WorksheetsAP Bio Chapter 17
Total questions: 19
Worksheet time: 19mins
Which of the following terms does not directly pertain to translation?
anticodon
tRNA
DNA
polypeptide
rRNA
The template strand of a given gene includes the sequence 3′-GCCACGTATCA-5′. What is the sequence of the nontemplate strand?
3′-CGGTGCATAGT-5′
5′-CGGTGCATAGT-3'
5′-CGGUGCAUAGU-3'
3′-CGGUGCAUAGU-5'
Which of the following is the best example of gene expression?
A frog adapts to variation in its environmental temperature
Mouse fur color results from pigment formed by gene-encoded enzymes
DNA is replicated during the S phase of the cell cycle
The percent of A versus a alleles in a population is altered by natural selection
Mutation alters the sequence of a region of DNA
In the transcription process shown here, in which process order (1, 2, or 3) does the RNA polymerase bind to the promoter, in which is the RNA transcript released, and in which is the RNA transcript extended?
1, 2, 3
2, 3, 1
3, 2, 1
1, 3, 2
Which of the following components does not form part of the transcription initiation complex at a eukaryotic promoter?
TATA box
start point
transfer RNA
transcription factors
RNA polymerase
Which of the following is a modification made to eukaryotic mRNA before it is exported to the cytosol? (Select all that apply)
The 5′ end is capped
A poly-A tail is added to the 3′ end
Introns are removed
Exons are joined together
Small ribosomal subunit binds
Which of the following statements comparing prokaryotic and eukaryotic transcription is not true?
Part of the RNA polymerase specifically recognizes and binds to the promoter in bacteria; in eukaryotes, transcription factors mediate the binding of polymerase
The RNA transcript is immediately usable as mRNA;
in eukaryotes, the RNA transcript is processed
RNA polymerase requires a primer in bacteria; in eukaryotes, it does not
Eukaryotic transcription has a polyadenylation signal sequence; in prokaryotes, a transcription terminator causes the polymerase to detach and release the transcript
Which of the following is incorrectly identified in this illustration of a tRNA?
A: 5′ and 3′ ends
B: hydrogen bond
C: amino acid attachment site
D: anticodon loop
Aminoacyl-tRNA synthetase is an enzyme whose function is to _____.
link a tRNA to its corresponding amino acid
remove introns from a pre-RNA transcript
cause the RNA polymerase to detach from the DNA
join together RNA nucleotides complementary to the DNA template strand
The nontemplate strand of a portion of a gene reads
5′-TTCACTGGTTCA. What is the sequence of the resulting transcript for this portion?
5′-AAGUGACCAAGU
5′-UGAACCAGUGAA
5′-UUCACUGGUUCA
5′-ACUUGGUCACTT
What kind of molecules can be transcription factors?
DNA and RNA
RNA and proteins
proteins
lipids
lipids and carbohydrates
What is the 5′ → 3′ sequence on the anticodon of the methionine (Trp) tRNA?
UGG
GGU
CCA
ACC
In a long, random sequence of A, C, G, or U, how often should a stop codon appear?
almost never
1/3
1/64
3/64
During a normal translation cycle, where would you expect to find a tRNA attached to a single amino acid?
E site
P site
A site
alternating between tRNAs attached to the P site and the A site
In which group of organisms would you expect to see decoupled transcription and translation? (Select all that apply)
Bacteria
Archaea
Plants
Animals
Fungi
In which group of organisms would you expect to see polyribosomes? (Select all that appy)
Bacteria
Archaea
Plants
Animals
Fungi
Which of the following is not a normal feature of prokaryotic mRNA?
5' end
start codon
stop codon
3' end
poly-A tail
Which of the following types of mutations can result in a frameshift?
nucleotide-pair substitution in a coding region
nucleotide-pair substitution in a non-coding region
1 nucleotide-pair insertion in a coding region
1 nucleotide-pair insertion into a non-coding region
3 nucleotide-pair insertion into a coding region
When a mutation caused by a nucleotide-pair insertion occurs in a protein-coding region, which of the following types of mutations cannot occur?
silent
frameshift
missense
nonsense
none of the options
