereditary information in bacteriophage T2. What method did they use to selectively label the DNA and protein components of bacteriophage T2?
A.35S to label the DNA and 32P to label the protein
B. 35S to label the protein and 32P to label the DNA
C. 35P to label the protein and 32S to label the DNA
D. none of the above
35S to label the protein and 32P to label the DNA
Each chromosome is composed of
_______ molecule(s) of DNA, and genes are sequences of ________.
A.Many; DNA
B.A Single; DNA
C.Many; RNA
D.A Single; RNA
E.Many; amino acids
BACK TO GAME
ANSWER
A Single; DNA
Which of the following is NOT part of a
nucleotide
A.Nitrogenous, heterocyclic bases
B.Deoxyribose sugars
C.Ribose sugars
D.Phosphate
E.Each of the above could be part of a
nucleotide
Each of the above could be part of a
nucleotide
Which DNA base pairing is represented?
A.A-T
B.T-A
C.G-C
D.C-G
T-A
Which of the following did Watson and Crick know
when they were trying to determine the structure
of DNA?
A. The number of purines is always larger than
the number of pyrimidines.
B. The number of purines is always the same as
the number of pyrimidines.
C. The number of cytosines is always the same
as the number of adenines.
D. The number of guanines is always the same
as the number of thymines
The number of purines is always the same as
the number of pyrimidines.
The abbreviation dNTP stands for
A. nucleoside 5′-triphosphate.
B. nucleoside 3′-triphosphate.
C. deoxynucleoside 5′-triphosphate.
D. deoxynucleoside 3′-triphosphate.
E. ribonucleoside 4’-tetraphosphate
deoxynucleoside 5′-triphosphate.
You determine that a sequence of DNA contains a set of tandem repeats. What unusual DNA secondary structure would this
sequence be most likely to form?
A. cruciform
B. triple helix
C. slipped structure
D. tandem helix
slipped structure
Hairpin loops, base-paired stems, and bulges make up what part of RNA’s structure?
A. primary
B. secondary
C. tertiary
D. quaternary
secondary
Base-paired stems in RNA with Watson-Crick
base pairing
A. form a B-type double helix
B. form a Z-type double helix
C. form an A-type double helix
D. do not form a double helix
form an A-type double helix
A GU wobble is an example of
A. a noncanonical base pair
B. a base triple
C. a Watson-Crick base pair
D. a modified base
a noncanonical base pair
There is a tremendous versatility of functional RNA
products involved in a wide range of cellular processes.
One of the key contributing factors to this versatility is
A. the ability of RNA to cleave phosphodiester bonds in
other nucleic acids
B. the ability of RNA to be copied into DNA
C. the ability of RNA to form unique 3D structures that act
similarly to proteins
D. the ability of RNA to serve as a messenger during
protein synthesis
the ability of RNA to form unique 3D structures that act
similarly to proteins
Subviral RNA particles such as viroids and
satellite RNAs differ from viruses in that
A. subviral RNA particles usually do not encode proteins
B. subviral RNA particles can only infect plant cells
C. subviral RNA particles usually do not cause disease
D. the infectious form of subviral RNA
particles are encased by proteins
subviral RNA particles usually do not
encode proteins
The naturally occurring form of amino acid in
proteins
A.L-amino acids
B.D-amino acids
C.Both L and D amino acids occur at equal proportions
D.Trick question, there is only 1 form of amino acid
L-amino acids
Some proteins have α helices, some have β sheets,
and still others have a combination of both. What
makes it possible for proteins to have these common
structural elements?
A.specific amino acid sequences
B.side-chain interactions
C.the hydrophobic-core interactions
D.hydrogen bonds along the protein backbone
hydrogen bonds along the protein backbone
When a protein is composed of more than one polypeptide chain, the arrangement of the chains is called the ____________ structure.
A. primary
B. secondary
C. tertiary
D. quaternary
quaternary
An enzyme that catalyzes phosphorylation of a
substrate is called
A. a kinase.
B. a transferase.
C. a phosphoprotein.
D. a glycoprotein
a kinase.
When double stranded DNA is heated to near boiling temperatures, it is denatured. When the temperature is reduced the single stranded DNA molecules reanneal. This phenomenon is a result of:
A.base pairing within DNA
B.semiconservative replication
C.3’ hydroxyl group located on the ribose ring of
DNA
D.DNA major and minor grooves
E.none of the above
base pairing within DNA
If the helix of a piece of double stranded DNA was less tightly wound, which of the following would most likely be introduced into the molecule?
A.positive supercoiling
B.negative supercoiling
C.Hoogsteen base pairing
D.a minor groove
E.a triple helix
negative supercoiling
Which of the following molecular interactions involved in protein tertiary structure is the strongest?
A.hydrogen bonds
B.disulfide bridge
C.Van der Waal’s interaction
D.ionic bond
E.none of the above
disulfide bridge
Which statement about the genetic code is NOT correct?
A.The sense strand of DNA serves as the template for RNA synthesis.
B.A RNA sequence is read in triplets.
C.A particular amino acid may be coded for by more than one codon.
D.Non-Watson-Crick base pairing can occur at the third position of codons and anticodons
The sense strand of DNA serves as the template for RNA synthesis.
A new amino acid is discovered! Its R-group contains only carbon and hydrogen atoms. Predict the behavior of this amino acid.
A. Its R-group is positively charged at
physiological pH
B. It is polar
C. It is hydrophilic
D. It is hydrophobic
It is hydrophobic
You determine that a protein has an attached polyubiquitin chain. It is likely that this protein will be
A. targeted to the lysosome for degradation.
B. targeted to the 26S proteosome for degradation.
C. included in insoluble toxic deposits known as amyloids fibers.
D. degraded by E1, E2, and E3 enzymes.
targeted to the 26S proteosome for degradation.
