WorksheetsRNA
Total questions: 16
Worksheet time: 11mins
Name
Class
Date
1.
How does RNA differ from DNA?
a)
RNA contains uracil and deoxyribose
b)
RNA contains ribose and thymine
c)
RNA contains uracil and ribose
d)
RNA contains adenine and ribose
2.
How would the DNA sequence GCTATA be transcribed to mRNA?
a)
GCUAUA
b)
CGATAT
c)
CGAUAU
d)
GCUTUT
3.
In eukaryotes, functional messenger RNA molecules are made from
a)
exons spliced together after introns are removed
b)
introns spliced together after eons are removed
c)
exons spliced together with introns
d)
long pieces of RNA shortened by the Dicer enzyme
4.
Promoters are
a)
genes that code for individual proteins
b)
proteins that bind with DNA and prevent transcription
c)
DNA sequences near operons that regulate transcription
d)
small molecules that bind with repressor proteins
5.
The process by which the genetic code of DNA is copied into a strand of RNA is called
a)
translation
b)
transcription
c)
transformation
d)
replication
6.
Which of the following describes RNA?
a)
RNA is usually double-stranded and contains the base thymine
b)
RNA is usually single-stranded and contains the base uracil
c)
RNA is longer than DNA and uses five bases to encode information
d)
RNA is made in the nucleus of eukaryotic cells and stays there to carry out its functions
7.
In messenger RNA, each codon specifies a particular
a)
nucleotide
b)
enzyme
c)
amino acid
d)
promoter
8.
The number of codons in the genetic code is
a)
3
b)
4
c)
20
d)
64
9.
Which of the following statements about the genetic code is true?
a)
A codon can specify more than one amino acid
b)
Every codon specifies a different amino acid
c)
Some codons specify the same amino acid
d)
Some codons have no function at all
10.
The process of making proteins on the ribosome based on instructions from messenger RNA is called
a)
transcription
b)
transformation
c)
translation
d)
molecular biology
11.
Changes is DNA sequences that affect genetic information are known as
a)
replications
b)
mutations
c)
transformations
d)
translations
12.
A single-base mutation in a messenger RNA molecule could transcribe the DNA sequence CAGTAT into
a)
GTCATA
b)
GUCAUA
c)
GTCUTU
d)
GUAAUA
13.
A substance that can cause a change in the DNA code of an organism is called a
a)
toxin
b)
mutagen
c)
nitrogenous base
d)
nucleotide
14.
An expressed gene
a)
functions as a promoter
b)
is transcribed into RNA
c)
codes for just one amino acid
d)
is made of mRNA
15.
A group of genes that are regulated together is called a(n)
a)
promoter
b)
operon
c)
intron
d)
allele
16.
Blocking gene expression in eukaryotes with microRNA strands is called RNA
a)
transcription
b)
translation
c)
interference
d)
digestion
100 %
