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WorksheetsDNA Structure & Protein Synthesis [Unit 7 Study Guide]
Total questions: 26
Worksheet time: 52mins
Name
Class
Date
1.
What are the three parts of a nucleotide?
a)
Sugar, phosphate group, nitrogen base
b)
Sugar, lipid, protein
c)
Phosphate, protein, nitrogen gas
d)
Water, sugar, base
2.
What is the job of DNA polymerase?
a)
Unzips DNA
b)
Builds new DNA strands
c)
Breaks down DNA
d)
Stores genetic code
3.
What is the job of helicase?
a)
Cuts RNA
b)
Copies proteins
c)
Unzips DNA strands
d)
Builds amino acids
4.
Why is DNA replication called semi-conservative?
a)
DNA is destroyed during copying
b)
Each new DNA has two old strands
c)
Each new DNA has one old and one new strand
d)
DNA changes completely after copying
5.
What is the purpose of histones?
a)
Repair damaged DNA
b)
Help DNA coil tightly
c)
Break down old DNA
d)
Turn DNA into proteins
6.
Why were Avery’s and Hershey & Chase’s experiments important?
a)
They showed proteins carry genetic info
b)
They proved DNA carries genetic info
c)
They found bacteria cause disease
d)
They discovered cells divide by mitosis
7.
What did Chargaff discover?
a)
A = G and T = C
b)
DNA is shaped like a double helix
c)
A = T and C = G
d)
RNA copies DNA exactly
8.
How did Franklin, Watson, and Crick contribute to DNA research?
a)
Discovered DNA replication
b)
Discovered mutations
c)
Discovered the shape of DNA
d)
Discovered RNA
9.
When cells copy DNA before division, the process is called:
a)
Translation
b)
Transcription
c)
Replication
d)
Mutation
10.
Where does DNA replication occur?
a)
Cytoplasm
b)
Nucleus
c)
Ribosome
d)
Cell membrane
11.
If the DNA strand is ATG CCG TAA, what is the complementary DNA strand?
a)
TAC GGC ATT
b)
UAC GGC AUU
c)
TAG GGC AAT
d)
AUG CCG UAA
12.
Which RNA carries amino acids?
a)
mRNA
b)
tRNA
c)
rRNA
d)
cRNA
13.
Which RNA is part of ribosomes?
a)
mRNA
b)
tRNA
c)
rRNA
d)
cRNA
14.
Which RNA copies the DNA code?
a)
mRNA
b)
tRNA
c)
rRNA
d)
cRNA
15.
What are three differences between DNA and RNA?
a)
DNA is single-stranded, uses uracil, and has ribose sugar
b)
RNA is double-stranded, uses thymine, and has deoxyribose sugar
c)
RNA is single-stranded, uses uracil, and has ribose sugar
d)
DNA is triple-stranded, uses uracil, and has ribose sugar
16.
What is it called when RNA is made from DNA?
a)
Translation
b)
Transcription
c)
Replication
d)
Mutation
17.
Where does transcription occur?
a)
Nucleus
b)
Ribosome
c)
Cytoplasm
d)
Mitochondria
18.
What is it called when a protein is made from mRNA?
a)
Replication
b)
Transcription
c)
Translation
d)
Mutation
19.
Where does translation happen?
a)
Nucleus
b)
Ribosome
c)
Golgi body
d)
Endoplasmic reticulum
20.
A triplet of mRNA nucleotides is called a:
a)
Codon
b)
Anticodon
c)
Intron
d)
Exon
21.
A triplet on tRNA is called a:
a)
Codon
b)
Anticodon
c)
Intron
d)
Exon
22.
What does tRNA carry?
a)
DNA and RNA
b)
Amino acid and codon
c)
Amino acid and anticodon
d)
Sugar and phosphate
23.
How do introns and exons differ?
a)
Exons are cut out; introns stay
b)
Introns are removed, exons stay
c)
Introns and exons are the same
d)
Exons become introns after transcription
24.
What type of mutation causes the most change to a protein?
a)
Point mutation
b)
Frameshift mutation
c)
Silent mutation
d)
Substitution mutation
25.
What type of mutation is shown on the following image?
a)
Deletion: a portion of a chromosome is deleted
b)
Duplication: a portion of a chromosome is repeated
c)
Inversion: a portion of a chromosome is flipped
d)
Translocation: a portion of one chromosome is added to a different chromosome
26.
What type of mutation is shown on the following image?
a)
Deletion: a portion of a chromosome is deleted
b)
Duplication: a portion of a chromosome is repeated
c)
Inversion: a portion of a chromosome is flipped
d)
Translocation: a portion of one chromosome is added to a different chromosome
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