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Unit 2 Review

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.

Gene

a)

Small section of DNA

b)

Tightly coiled DNA

c)

Brain of the cell

d)

Where proteins are made

2.

Antiparallel means …

a)

Not parallel

b)

Sometimes parallel

c)

Running in different directions

d)

Complementary

3.

Made up of a phosphate group, sugar, and nitrogen base

a)

DNA

b)

RNA

c)

Nucleic acid

d)

Nucleotide

4.

Macromolecule that stores genetic information

a)

Protein

b)

Nucleic acid

c)

Carbohydrate

d)

Lipid

5.

Tightly coiled DNA

a)

Chromosome

b)

Gene

c)

Nucleus

d)

Ribosome

6.

Mutation

a)

Small section of DNA

b)

N base is added

c)

Any change to DNA

d)

N base is removed

7.

ATT GAC

TAA CTG

The second line is known as …

a)

RNA

b)

Complementary strand

c)

mRNA

d)

Chargaff’s Rule

8.

Part of a cell that performs a specific job

a)

Nucleotide

b)

Organelle

c)

Chromosome

d)

Gene

9.
In RNA, Uracil pairs with ______. 
a)
cytosine
b)
adenine
c)
guanine
d)
thymine
10.
The process to go from DNA to mRNA is _______
a)
translation
b)
transcription
c)
replication
11.
The process to go from mRNA to a protein is called ____
a)
transcription
b)
rRNA
c)
replication
d)
translation
12.
Which component of DNA determines the traits of an organism? 
a)
Nitrogen Bases
b)
Sugar-Phosphate Backbone
c)
Hydrogen bonds
13.
What is the location in the cell for translation?
a)
nucleus
b)
mitochondria
c)
ribosome
d)
chloroplast
14.
What is the three base sequence of mRNA that codes for a single amino acid?
a)
Anticodon
b)
Codon
c)
Protein
15.
What is the location in the cell for transcription?
a)
nucleus
b)
cytoplasm
c)
ribosome
d)
mitochondria
16.
Which is the mRNA molecule that would be transcribed from this DNA template:
TGGCAAGTACGT
a)
ACCGTTCATGCA
b)
UGGCAAGUACGU
c)
UCCGUUCUUGCU
d)
ACCGUUCAUGCA
17.
Translation is the process where
a)
mRNA is created in the Nucleus
b)
mRNA is decoded to form a protein 
c)
glucose molecules are made
d)
is where lipids are synthesised
18.
How many amino acids are coded for by this sequence of nucleotides:
ATG GGA ACT CCA
a)
4
b)
2
c)
6
d)
12
19.
What type of RNA carries the DNA message out of the nucleus to the ribosomes?
a)
mRNA
b)
tRNA
c)
RNA
d)
DNA
20.
When DNA is transcribed to RNA.... 
a)
A pairs with U
b)
C pairs with U
c)
A pairs with T
d)
C pairs with T
21.
What will be the resulting mRNA from this DNA sequence:
GAT-TAC-AGA-TTA-CAT?
a)
CTA-ATG-TCT-AAT-GTA
b)
GAU-UAG-UGA-UUA-GUT
c)
CUA-AUG-UCU-AAU-GUA
d)
CAT-ACA-TAC-ATA-TAG
22.
_______ is made during transcription and ________ is made during translation.
a)
mRNA / a protein
b)
a protein / mRNA
c)
Ribosome / Nucleus
d)
mRNA / tRNA
23.

Where does TRANSCRIPTION occur?

a)

Nucleus

b)

Ribosome

c)

Cytoplasm

d)

Mitochondria

24.

Why must transcription occur where DNA can be found?

a)

because DNA can't leave

b)

because ribosomes are in the nucleus

c)

because DNA polymerase is found there

d)

because helicase unzips the DNA

25.

Which organelle is the location where protein is made?

a)

Ribosome

b)

Nucleus

c)

Cytoplasm

d)

Nucleotide

26.

When these bond together, they form a protein

a)

Amino Acids

b)

Peptide Bonds

c)

Ribose

d)

Nucleotides

27.
Genetic info flows in one direction. Which best represents this flow?
a)
DNA-protein-RNA
b)
Protein-RNA-DNA
c)
RNA-protein-DNA
d)
DNA-RNA-protein
28.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
29.
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
30.

What mutation has occurred here?

T-G-A-C-C-A

T-G-A-G-C-A

a)

Substitution

b)

Deletion

c)

Insertion

d)

Frameshift

31.

A mutation is defined as:

a)

A change in the cell's structure

b)

Anything that changes in an embryo

c)

Any change in the physical features of a human

d)

A change in the DNA sequence

32.

Why are insertion and deletion (frameshift) mutations so harmful?

a)

They change all of the codons from the mutation on down the line, which changes the amino acid sequence

b)

They insert things that an organism doesn't need.

c)

They often delete things that organisms need.

d)

Insertion and deletions are not any more harmful than substitution mutations.

33.
Normal-
GAG-CTC-GAC-AGA
Mutant
GAG CTC-CAC-AGA
a)
no mutation
b)
substitution
c)
insertion
d)
deletion
34.
What is a Gene?
a)
A segment of RNA that encodes for a protein
b)
A chromosome
c)
A segment of DNA that encodes for a protein
d)
Your genome
35.

Mutations that involve parts of or all of

a chromosome

a)

Replication

b)

Deletion Mutation

c)

Chromosomal Mutation

d)

Transcription

36.

when one or more nucleotides are deleted

a)

substitution

b)

addition

c)

remake

d)

deletion

37.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
a)
Substitution
b)
Deletion
c)
Insertion
d)
Inversion
38.

In nitrogen base pairs, C always pairs with...

a)

A

b)

T

c)

G

d)

C

39.

Which of the following best describes how genes influence an organism's traits?

a)

Genes control the production of proteins, which affect the organism's traits.

b)

DNA controls the production of lipids, which determine the organism's traits.

c)

Carbohydrates control the production of genes, which affects the organism's traits.

d)

Genes control the development of sister centrioles, which determine the organism's traits.

40.

Genetic mutations can be...

a)

beneficial, harmful, or neutral

b)

beneficial only

c)

harmful only

d)

neutral only

41.

In nitrogen base pairs, A pairs with...

a)

A

b)

T

c)

G

d)

C

42.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
43.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
44.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
45.
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
46.
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
47.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
48.
Which 2 molecules forms the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
sugar and the nucleus
d)
deoxyribose (sugar) and phosphate
49.
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
50.

Bundled up, organized DNA is called a

a)

gene

b)

trait

c)

chromosome

d)

nucleotide

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