NEW
Font size
S
M
L
XL
WorksheetsDNA
Total questions: 31
Worksheet time: 55mins
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.
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
3.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
4.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
5.
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
6.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
7.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
8.
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
9.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
10.
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
11.
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
12.
Which scientists made the first model of DNA?
a)
Watson and Crick
b)
Wilkins and Franklin
c)
Wilkins and Crick
d)
Watson and Franklin
13.
Which scientist first saw DNA using an x-ray machine and described its shape?
a)
Watson
b)
Crick
c)
Franklin
14.
DNA is found in ...
a)
Almost every cell in your body
b)
Only brain cells
c)
Only blood cells
d)
Only skin cells
15.
What has DNA?
a)
animals
b)
plants
c)
bacteria
d)
all of the above
16.
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
17.
What is the relationship between a protein, the cell, and DNA?
a)
DNA is produced by protein which is produced in the cell
b)
Protein is composed of DNA which is produced in the nucleus
c)
DNA controls the production of protein in the cell
d)
A cell is composed of DNA and protein
18.
Specific proteins produced in a cell are directly related to the
a)
number of mitochondria in the cell
b)
types of ribosomes in the cell
c)
sequence of sugars and phosphates in the cell
d)
sequence of bases in the DNA
19.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
20.
The DNA sequence TACGAA in RNA would be Hint: remember there is no T in RNA
a)
AUGCUU
b)
ATGCTT
c)
GCATCC
d)
GCAUCC
21.
mRNA is important, because it __________.
a)
Carries info from the nucleus to ribosomes
b)
Carries amino acids to ribosomes
c)
Helps with RNA splicing
d)
Makes up ribosomes
22.
What is the term for a three nucleotide sequence that codes for an amino acid? For example: AUG
a)
Nitrogen base
b)
Codon
c)
Amine
d)
Phosphate group
23.
Transfer RNA (tRNA) is important because it __________.
a)
Carries amino acids to the ribosome
b)
Carries ribosomes to the ER
c)
Carries glucose to mitochondria
d)
Carries mRNA out of the nucleus
24.
What is the name of the organelle where proteins are made?
a)
Cytoplasm
b)
Amino acids
c)
Ribosomes
d)
Endoplasmic Reticulum
25.
Proteins are made up of...
a)
Fatty acids
b)
Nucleic acids
c)
Amino Acids
d)
Cytoplasm
26.
Which of these is part of the description of protein?
a)
a chain of amino acids
b)
a folded chain of carbohydrates
c)
a branched chain of fatty acids
d)
a branched chain of nucleic acids
27.
Which most directly affects the sequence of amino acids in a protein?
a)
the DNA in the nucleus of the cell
b)
the amino acids found in the cytoplasm
c)
the type of cell in which the protein is made
d)
the region of the cell in which the protein is made
28.
How many strands make up RNA?
a)
1
b)
2
c)
3
d)
4
29.
The sugar found in DNA is
a)
Ribose
b)
Deoxyribose
c)
Glucose
d)
Lactic
30.
Who does Uracil pair with?
a)
Thymine
b)
Adenine
c)
Cytosine
d)
Guanine
31.
Amino acids are used to make ____________
a)
lipids
b)
proteins
c)
carbs
d)
nucleic acids
Reset
