WorksheetsDNA Structure
Total questions: 28
Worksheet time: 14mins
Name
Class
Date
1.
During replication, which new complementary strand will be arranged from the DNA template CGC GTA TCA?
a)
GCG CAC AGG
b)
GCG CAT AGT
c)
ATA CGC TTT
d)
TAT TAT TAT
2.
Which molecules make up a DNA nucleotide?
a)
ribose, uracil, and phosphate
b)
ribose, thymine, and phosphate
c)
deoxyribose, uracil, and phosphate,
d)
deoxyribose, thymine, and phosphate
3.
Which base sequence is complementary to the DNA segment CGG TAG?
a)
GGG AAG
b)
ACC ACA
c)
GCC ATC
d)
TTT AAA
4.
Which best describes what would happen if the double helix structure of DNA could not be “unzipped”?
a)
DNA replication would not occur
b)
DNA replication would occur more frequently.
c)
DNA replication would occur at the same rate.
d)
DNA would replicate only half of its nucleotides
5.
In which part of the cell does DNA replication occur in Eukaryotes?
a)
cytoplasm
b)
nucleus
c)
ribosome
d)
vacuole
6.
A Nucleotide does NOT contain...
a)
A five carbon sugar
b)
A phosphate group
c)
Nitrogenous base
d)
DNA Polymerase
7.
In Prokaryotes, DNA molecules are located in the
a)
nucleus
b)
cytoplasm
c)
ribosome
d)
plasma membrane
8.
The main enzyme involved in linking individual nucleotides into DNA molecules is
a)
transfer RNA
b)
ribose
c)
RNA Polymerase
d)
DNA Polymerase
9.
Before a cell divides, it duplicates it's DNA in a copying process called....
a)
Replication
b)
Transcription
c)
Translation
d)
Duplication
10.
Thymine always attaches to what other nitrogenous base?
a)
Guanine
b)
Cytosine
c)
Adenine
d)
Uracil
11.
Each 'parent' strand of DNA serves as a _______________ for the synthesis of new complementary strands of DNA
a)
base
b)
codon
c)
template
d)
baby
12.
What nitrogenous base pairs with cytosine?
a)
adenine
b)
thymine
c)
RNA
d)
guanine
13.
What name is given to the spiral structure including complimentary nucleotide strands making DNA?
a)
RNA
b)
nucleotide
c)
double helix
d)
hydrogen bond
14.
What aspect of DNA replication allows it to be considered a semi-conservative process?
a)
DNA replication occurs at an extremely slow rate
b)
DNA replication only duplicates nucleotides in pairs
c)
Each replicated strand of DNA is an old strand paired with a new strand
d)
Each replicated strand DNA is an identical match with no variations
15.
Which part of the DNA double helix structure is important in helping code for proteins?
a)
nitrogen bases
b)
hydrogen bonds
c)
deoxyribose sugar
d)
phosphate group
16.
What enzyme is responsible for 'unzipping' the DNA during replication?
a)
DNA Polymerase
b)
Helicase
c)
Lipase
d)
Lactase
17.
Which of the following is NOT a trait of RNA?
a)
Single stranded
b)
Contains the nitrogen base Uricil
c)
Has a ribose sugar
d)
has a deoxyribose sugar
18.
Which components of DNA are held together by weak hydrogen bonds?
a)
phosphate and adenine
b)
phosphate and deoxyribose
c)
thymine and deoxyribose
d)
cytosine and guanine
19.
What event takes place first in DNA replication?
a)
A single-stranded RNA molecule is formed
b)
tRNA links to an amino acid
c)
Free floating nucleotides are bonded together
d)
the DNA molecule 'unzips' along weak hydrogen bonds
20.
What is the result of normal chromosome replication?
a)
Lost of worn out chromosomes are replaced
b)
Each daughter cell is provided with twice as many chromosomes
c)
The exact number of centrioles is provided for spindle fiber attachment
d)
Two identical sets of chromosomes are produced
21.
Which molecule is correctly paired with its building blocks?
a)
cellulose - polypeptides
b)
DNA - nucleotides
c)
protein - monosaccharides
d)
fat - disaccharides
22.
What type of sugar is found in DNA?
a)
Deoxyribose
b)
Ribose
c)
Glucose
d)
Fructose
23.
What are the four nitrogen bases for DNA?
a)
A, T, U, G
b)
A, U, C, G
c)
A, T, C, G
d)
U, T, C, G
24.
This is known as a(n)
a)
nucleotide
b)
carbohydrate
c)
enzyme
d)
amino acid
25.
(A) represents
a)
Phosphate
b)
Sugar
c)
Nitrogen Base
d)
Hydrogen Bonds
26.
(B) represents
a)
Deoxyribose Sugar
b)
Ribose Sugar
c)
Phosphate
d)
Nitrogen Base
27.
(C) represents
a)
Nitrogen Base
b)
Deoxyribose Sugar
c)
Ribose Sugar
d)
Phosphate
28.
(D) represents
a)
Hydrogen Bonds
b)
Covalent Bonds
c)
Synapse Gap
d)
Ionic Bonds
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