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WorksheetsSTOGS DNA and protein synthesis
Total questions: 20
Worksheet time: 22mins
Name
Class
Date
1.
The central dogma of biology states that information flows in one direction from
a)
nuclei to RNA to cytoplasm
b)
ribosomes to proteins to DNA
c)
genes to nuclei to ribosomes
d)
DNA to RNA to proteins
2.
Choose the nucleotide sequence of the RNA strand that would be complementary to the following strand:
GTAGTCA
GTAGTCA
a)
UATUAGA
b)
ACGACTG
c)
CAUCAGU
d)
CATCAGT
3.
The main function of tRNA is to...
a)
carry a message that, when translated, forms proteins
b)
form a portion of ribosomes
c)
string together complementary RNA and DNA strands
d)
bring amino acids from the cytoplasm to the ribosomes
4.
What is the term for a three-nucleotide sequence that codes for an amino acid?
a)
base
b)
codon
c)
amine
d)
serine
5.
Which phrase best describes translation?
a)
converts mRNA into a polypeptide
b)
catalyzes bonds between amino acids
c)
produces RNA from DNA molecules
d)
recycles tRNA molecules for reuse
6.
Which of the following is the site of transcription?
a)
vacuole
b)
lysosome
c)
nucleus
d)
ribosome
7.
Which of the following is the site of translation?
a)
vacuole
b)
lysosome
c)
nucleus
d)
ribosome
8.
Which of the following is created in the nucleus and carries the genetic code to the cytoplasm?
a)
DNA
b)
tRNA
c)
mRNA
d)
rRNA
9.
What molecules do both DNA and RNA contain?
a)
uracil
b)
nucleotides
c)
thymine
d)
deoxyribose
10.
Which of the following best describes how DNA and RNA are similar?
a)
they both contain A and T
b)
They both have a double helix
c)
They are both composed of 5 different nucleotides
d)
they both have C and G
11.
The DNA sequence ATCAGCGCTGGC is part of a gene. how many amino acids are coded for by this message?
a)
4
b)
8
c)
12
d)
20
12.
The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?
a)
ribose sugar and base
b)
ribose sugar and phosphate group
c)
nitrogen base and deoxyribose sugar
d)
deoxyribose sugar and phosphate group
13.
Which choice describes DNA after replication has taken place?
a)
one molecule with two original strands and one molecule with two new strands
b)
two molecules, each with one original and one new strand
c)
two molecules, each with two new strands
d)
two molecules, each with two old strands
14.
A diagram of a cellular process is shown below. Which of the following identifies the process shown at point Z?
a)
Translation
b)
Translocation
c)
Replication
d)
Transcription
15.
A portion of mRNA is coded CUG. The corresponding DNA is coded
a)
GAC
b)
GTC
c)
CTG
d)
CAG
16.
A portion of DNA reads GAG. The corresponding mRNA would be
a)
GUG
b)
GTG
c)
CTC
d)
CUC
17.
DNA polymerase and RNA polymerase are similar in that they
a)
are both enzymes
b)
both are involved in making new polymers
c)
both can be found doing work in the cell nucleus
d)
all of these things are true
18.
The process shown in this image
a)
is called replication
b)
results in a new copy of the DNA
c)
does not happen during mitosis
d)
All of these apply
19.
A small section of RNA that transports amino acids
to the ribosome for synthesis into proteins.
a)
tRNA
b)
mRNA
c)
rRNA
d)
DNA
20.
The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
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