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DNA Structure and Function Concepts

Total questions: 23

Worksheet time: 12mins

Name
Class
Date
1.

What is the main function of DNA in the cell

a)
To synthesize proteins directly.
b)

DNA - RNA - PROTEIN

carries code to make protein

c)
To provide energy for cellular processes.
d)
To regulate cell division and growth.
2.

If a DNA Molecule has a left side code of: G,A,C,A,T,G

the right side would read?

a)
C,A,G,T,A,G
b)
G,C,T,A,C,G
c)
A,T,C,A,G,T
d)
C,T,G,T,A,C
3.

what type of RNA molecule is

C,U,G,U,A,C

a)
DNA molecule
b)
Protein structure
c)
Enzyme catalyst
d)
RNA molecule
4.

Name the difference between RNA and DNA molecule

a)
RNA is double-stranded and contains thymine; DNA is single-stranded and contains uracil.
b)
RNA contains ribose sugar; DNA contains deoxyribose sugar but both are single-stranded.
c)
RNA is single-stranded and contains uracil; DNA is double-stranded and contains thymine.
d)
RNA is double-stranded and contains thymine; DNA is single-stranded and contains uracil.
5.

Name the parts of a nucleotide

a)
Amino acids, fatty acids, glycerol
b)
Carbohydrates, proteins, lipids
c)
Enzymes, coenzymes, substrates
d)
Phosphate group, five-carbon sugar, nitrogenous base
6.

What is the name of the sugar in DNA?

a)
fructose
b)
glucose
c)
ribose
d)
deoxyribose
7.

what is the name of the sugar In RNA

a)
sucrose
b)
fructose
c)
glucose
d)
ribose
8.

what is the functional difference between DNA and RNA

a)
DNA is only found in the nucleus; RNA is found in the cytoplasm.
b)
DNA is single-stranded; RNA is double-stranded.
c)
RNA stores genetic information; DNA is involved in protein synthesis.
d)

DNA creates RNA while RNA creates PROTEIN

9.

What is the site of protein in Synthesis

a)
Mitochondria
b)
Nucleus
c)
Golgi apparatus
d)
Ribosomes
10.

Where are amino acids found?

a)

Amino acids are only found in Ribosomes.

b)
Amino acids are only found in dairy products.
c)
Amino acids are exclusively produced by plants.
d)
Amino acids can only be found in processed foods.
11.

How many types of amino acids are there?

a)
30
b)
25
c)
20
d)
15
12.

The ​ ___RNA from the nucleus attaches to the rRNA on the ribosome while waiting for the ​ ___RNA to bring ​

a)
m
b)
t
c)
Protein
d)
d
e)
g
13.

What type of substance will attach to the amino acids and transport it?

a)

RNA

b)

DNA

c)

tRNA

d)

mRNA

14.

Codons are found on ???, While anticodons are found on ???.

a)
DNA; mRNA
b)
tRNA; rRNA
c)
mRNA; rRNA
d)
mRNA; tRNA
15.

In each case, the code is really a sequence of ? bases that code for a particular ????? ?????.

a)

3 bases ; amino acid

b)

4 bases ; ribosome

c)

4 bases ; proteins

d)

3 bases ; proline

16.

UGG , AUU

creates what Amino Acid?

a)
Phenylalanine
b)
Serine
c)
Valine
d)
Tryptophan
e)

Isolecuine

17.

Translate this to mRNA

G,G,A,A,A,A,A,C,C,C,G,A,A,C,T

a)
C,C,T,T,T,T,T,G,G,G,C,T,T,G,A
b)
C,C,U,U,U,U,U,G,G,G,C,U,U,G,A
c)
G,G,A,A,A,A,A,C,C,C,G,A,A,C,A
d)
C,C,U,U,U,U,U,G,G,G,C,U,U,G,G
18.

What is the role of mRNA in protein synthesis?

a)

To carry amino acids to the ribosome.

b)

To serve as a template for assembling amino acids.

c)

To catalyze the formation of peptide bonds.

d)

To store genetic information.

19.

Which nitrogenous base is found in RNA but not in DNA?

a)

Cytosine

b)

Uracil

c)

Thymine

d)

Adenine

20.

What is the process of copying a segment of DNA into RNA called?

a)

Replication

b)

Mutation

c)

Transcription

d)

Translation

21.

Which enzyme is responsible for unwinding the DNA helix during replication?

a)

Helicase

b)

Ligase

c)

Polymerase

d)

Primase

22.

What is the complementary RNA sequence for the DNA strand: T,A,C,G,G,T?

a)

A,U,G,C,C,A

b)

U,A,C,G,G,U

c)

T,U,G,C,C,T

d)

A,T,G,C,C,A

23.

Which of the following is a stop codon in mRNA?

a)

AUG

b)

UAA

c)

CAG

d)

GCU