WorksheetsUnit 5 Review
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
Which defines a codon?
a)
a protein that begins transcription by breaking apart hydrogen bonds
b)
a free-floating nucleotide that attaches to an open DNA strand
c)
the genetic “code word” of three nitrogen bases on mRNA that specify one amino acid
d)
the strong bond between two complementary nitrogen bases
2.
Below is a list of nitrogenous bases found in DNA and RNA. Which of the nitrogenous bases are present in DNA? Choose the BEST answer.
a)
I, III
b)
II, III, IV, V
c)
I, II, IV, V
d)
I, II, III, IV
3.
What part of DNA is responsible for coding your traits, referred to as the genetic code?
a)
Phosphates
b)
Nitrogen bases
c)
Deoxyribose sugars
d)
Ribose sugars
4.
The surface of the nucleus holds tiny pores that allow small, single-stranded molecules to pass through. This is one reason why only _____________ can leave the nucleus during the process of protein synthesis.
a)
DNA
b)
Proteins
c)
tRNA
d)
mRNA
5.
Which processes occurs in the nucleus?
a)
1 and 2
b)
2 and 3
c)
3 and 4
d)
4 and 5
6.
Process 2 is known as
a)
Replication
b)
Mutation
c)
Transcription
d)
Translation
7.
What is the complementary mRNA sequence for the DNA sequence: 3' A-C-T-T-C-G-A 5'
a)
5’ T-G-A-A-G-C-T 3’
b)
3’ U-G-A-A-G-C-U 5’
c)
5’ U-G-A-A-G-C-U 3’
d)
3’ T-G-A-A-G-C-T 5’
8.
This diagram shows which cellular process?
a)
Replication
b)
Transcription
c)
Translation
d)
Mutation
9.
The site of translation is the
a)
Nucleus
b)
Mitochondria
c)
Chloroplast
d)
Ribosome
10.
Some events that take place during the synthesis of a specific protein are listed below. What is the correct order of events?
a)
ii, v, i, iii, iv
b)
iv, i, v, iii, ii
c)
ii, i, v, iv, iii
d)
iii, ii, i, v, iv
11.
Which amino acid is coded for by the mRNA codon CAC?
a)
Leucine
b)
Glycine
c)
Valine
d)
Histidine
12.
What protein is coded for by the following sequence? 3' A-G-C-C-T-A-G-C-G-T-A-A 5' (use your scratch paper to help you with this question)
a)
Serine, leucine, alanine, stop
b)
Serine, arginine, aspartic acid, isoleucine
c)
Serine, aspartic acid, arginine, isoleucine
d)
Methionine, asparagine, arginine, stop
13.
Which of the following DNA codons will produce a different amino acid than the one produced by GCA?
a)
GCT
b)
TCT
c)
GCC
d)
TCA
14.
Mutations that can affect the offspring of an organism occur in what cell type?
a)
Body cells
b)
Gametes
c)
Blood cells
d)
Brain cells
15.
Sometimes 3 copies of a chromosome are found in a cell (instead of 2). This is called
a)
polypoidy
b)
trisomy
c)
nondisjunction
d)
frameshift mutation
16.
Below you will find a normal gene sequence of DNA and a mutated version of that same gene sequence. What type of mutation has occurred?
a)
Substitution
b)
Insertion
c)
Deletion
d)
Translocation
100 %
