NUCLEIC ACIDS Flashcards
DNA is primarily found in the:
A. Cytosol
B. Nucleus
C. Mitochondria
D. A and B
E. B and C
E. B and C
It is the entire genetic make up of an organism?
A. Mutation
B. Codon
C. Gene
D. Anti – codon
E. Mammals
C. Gene
An example of synthetic DNA:
A. Replicated DNA
B. GMO
C. Gene
D. Chromatin
E. Recombinant DNA
E. Recombinant DNA
The type of RNA which serves as template for the amino acid sequence being synthesized:
A. mRNA
B. tRNA
C. rRNA
D. ssDNA
E. dsDNA
A. mRNA
A genetic disease due to defective mechanisms for pyrimidine dimmers:
A. Phenylketonuria
B. Xeroderma Pigmentosum
C. Albinism
D. Ataxia telangiectasia
E. Ehler’s Danlos
B. Xeroderma Pigmentosum
Which of the following is a STOP Codon?
A. AUG
B. CGC
C. GGA
D. UGA
E. CCC
D. UGA
The following are the components of DNA nucleosides, except:
A. Phosphoric acid
B. Sugar
C. Adenine
D. Cytosine
E. Ribose
A. Phosphoric acid
Genetic information is stored and carried in all cells by:
A. ssDNA
B. dsDNA
C. dsRNA
D. sscDNA
E. mRNA
B. dsDNA
In the secondary structure of RNA:
A. Adenine will always pair with thymine
B. Cytosine will always pair with thymine
C. Cytosine will always pair with uracil
D. Adenine will always pair with uracil
D. Adenine will always pair with uracil
The type of RNA molecule that brings amino acids to the site of protein synthesis is:
A. rRNA
B. aRNA
C. mRNA
D. tRNA
E. dsRNA
D. tRNA
What is the anti – codon in tRNA that corresponds to the codon ACF in mRNA?
A. UGC
B. TGC
C. GCA
D. CGU
E. UGA
A. UGC
This type of mutation occurs when the codon containing the changed base may become a termination codon:
A. Nonsense mutation
B. Silent mutation
C. Misense mutation
D. None of these
A. Nonsense mutation
The result of a point mutation that occurs when UCA (coding for serine) is converted to UCU (also coding for serine) is called:
A. Nonsense mutation
B. Silent mutation
C. Misense mutation
D. None of these
B. Silent mutation
The most abundant and most common form of DNA:
A. A-DNA
B. Z-DNA
C. E-DNA
D. B-DNA
E. X-DNA
D. B-DNA
Central Dogma concept wherein the RNA molecule is used as template for the synthesis of DNA molecule:
A. Transcription
B. Translation
C. Mutation
D. Coding
A. Transcription
Which is not a product of hydrolysis of nucleotide?
A. N – base
B. Sugar
C. Fat
D. Phosphate
E. A, B, and D only
C. Fat
These are discontinuous stretches in which the lagging strand is initially synthesized during DNA replication:
A. Okazaki Fragment
B. Enhancer
C. Primer
D. Opener
E. DNA Ligase
A. Okazaki Fragment
The complementary strand of CGACCTTGATCGA:
A. TCGTTCCAGCTAG
B. GCTGGAACTAGCT
C. AGCAAGGTCGAAC
D. ATCAAGGTCGATC
B. GCTGGAACTAGCT
Which of the following is correct about the Watson-Crick model of DNA?
A. The backbone of each DNA strand is a repeating sugar-phosphate polymer
B. The strands of DNA are anti-parallel, spiraling around the helix axis in opposite directions
C. The sequences of bases in the two strands are determined by hydrogen bonding between adenine and thymine or guanine and cytosine
D. The sugar involved in the backbone structure is deoxyribose
E. All are correct features of DNA structure
E. All are correct features of DNA structure
This step repeats until reaching a stop codon:
A. Transcription
B. Elongation
C. Translation
D. Termination
B. Elongation
The steps of central states:
A. Replication, Translation, Transcription
B. Replication, Transcription, Transmission
C. Replication, Transcription, Translation
D. Transcription, Translation, Replication
C. Replication, Transcription, Translation
What is wobble?
A. The ability of certain anticodons to pair with codons that differ at the third base
B. An error in translation induced by streptomycin
C. A mechanism that allows for a peptide extension in the 50s sub-unit of the ribosome
D. Thermal motions leading to local denaturation of the DNA double helix
A. The ability of certain anticodons to pair with codons that differ at the third base
The process by which genetic information flows from RNA to protein is:
A. Mutation
B. Replication
C. Translation
D. Transcription
C. Translation
The nucleic acids, RNA and DNA plays an important role in the biosynthesis of proteins. This sugar is:
A. Glucose
B. Sucrose
C. Fructose
D. Ribose
E. Maltose
D. Ribose