Lecture Exam #2
Bi 10, November 1, 2013
Agenda
• Administrative Stuff
• Rules + Format
• Multiple Choice Section
• One-Word Answer Section
• Free Response Section
• Wrap-up
Rules and Format
• Closed book, no collaboration
• No talking or phone use –
talking/phone use/cheating is
grounds for a zero grade
• Raise a hand and ask if you need
clarification
• Answers will be on index cards. Put
your name on every index card before
turning in the test!
Card Format
• Index card 1, front: Number 1 – 15 for
multiple choice
• Index card 1, reverse: Number 16 –
20 for short answer
• Index card 2, front: 21
• Index card 2, reverse: 22
• Index card 3, front: 23
• Index card 3, reverse: 24 and 25
Question 1
Which of the following occurs in all
living organisms? (Choose only
one.)
A) Mitosis
B) Transcription
C) Reverse Transcription
D) Cancer
E) Meiosis
Question 2
Cancer results from a loss of control
over... (choose only one)
A) Meiosis
B) The cell cycle and mitosis
C) Translation
D) The Calvin Cycle
E) PCR
Question 3
During the light reactions of
photosynthesis, which of the following
does NOT occur?
A) Energy from sunlight is
captured by chlorophyll.
B) NADPH is produced from
NADP+.
C) ATP is produced from ADP.
D) Carbon dioxide is converted
into sugar.
E) Oxygen is released as waste.
Question 4
Which of the following is NOT a similarity
between photosynthesis and respiration?
A) Both include an electron transport chain
to generate ATP from ADP.
B) Both involve transferring electrons via
carrier molecules. (Examples: NADH,
NADPH)
C) Both create energy that can be used by
the organism to perform work.
D) In eukaryotes, both occur in specialized
organelles.
Question 5
These microarray results show levels of mRNA for
three different genes in cells from tumors and in
normal cells. Which of these genes is a likely tumor
suppressor – Gene A, Gene B, or Gene C?
Cells
Gene A
Patient 1’s
High
tumor
Patient 2’s
tumor
Patient 3’s
tumor
Control
(normal
cells)
Gene B
Gene C
Normal
Normal
Normal
Low
Normal
High
Normal
Normal
Normal
Normal
Normal
Question 6
Which of the following organisms can
perform photosynthesis unaided? Choose
all that apply.
A) Cyanobacteria
B) Plants
C) Animals
D) Protist algae
E) Fungi
Question 7
Which of the following responses is correctly
ranked from smallest to largest?
A) Gene, nucleotide base,
genome, chromosome
B) Nucleotide base, gene,
chromosome, genome
C) Chromosome, gene,
nucleotide base, genome
D) Nucleotide base, gene,
genome, chromosome
E) Nucleotide base, genome,
chromosome, gene
Question 8
Which of the following statements about
meiosis is true?
A) The second division of meiosis separates
homologous chromosomes.
B) The first division of meiosis separates sister
chromatids.
C) Eggs and sperm are produced via meiosis.
D) Meiosis only occurs in prokaryotes.
E) A somatic mutation is a mutation during
meiosis.
Question 9
Consider the Punnett square below.
The circled letters represent the
possible products of _______ from
each parent.
A)Mitosis
B)Transcription
C) Translation
D)Meiosis
E)Fertilization
Question 10
When making a fusion of green fluorescent
protein to an enzyme, I include a 24-base
linker (see board). What would happen if I
used a linker that was 25 bases long instead?
A) There would be a frame shift, since codons are
read in sets of 3 bases, and 25 isn’t divisible by 3.
B) There would be a nonsense mutation, since the
linker would need to contain a stop codon.
C) There would be a missense mutation, since the
second amino acid in the linker would be misread.
D) There would be a deletion, since codons are read
in sets of two bases, and 25 isn’t divisible by 2.
Question 11
A mouse dies and is buried in the backyard.
How could a carbon atom from that mouse
plausibly end up inside a sugar molecule in
an apple? Choose one.
A) It is taken up directly from the soil by the
apple tree’s roots, then stored in the apple.
B) The body of the mouse is decomposed by
insects. The insects die, and the tree takes up
their carbon from its roots.
C) It is converted to energy in the air, which the
tree uses for photosynthesis.
D) It becomes carbon dioxide in the air, which
is used by the tree for photosynthesis.
Question 12
If a person has curly hair, that is
an example of a…
A) Genotype
B) Phenotype
C) Meiotic product
D) Transcriptional event
E) None of the above
Question 13
During the HIV life cycle, reverse
transcriptase copies…
A) RNA to make DNA
B) DNA to make RNA
C) Protein to make RNA
D) RNA to make protein
E) DNA to make protein
F) Protein to make DNA
Question 14
The most lethal poison in the death cap
mushroom (shown below) blocks
transcription. Which of the following
enzymes would you expect it to block from
working?
A) DNA polymerase
B) RNA polymerase
C) Reverse transcriptase
D) Lactase
E) tRNA synthetase
Question 15
How many genes and alleles are involved in the Punnett
square shown at the lower right?
A) Two genes on different
chromosomes, each gene
having two different alleles.
B) One gene with four different
alleles.
C) Two genes on different
chromosomes, each gene
having one allele.
D) One gene with two different
alleles.
Answer in one word.
Question 16
What is the name for the process of
decoding mRNA to protein?
Question 17
In eukaryotes, in which organelle
does that process occur?
Answer in one word.
Question 18
What is the term for the DNA
region directly next to a gene’s
coding sequence where
transcription factors bind to
start transcription?
(NOT an enhancer!)
Answer in one or two words.
Question 19
Which part of photosynthesis
incorporates carbon dioxide
into sugar? (There are two
acceptable answers.)
Answer in one or two letters.
Question 20
In the ABO system, which blood
type can be safely donated to
anybody?
Question 21
Draw a simple diagram using
words and arrows to
illustrate the relationship
between the following:
DNA, protein, mRNA,
transcription, and
translation
Question 22
Suppose that a cell has four
chromosomes – a version of
chromosome 1 from each parent, and a
version of chromosome 2 from each
parent. Labelling these
chromosomes clearly, draw:
A) The cell immediately before meiosis I
B) The cells that result from meiosis I
C) The cells that result from meiosis II
Question 23
A) Draw a pedigree for the following family, assuming
that Disco Fever is a heritable disease trait.
• Marta, a girl, has Disco Fever. Her brother does not.
• Marta’s mother, Glenda, does not have Disco Fever.
Her father, Juan, does not have it either.
• Juan’s mother, Michaela, does not have Disco Fever.
Juan’s father, Rubin, does.
B) Is disco fever inherited in a dominant or recessive
manner? Choose one.
C) Is disco fever autosomal or sex-linked? Choose one.
Question 24
Martin has blood type A, and has a
heterozygous genotype. Sara has blood type O.
A) Draw a clearly labeled Punnett square
showing the genotypes of possible offspring if
Martin and Sara have children.
B) What are the possible blood types of the
offspring? What is the probability for each
blood type?
Question 25
A) Which letters represent the four possible
bases in DNA?
B) Which letter represents the base that occurs
in RNA, but NOT in DNA?