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WorksheetsDNA Structure and Code
Total questions: 29
Worksheet time: 26mins
Name
Class
Date
1.
What two parts of a nucleotide do not change throughout the structure of DNA?
a)
Five-Carbon Sugar and Nitrogen Base
b)
Phosphate Group and Nitrogen Base
c)
Five-Carbon Sugar and Phosphate Group
d)
All components remain the same throughout the DNA structure?
2.
Which shows the correct complementary base pairing for DNA?
a)
C-A, T-G
b)
A-G, C-T
c)
C-G, U-A
d)
T-A, G-C
3.
A monomer of DNA is called a(n)
a)
Monosaccharide
b)
Amino Acid
c)
Triglyceride
d)
Nucleotide
4.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
5.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
6.
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
7.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
8.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
9.
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
10.
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
11.
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
12.
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
13.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
14.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
15.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
16.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
17.
Nucleotides are made up of a sugar, phosphate, and..?
a)
nitrogenous base
b)
nucleic acid
c)
cholesterol
d)
fatty acid
18.
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 cell
c)
DNA controls the production of protein in the cell
d)
A cell is composed of DNA and protein
19.
the base that pairs with Thymine in DNA
a)
adenine
b)
guanine
c)
helicase
d)
nucleotide
20.
nitrogen base that pairs with guanine
a)
adenine
b)
cytosine
c)
nucloetide
d)
deoxyribose
21.
A five-carbon sugar found in DNA.
a)
ribose
b)
guanine
c)
deoxyribose
d)
helicase
22.
(deoxyribonucleic acid); genetic material that organisms inherit from their parents.
a)
RNA
b)
DNA
c)
deoxyribose
d)
double helix
23.
monomer of nucleic acid; consisting of a sugar, phosphate, and nitrogen base
a)
nucleotide
b)
guanine
c)
deoxyribose
d)
DNA
24.
The four types of nucleotides that make up DNA are named for their:
a)
hydrogen bonds
b)
nitrogenous bases
c)
phosphate group
d)
ring-shaped sugars
25.
Which model of base pairing is correct?
a)
A=T and C=G
b)
A=T=C=G
c)
A+T and G+C
d)
A=G and T=C
26.
Watson & Crick discovered the structure of DNA. They called it the _____________model:
a)
helical
b)
double-helix
c)
double-stranded
d)
twisted ladder
27.
If base-pairing rules state that Adenine always pairs with Thymine, and Cytosine pairs with Guanine, what would be the complementary strand to ACGGT?
a)
ACGGT
b)
TGGCA
c)
TGCCA
d)
ACCGT
28.
Which nucleotides are considered purines?
a)
Adenine & Thymine
b)
Cytosine & Guanine
c)
Adenine & Guanine
d)
Cytosine & Thymine
29.
Base pairs in a DNA strand are held together by what type of bonds?
a)
covalent
b)
hydrogen
c)
ionic
d)
James
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