Molecular Genetics Integrated Science Quiz
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What is this molecule? What does it do?
A. mRNA; carries the message from DNA to the ribosome
B. tRNA; transfers the amino acids to the polypeptide chain
C. rRNA; reads the message from the mRNA
What is translation?
A. decoding mRNA to make proteins
B. tRNA made from DNA
C. rRNA made from DNA
D. amino acids made from RNA
What is this molecule? What does it do?
A. mRNA; carries the message from DNA to the ribosome
B. tRNA; transfers the amino acids to the polypeptide chain
C. rRNA; reads the message from the mRNA
What is the shape of DNA?
A. double helix
B. single helix
C. triple helix
D. single stranded
What do the instructions in genes code for?
A. proteins
B. ribosomes
C. purines
D. pyrimidines
What structures make up a DNA nucleotide?
A. deoxyribose sugar, phosphate group, nitrogen base
B. ribose sugar, phosphate group, nitrogen base
C. glucose sugar, phosphate group, nitrogen base
D. cellulose sugar, phosphate group, nitrogen base
How many bases specify an amino acid?
A. 3
B. 2
C. 1
D. 6
DNA contains the sugar _________, RNA contains the sugar ____________.
A. deoxyribose, ribose
B. ribose, deoxyribose
C. thymine, uracil
D. uracil, thymine
True or False: DNA is double stranded and RNA is single stranded.
A. TRUE
B. FALSE
The mRNA codon UCU has the anti-codon _____.
A. AGA
B. UCU
C. TGT
D. UGU
Deoxyribose sugar + phosphate group + cytosine could be found in
A. DNA
B. RNA
Adenine pairs with thymine in DNA, but pairs with _________ in RNA.
A. uracil
B. thymine
C. cytosine
D. guanine
True or False: DNA has uracil and RNA has thymine.
A. FALSE
B. TRUE
What is a stop codon?
A. signals the end of a growing polypeptide chain
B. signals the start of a polypeptide chain
C. signals the mutation in a polypeptide chain
D. signals an amino acid in a polypeptide chain
What is transcription?
A. making of RNA off of DNA
B. making more DNA
C. making amino acids
D. making protein
During DNA replication, if a strand has bases TGGATC, what are the complimentary bases?
A. ACCTAG
B. TGGATC
C. ACCUAG
D. UCCTUG
What amino acid would GGA code for?
A. glycine
B. alanine
C. arginine
D. proline
True or False: DNA’s sugar is deoxyribose, and RNA has ribose
A. TRUE
B. FALSE
In DNA, percentages of A are the same as ___, and the percentages of C are the same as ___.
A. T, G
B. G, T
C. U, G
D. T, C
What is replication?
A. Copying DNA
B. Copying RNA
C. Copying Amino Acids
D. Making Proteins
DNA is found in the _________ in eukaryotes, and in the _________ in prokaryotes.
A. nucleus, cytoplasm
B. cytoplasm, nucleus
C. mitochondria, cytoplasm
D. nucleus, mitochondria
What is this molecule? What does it do?
A. mRNA; carries the message from DNA to ribosome
B. tRNA; transfers the amino acids to the polypeptide chain
C. rRNA; reads the message from the mRNA
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