WorksheetsDNA So Far
Total questions: 21
Worksheet time: 6mins
Name
Class
Date
1.
Look at the DNA sequence below.
GAA TTC GCA
What do the G and A represent in the DNA sequence?
GAA TTC GCA
What do the G and A represent in the DNA sequence?
a)
sugars
b)
phosphates
c)
amino acids
d)
nitrogen bases
2.
What molecules do both DNA and RNA contain?
a)
uracil
b)
thymine
c)
nucleotides
d)
deoxyribose
3.
Which of the following is the template for the production of RNA within a cell?
a)
DNA
b)
ATP
c)
protein
d)
carbohydrate
4.
The genetic material of an organism is composed of ____________.
a)
lipids
b)
proteins
c)
deoxyribonucleic acids
d)
complex carbohydrates
5.
Which of the following statements best describes a DNA molecule?
a)
It is a double helix.
b)
It contains the sugar ribose.
c)
It is composed of amino acids.
d)
It contains the nitrogenous base uracil.
6.
This illustration is a model of _____.
a)
RNA
b)
DNA
c)
a lipid
d)
a protein
7.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
fatty acids
c)
nucleotides
d)
polysaccharides
8.
The process by which a DNA molecule is copied is called __________.
a)
binary fission
b)
mitosis
c)
replication
d)
translation
9.
Which of the following best describes how DNA and RNA are similar?
a)
They both contain the nitrogen bases thymine and adenine.
b)
They both are formed in a double helix structure.
c)
They both are composed of five different nucleotides.
d)
They both contain the nitrogen bases cytosine and guanine.
10.
In a molecule of double stranded DNA, the amount of adenine present is always equal to the amount of______.
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
11.
Which sequence of DNA bases would pair with the ones shown in the partial strand below?
ATG TGA CAG
ATG TGA CAG
a)
ATG TGA CAG
b)
ATG ACT GTC
c)
TAC ACT GTC
d)
TIC TAC TOE
12.
What is a polypeptide?
a)
A long chain of amino acids.
b)
3 nitrogenous bases.
c)
It makes up the tissues in organs.
d)
A nonfunctional group in a molecule.
13.
The process of making RNA from DNA is called ___.
a)
Translation
b)
Transcription
c)
DNA decoding
d)
Togetherase
14.
DNA instructions are transcribed into ____.
a)
tRNA
b)
rRNA
c)
mRNA
d)
lRNA
15.
Sources of variation in the genetic code include....
a)
point mutation
b)
insertion
c)
deletion
d)
all of these
16.
There are ___ nitrogen bases in a codon.
a)
2
b)
3
c)
4
d)
no
17.
How many codons are needed to make 3 amino acids?
a)
2
b)
3
c)
6
d)
9
18.
This is what type of RNA?
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA polymerase
19.
This is what type of RNA?
a)
rRNA
b)
tRNA
c)
mRNA
d)
protein
20.
During transcription, an RNA molecule is formed ____________.
a)
that is complementary to both strands of DNA.
b)
that is complimentary to neither strand of DNA.
c)
that is double stranded.
d)
inside of the nucleus.
21.
The nitrogen bases in DNA are held together by ___.
a)
hydrogen bonds.
b)
methylhydro bonds
c)
codons
d)
a triplet
100 %
