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DNA and Protein Synthesis

Total questions: 39

Worksheet time: 51mins

Name
Class
Date
1.
What monomers are DNA and RNA consisted of?
a)
nitrogen base
b)
nucleotides
c)
sugar-phosphate backbone
d)
blood
2.
DNA has a ______ strand; RNA has a ______ strand.
a)
double/double
b)
double/triple
c)
double/single
d)
single/single
3.
One strand of DNA/RNA that is composed of many nucleotides is a ______?
a)
nitrogenous base
b)
momnonucleotide
c)
backbone
d)
polynucleotide
4.
DNA replication is considered _____ because it uses the old strands as templates?
a)
RNA
b)
wasteful
c)
semiconservative 
d)
aggressive
5.
In how many directions does the DNA replication proceed at many sites simultaneously? 
a)
1
b)
2
c)
3
d)
4
6.
 What enzyme initiates DNA replication?
a)
DNA polymerase
b)
tRNA
c)
RNA polymerase
d)
mRNA
7.
Transcription is the production of ___ from ___.
a)
protein, RNA
b)
RNA , DNA
c)
DNA, RNA
d)
DNA, protein
8.
Translation is the production of ___ from ___.
a)
RNA, protein
b)
DNA, protein
c)
RNA, DNA
d)
protein, RNA
9.
What type of bond join the nitrogen bases together in DNA? 
a)
covalent
b)
hydrogen
c)
mutual
d)
peptide
10.
Which is not one of the three types of RNA?
a)
mRNA (messenger)
b)
rRNA (ribosomal)
c)
tRNA (transfer)
d)
nRNA (nitrogen)
11.
Identify the complementary DNA strand: ATTACGAT
a)
GAAGTGCA
b)
TAATGCTA
c)
TCTUCAAA
d)
CGGCACG
12.
In RNA, the nitrogen base____ replaces ____ that was present in DNA. 
a)
A, U (adenine, uracil)
b)
C, G (cytosine, guanine)
c)
U, T (uracil, thymine)
d)
U, A (uracil, adenine)
13.
What is the transcribed mRNA strand for CATTAA
a)
GUAAUU
b)
GTAATT
c)
AUGGUU
d)
CATTAA
14.
The "central dogma" states that genetic information flows from 
a)
Protein-->mRNA-->DNA
b)
Protein-->DNA-->mRNA
c)
mRNA-->DNA-->Protein
d)
DNA-->mRNA-->Protein
15.
The three parts of a nucleotide are 
a)
mRNA, phosphate, nitrogen base
b)
nitrogen base, phosphate, sugar
c)
sugar, phosphate, mRNA
d)
mRNA, nitrogen base, sugar
16.
The rungs of the DNA molecules consist of 
a)
a pair of nitrogen bases
b)
sugar and phosphate
c)
single strands
d)
single nitrogen bases
17.
The backbone (sides) of the DNA and RNA molecules are made of alternating 
a)
nitrogen bases and phosphates
b)
sugars and nitrogen bases
c)
phosphates and sugars
d)
nitrogen bases
18.
Transcription takes place in the 
a)
cytoplasm
b)
ribosome
c)
mitochondrion
d)
nucleus
19.

Translation occurs at the

a)
nucleus
b)
mitochondria
c)

ribosome

d)
golgi apparatus
20.
The codon (set of 3 nitrogen bases) codes for 1 of 20
a)
endoplasmic reticulum
b)
RNA
c)
genes
d)
amino acids
21.

Which of the following is a “stop” codon?

a)

AAG

b)

UGC

c)

UGA

d)

UGG

22.

The codon UUU codes for the amino acid:

a)

threonine

b)

phenylalanine

c)

glycine

d)

leucine

23.

How many nitrogen bases are needed to specify 3 amino acids?

a)

3

b)

6

c)

9

d)

12

24.

How many nitrogen bases are needed to specify 1 amino acid?

a)

1

b)

2

c)

3

d)

9

25.

Which codons code for the amino acid serine?

a)

AAA and AAG

b)

CUA and CUG

c)

UCU and AGU

d)

GAG and GAA

26.

what is the role of DNA?

a)

control the cell

b)

makes proteins

c)

store and transmit genetic information for the cell

d)

cellular respiration

27.

DNA controls our heredity by coding for what substance in our body?

a)

fats

b)

carbohydrates

c)

proteins

d)

lipids

28.

A mutation that involves a single nucleotide is called:

a)

chromosomal mutation

b)

point mutation

c)

inversion

d)

translocation

29.

Changes in the DNA sequence that affect genetic information are known as:

a)

replications

b)

transformations

c)

mutations

d)

prokaryotes

30.

In protein synthesis, amino acids are brought to the ribosome by:

a)

DNA

b)

mRNA

c)

tRNA

d)

rRNA

31.

What happens during the process of translation?

a)

mRNA is made from DNA

b)

mRNA attaches o tRNA and makes protein

c)

copies of DNA molecules are made

d)

transfer RNA is made from mRNA

32.

If the triplet code in DNA is AGT, then the mRNA codon would be:

a)

TCA

b)

AGT

c)

TCU

d)

UCA

33.

A group of 3 letters representing an amino acid is called:

a)

nucleotide

b)

ribosome

c)

codon

d)

anticodon

34.

The process by which the genetic code of DNA is copied into a strand of mRNA is called:

a)

translation

b)

transformation

c)

transcription

d)

replication

35.

One difference between DNA and RNA is that

a)

DNA= 1 strand

b)

DNA contains ribose sugar

c)

DNA has a double strand

d)

RNA is more complex

36.

DNA is copied into 2 new strands of DNA during a process called:

a)

replication

b)

translation

c)

transcription

d)

transformation

37.

What breaks the H- bonds in order for DNA to separate during replication and protein synthesis?

a)

Enzyme (RNA polymerase)

b)

nitrogen bases

c)

the nucleus

d)

RNA

38.

Which of the following nucleotides bonds with uracil?

a)

guanine

b)

cytosine

c)

thymine

d)

adenine

39.

A nucleotide does NOT contain

a)

sugar

b)

polymerase

c)

nitrogen base

d)

phosphate group

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