WorksheetsMrs. Bacon's Science--DNA:Lessons 1&2
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Chromosomes are made up mostly of ___________.
a)
nitrogen bases
b)
blood cells
c)
DNA and proteins
2.
In DNA, adenine always pairs with ___________.
a)
Thymnine
b)
Guanine
c)
Cytosine
d)
phosphate
3.
Each gene is located at a specific place on a(n) protein.
a)
True
b)
False
4.
A transfer RNA with the bases CGA will line up with a section
of messenger RNA with the bases CGU.
of messenger RNA with the bases CGU.
a)
True
b)
False
5.
The process of DNA copying itself begins when the two sides of
the DNA molecule unwind and separate
the DNA molecule unwind and separate
a)
True
b)
False
6.
The genetic code in DNA is copied and carried to the ribosomes by
_______________.
_______________.
a)
amino acids
b)
tRNA
c)
mRNA
d)
ribosomes
7.
Changes to the type or order of amino acids can result in a
different protein.
different protein.
a)
True
b)
False
8.
The sides of a DNA molecule are made up of sugar molecules alternating with ______molecules.
a)
Adenine
b)
Phosphate
c)
cytosine
d)
Thymine
9.
The sides of RNA and DNA molecules are made up of different ____________.
a)
sugars
b)
nitrogen bases
c)
ribonucleic acid
d)
Deoxyribose
10.
RNA is a(n) double strand.
a)
True
b)
False
11.
Each _______ on a chromosome contains the information to
code for one specific protein.
code for one specific protein.
a)
sugar
b)
chromosome
c)
gene
12.
Nitrogen bases are molecules that contain nitrogen and
other elements.
other elements.
a)
True
b)
False
13.
After an amino acid is added to a protein, the transfer RNA
picks up another amino acid.
picks up another amino acid.
a)
True
b)
False
14.
The process of making proteins is called protein ___________.
a)
replication
b)
synthesis
c)
spawning
15.
Proteins are made of smaller molecules called ______________.
a)
amino acids
b)
proteins
c)
cytoplasm
d)
chromosomes
16.
Amino acids are carried to a ribosome by messenger RNA.
a)
True
b)
False
17.
Each group of three DNA bases on a gene codes for a single
___________.
___________.
a)
protein
b)
amino acid
c)
DNA
d)
cytosine
18.
The genetic code is determined by the sizes of the
nitrogen bases.
nitrogen bases.
a)
True
b)
False
19.
In RNA, adenine pairs with ____________.
a)
RNA
b)
Sugar
c)
Uracil
d)
DNA
20.
DNA synthesis is the process by which DNA copies itself.
a)
True
b)
False
100 %
