Download Mr Proffitt – IB Biology Name Unit 3 Test Multiple Choice – 1 Mark

Mr Proffitt – IB Biology
Name _____________________________
Unit 3 Test
Multiple Choice – 1 Mark Each. Select the correct answer of the given choices.
1.
Which events occur during the G1 phase and S phase of the cell cycle?
A.
B.
C.
D.
G1 phase
S phase
DNA replicates
mitosis begins
cell divides
cell grows
cell grows
cell divides
mitosis begins
DNA replicates
(Total 1 mark)
2.
What is the sequence of stages during the cell cycle?
A.
G1 → S → G2 → mitosis → cytokinesis
B.
mitosis → G1 → G2 → cytokinesis →
S
C.
G1 → G2 → S → mitosis → cytokinesis
D.
G1 → G2 → mitosis → cytokinesis →
S
3.
Which of the following does not occur during interphase?
A.
Replication
B.
Translation
C.
Cytokinesis
D.
An increase in the number of mitochondria
4.
The DNA of a particular cell is damaged, so that the cell continues to divide uncontrollably.
What is the possible result?
A.
Coronary heart disease
B.
AIDS
C.
Tumour formation
D.
Down syndrome
5.
Which molecule is found in both DNA and RNA?
A.
Ribose
B.
Uracil
C.
Phosphate
D.
Amino acid
6.
The following diagram shows a short stretch of DNA. What bases are indicated by labels Y and
Z?
(Total 1 mark)
(Total 1 mark)
(Total 1 mark)
(Total 1 mark)
A.
B.
C.
D.
Y
thymine
thymine
uracil
uracil
Z
adenine
guanine
guanine
adenine
(Total 1 mark)
IB Questionbank Biology
1
7.
Which molecules form the nucleotide marked in the diagram?
A.
B.
C.
D.
phosphate, deoxyribose and nitrogenous base
phosphorus, ribose and nitrogenous base
phosphorus, deoxyribose and guanosine
phosphate, ribose and guanine
(Total 1 mark)
8.
Which of the following forms the nucleosome?
A.
DNA and histone molecules
B.
DNA only
C.
RNA and histone molecules
D.
Histone molecules only
9.
What are Okazaki fragments?
A.
Short lengths of RNA primase attached to the DNA during replication
B.
Short sections of DNA formed during DNA replication
C.
Nucleotides added by DNA polymerase I in the same direction as the replication fork
D.
Sections of RNA removed by DNA polymerase III and replaced with DNA
10.
What principle is necessary to preserve the sequence of DNA during replication?
A.
Base pairing is complementary.
B.
One gene codes for one polypeptide.
C.
Substrates are specific to enzymes.
D.
The genetic code is universal.
(Total 1 mark)
(Total 1 mark)
(Total 1 mark)
11.
What is a codon?
A.
A sequence of nucleotides on rRNA that corresponds to an amino acid
B.
A sequence of nucleotides on mRNA that corresponds to an amino acid
C.
A sequence of nucleotides on tRNA that corresponds to an amino acid
D.
A sequence of nucleotides on DNA that corresponds to an amino acid
(Total 1 mark)
12.
The antisense strand on the DNA molecule coding for three codons of a gene is
TATCGCACG
What are the anticodons of the three tRNA molecules that correspond to this sequence?
A.
UAU, CGC and ACG
B.
ATA, GCG and TGC
C.
AUA, GCG and UGC
D.
TAT, CGC and ACG
(Total 1 mark)
IB Questionbank Biology
2
13.
The table below shows the codons that determine different amino acids in protein translation.
Second base in codon
Third base
U
C
A
G
in codon
Phe
Ser
Tyr
Cys
U
Phe
Ser
Tyr
Cys
C
Leu
Ser
—
—
A
Leu
Ser
—
Trp
G
C
Leu
Pro
His
Arg
U
Leu
Pro
His
Arg
C
Leu
Pro
Gln
Arg
A
Leu
Pro
Gln
Arg
G
A
Ile
Thr
Asn
Ser
U
Ile
Thr
Asn
Ser
C
Ile
Thr
Lys
Arg
A
Met
Thr
Lys
Arg
G
G
Val
Ala
Asp
Gly
U
Val
Ala
Asp
Gly
C
Val
Ala
Glu
Gly
A
Val
Ala
Glu
Gly
G
What is the sequence of the amino acids that is being translated from the following mRNA
sequence?
5´ AUGGGUGCUUAUUGGUAA 3´
A.
Met-Pro-Arg-Ile-Thr
B.
Met-Cys-Ser-Tyr-Trp
C.
Met-Gly-Ala-Tyr-Trp
D.
Met-Gly-Tyr-Ala-Thr
First base
in codon
U
(Total 1 mark)
14.
What happens during translation?
A.
Copying of DNA to produce DNA
B.
Copying of DNA to produce mRNA
C.
Copying of DNA to produce tRNA
D.
Polypeptide synthesis
(Total 1 mark)
IB Questionbank Biology
3
Short Answer – Various marks. Answer, to the best of your ability, the following questions. Be
sure to pay attention to the number of marks available for each question!
15. The micrograph below shows an adult human stem cell.
[© Science Photo Library. Used with permission.]
(a)
The cell cycle can be divided into two parts: interphase and mitosis.
(i)
Identify, with a reason, whether the stem cell in the micrograph is in interphase or
mitosis and state your reasoning.
...........................................................................................................................
...........................................................................................................................
(2)
(ii)
Deduce two processes that occur in human cells during this part of the cell cycle,
but not during the other part.
1. .......................................................................................................................
2. .......................................................................................................................
(2)
(Total 4 marks)
16.
The following sequence of pictures, made using an electronic imaging technique, shows a cell
undergoing
division.
[Adapted by permission from Macmillan Publishers Ltd, Fuller, B G et al. 2008. “Midzone activation of aurora B in
anaphase produces an intracellular phosphorylation gradient”. Nature. Vol 453.]
(a)
State the stage of mitosis typified by image II.
......................................................................................................................................
(1)
IB Questionbank Biology
4
(b)
List two processes that involve mitosis.
......................................................................................................................................
......................................................................................................................................
(2)
(c)
State the process that results in tumour (cancer) formation or development.
......................................................................................................................................
(1)
(Total 4 marks)
17.
The diagram below shows two nucleotides linked together to form a dinucleotide.
(a)
(i)
Identify the chemical group labelled I.
...........................................................................................................................
(1)
(ii)
State the type of bond labelled II.
...........................................................................................................................
(1)
(b)
Distinguish between the sense and antisense strands of DNA during transcription.
......................................................................................................................................
......................................................................................................................................
......................................................................................................................................
(c)
Compare the DNA found in prokaryotic cells and eukaryotic cells.
......................................................................................................................................
......................................................................................................................................
......................................................................................................................................
......................................................................................................................................
......................................................................................................................................
(d)
Explain the role of transfer RNA (tRNA) in the process of translation.
......................................................................................................................................
......................................................................................................................................
......................................................................................................................................
......................................................................................................................................
......................................................................................................................................
(1)
(2)
(2)
(Total 7 marks)
IB Questionbank Biology
5
Essay – CHOOSE ONE. Answer one of the following essay choices. Take note of the command
terms, and number of marks awarded for each question. – 11 Marks.
19. Up to two additional marks are available for the construction of your answers.
(2)
(a)
Distinguish between RNA and DNA.
(c)
Outline the process of translation.
(3)
(6)
(Total 11 marks)
20.
Up to two additional marks are available for the construction of your answers.
(2)
(a)
Explain the process of DNA replication.
(6)
(b)
Explain the process of transcription.
(3)
(Total 11 marks)
IB Questionbank Biology
6