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WorksheetsDNA - The Code of Life
Total questions: 32
Worksheet time: 20mins
Name
Class
Date
1.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
2.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
3.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
4.
What are the 4 nitrogen bases?
a)
adenine, thymine, cytoplasm, and guanine
b)
adenine, thymine cytosine, and guanine
c)
adenine, thymine, cytosine, and gylcerol
d)
adenine, thymine, cytosine, and glucose
5.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
6.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
deoxyribose and the nucleus
d)
deoxyribose and phosphate
7.
When an extra base is inserted into the DNA sequence of a gene, the protein doesn't work. Which explains why?
a)
the base increases rate of translation
b)
the base causes DNA to be transcribed in opposite direction
c)
the inserted base causes the codons in the sequence to be incorrect for the desired protein
d)
the base signals enzymes to translate DNA rather than RNA
8.
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
9.
Carries the genetic code to the ribosome
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
10.
Amino acids are joined together in order to form
a)
DNA
b)
ribosomes
c)
proteins
d)
RNA
11.
Any change in the sequence of DNA is...
a)
transgenic shift
b)
Single Genotype
c)
Monohybrid Trait
d)
Mutation
12.
The process by which a DNA molecule is copied is called _____.
a)
binary fission
b)
mitosis
c)
replication
d)
translation
13.
What is the name of the shape of DNA?
a)
Single Helix
b)
Double Helix
c)
Double Stranded
d)
Semiconservative
14.
What part of protein synthesis does this diagram represent?
a)
mRNA
b)
tRNA
c)
rRNA
d)
RNA
15.
What is the function of transcription?
a)
To make a copy of mRNA that can take the instructions of DNA to the ribosome
b)
To make a new copy of DNA for a new cell that will be produced during mitosis
c)
To join together amino acids at the ribosome to make proteins
d)
To divide germ cells into four haploid cells for reprodcution
16.
One difference between DNA and RNA is that RNA....
a)
is double stranded
b)
contains the base Thymine
c)
contains the base Uracil
d)
contained the base Guanine
17.
This cannot leave the nucleus
a)
DNA
b)
RNA
c)
Both
18.
This nucleic acid is single stranded
a)
DNA
b)
RNA
c)
Both
19.
Contains the bases adenine, uracil, cytosine and guanine
a)
DNA
b)
RNA
c)
Both
20.
Ribose is sugar present in the nucleotide
a)
DNA
b)
RNA
c)
Both
21.
Carries the genetic code to the ribosome
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
22.
The molecule that transports the amino acid to the ribosome is called the
a)
DNA
b)
mRNA
c)
tRNA
d)
rRNA
23.
The codon read using the genetic code to determine the amino acid is found in
a)
DNA
b)
mRNA
c)
tRNA
d)
rRNA
24.
Carries the genetic code to the ribosome
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
25.
Brings the amino acids to the ribosome
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
26.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
27.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
28.
DNA sequence is ACAGTGC. How would this be coded on mRNA?
a)
TGTCACG
b)
UGUCACG
c)
GUGACAU
d)
CACUGUA
29.
What nitrogen base is in DNA but NOT RNA?
a)
uracil
b)
thymine
c)
guanine
d)
adenine
30.
What is the function of mRNA?
a)
provide energy for the duplication of cells
b)
stores food material for keeping cells alive
c)
preventing mutations
d)
carrying the gentic message
31.
Where are the proteins made?
a)
DNA
b)
nucleus
c)
ribosome
d)
mitochondria
32.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
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