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
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Bi 10, November 1, 2013
Which of the following occurs in all living organisms? (Choose only one.)
Cancer results from a loss of control over... (choose only one)
During the light reactions of photosynthesis, which of the following does NOT occur?
Energy from sunlight is captured by chlorophyll.
NADPH is produced from NADP+.
ATP is produced from ADP.
Carbon dioxide is converted into sugar.
Oxygen is released as waste.
Which of the following is NOTa similarity between photosynthesis and respiration?
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?
Which of the following organisms can perform photosynthesis unaided? Choose all that apply.
Which of the following responses is correctly ranked from smallest to largest?
Which of the following statements about meiosis is true?
The second division of meiosis separates homologous chromosomes.
The first division of meiosis separates sister chromatids.
Eggs and sperm are produced via meiosis.
Meiosis only occurs in prokaryotes.
A somatic mutation is a mutation during meiosis.
Consider the Punnett square below. The circled letters represent the possible products of _______ from each parent.
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?
There would be a frame shift, since codons are read in sets of 3 bases, and 25 isn’t divisible by 3.
There would be a nonsense mutation, since the linker would need to contain a stop codon.
There would be a missense mutation, since the second amino acid in the linker would be misread.
There would be a deletion, since codons are read in sets of two bases, and 25 isn’t divisible by 2.
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.
If a person has curly hair, that is an example of a…
None of the above
During the HIV life cycle, reverse transcriptase copies…
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?
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.
Draw a simple diagram using words and arrows to illustrate the relationship between the following:
DNA, protein, mRNA, transcription, and translation
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) Draw a pedigree for the following family, assuming that Disco Fever is a heritable disease trait.
B) Is disco fever inherited in a dominant or recessive manner? Choose one.
C) Is disco fever autosomalor sex-linked? Choose one.
Martin has blood type A, and has a heterozygous genotype. Sara has blood type O.
A) Which letters represent the four possible bases in DNA?
B) Which letter represents the base that occurs in RNA, but NOTin DNA?