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2024 Bio Unit 2: Q1 DNA, Rep, Trans, and Trans

Total questions: 28

Worksheet time: 34mins

Name
Class
Date
1.
The two strands of a DNA molecule are held together by ________ bonds between their base pairs.
a)
covalent
b)
hydrogen
c)
ionic
d)
peptide
2.
Which of the following is not a base found in DNA?
a)
adenine
b)
thymine
c)
cytosine
d)
uracil
3.
If a segment of double-stranded DNA has 40 percent A, how much of it is C?
a)
40
b)
10
c)
15
d)
20
4.
If one strand of DNA has the sequence TTACCG, the sequence of the other strand of the same molecule will be
a)
AATGGC
b)
TTACCG
c)
AACGGC
d)
AATGGG
5.
Which enzyme copies DNA?
a)
DNA polymerase
b)
DNA helicase
c)
RNA polymerase
d)
RNA helicase
6.
What does mRNA do?
a)
provides information from DNA to ribosomes
b)
transfers amino acids to the ribosomes
c)
makes up ribosomes
d)
builds proteins
7.
What does rRNA do?
a)
provides information from DNA to ribosomes
b)
transfers amino acids to the ribosomes
c)
makes up ribosomes
d)
builds proteins
8.
What does tRNA do?
a)
provides information from DNA to ribosomes
b)
transfers amino acids to the ribosomes
c)
makes up ribosomes
d)
builds proteins
9.
What is the process that copies information from DNA into RNA?
a)
protein synthesis
b)
transcription
c)
translation
d)
DNA Polymerase
10.

If a strand of DNA had bases in the following order - ATCCGTC, what would be the replicated complementary strand?

a)

UAGGCAG

b)

ATCCGTC

c)

TAGGCAG

d)

TUGGCTG

11.

If a strand of DNA had bases in the following order - ATCCGTC, what would be the transcribed mRNA sequence?

a)

TAGGCAG

b)

UAGGCAG

c)

TUGGCUG

d)

None of the above are correct

12.

Use the codon chart to determine the amino acid sequence: (Hint: mRNA must be used to determine the AA sequence!)

TAA GCG TAG

a)

tyrosine, alanine, stop

b)

stop, alanine, tyrosine

c)

start, arginine, methionine

d)

Isoleucine, arginine, isoleucine

13.

Which of the following base pairs with adenine in RNA?

a)

thymine

b)

guanine

c)

uracil

d)

cytosine

14.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
15.

A section of DNA contains the following bases in this order: GAT CCT

Which of the following mRNA sequences complements this section of DNA?

a)

CUA GGA

b)

TCG AAG

c)

CTA GGA

d)

AGC UUC

16.

What is the correct order for the following events that occur during protein synthesis?

a)

B,E,A,C,D

b)

B,A,E,C,D

c)

D,A,E,C,B

d)

C,B,A,E,D

17.

Which of the following polypeptides are coded for by the mRNA sequence


5' AUG GUU AAA 3'

a)

Val, Lys, Phe

b)

Met, Asp, Phe

c)

Met, Val, Lys

d)

Ile, Gln, Lys

18.
DNA is a polymer made of:
a)
Nucleotides
b)
Ribosomes
c)
Purines
d)
Pyrimidines
19.
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
20.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
21.
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
22.
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
23.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein
24.
DNA codes for...
a)
bases
b)
proteins
c)
amino acids
d)
phosphates
25.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
26.
Which two scientists are accredited with correctly deducing the double helix model of DNA?
a)
Watson and Crick
b)
Wilkins and Franklin
c)
Wilkins and Crick
d)
Watson and Franklin
27.
Replicate the following strand of DNA: 
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
28.
What is a gene?
a)
A bundle (like a hot dog bun) that the DNA is packed into
b)
something inside the nucleus
c)
a piece of DNA
d)
all of your DNA

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