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Final

BIO SCI 93 Study Guide - Final Guide: Frameshift Mutation, Atp Hydrolysis, Nuclear MembraneExam


Department
Biological Sciences
Course Code
BIO SCI 93
Professor
All
Study Guide
Final

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Section C
EXAM VERSION A
BioSci 93
Final Exam
KEY
December 10, 2012
1. Ensure that you are sitting at your assigned seat.
2. Record your Name and Student ID on the cover of the exam
booklet. Keep your student ID out and visible. We will be checking during
the exam.
3. You must use pencils only; exams completed with pens will not be scored.
4. Write in your name, lecture, exam version AND bubble and write in your student
ID # on the scantron.
5. Select the best answer for each question. Each question is worth 2 points except
question number 1, which is not worth any points but you will likely fail if you get it
wrong.
Acts of dishonesty during the examination will result in disqualification (score of 0
points) and a permanent letter added to your university transcript file.
Name: ___________________________ Student ID Number: _________________________

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1. I am taking exam version
a. A
b. B
2. Action potentials move along axons:
a. more slowly in axons of large than in small diameter.
b. by the direct action of acetylcholine on the axonal membrane.
c. by activating the sodium-potassium "pump" at each point along the axonal membrane.
d. more rapidly in myelinated than in non-myelinated axons.
e. by reversing the concentration gradients for sodium and potassium ions.
3. Why do chromosomes condense during mitosis:
a. to increase their potential energy
b. to provide haploid cell formation
c. to allow chromosomes to move without breaking
d. to allow chromosomes to fit within the nuclear envelope
4. One statement below characterizes what was particularly important to Mendel’s success in
discovering the laws of segregation and independent assortment.
a. Mendel chose pea plant characteristics such as purple flowers, yellow seeds, and round
seeds.
b. Mendel chose pea plant characteristics where one characteristic is dependent on one
gene.
c. Mendel chose pea plant characteristics with codominance relationships.
d. Mendel chose pea plant characteristics where one gene has pleiotropic effects.
e. Mendel chose pea plant characteristics in which environment affects flower color.
5. ATP hydrolysis directly powers the movement of:
a. K+ out of cells.
b. Na+ out of cells.
c. Na+ into cells.
d. Ca++ into cells.
e. Cl- into cells.
6. A frameshift mutation could result from:
a. a base insertion only.
b. a base deletion only.
c. a base substitution only.
d. deletion of three consecutive bases.
e. either an insertion or a deletion of a base.
7. In the cross PpRRYy X ppRryy, what fraction of the offspring will have purple flowers and
round, yellow seeds? P=dominant allele for purple, R=dominant allele for round,
Y=dominant allele for yellow, p=recessive allele for purple, r=recessive allele for round,
y=recessive allele for yellow
a. 1/32
b. 1/4
c. 1/2
d. 3/8
e. 3/4

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8. In the late 1950s, Meselson and Stahl grew bacteria in a medium containing "heavy"
nitrogen (15N) and then transferred them to a medium containing 14N. Which of the results
in the figure above would be expected after one round of DNA replication in the presence of
14N?
a. A
b. B
c. C
d. D
e. E
9. A couple have one child and then three years later have a second child. The probability of
the first child being male is _______. The probability of the second child being male is
_________.
a. 25%, 75%
b. 50%, 50%
c. 75%, 25%
d. 50%, 25%
10. Two alleles of the same gene that contribute to the phenotype in separate and
distinguishable ways is considered what type of inheritance pattern?
a. recessive inheritance
b. epistasis
c. codominance
d. pleiotropy
e. incomplete dominance
11. The transport of membrane-bound proteins in vesicles is dependent on what cellular
structures?
a. Microtubules and motor proteins
b. Actin filaments and microtubules
c. Actin filaments and ribosomes
d. Centrioles and motor proteins
e. Actin filaments and motor proteins
12. Genomic imprinting refers to the ___________________________________ where as barr
body formation refers to ______________________________.
a. silencing of almost all genes on x chromosome; silencing of one allele on x chromosome
b. silencing of one allele of a certain gene; silencing of one allele on x chromosome
c. silencing of almost all genes on an autosome; silencing of one allele on x chromosome
d. expression of one allele of a certain gene; silencing of one allele of a certain gene
e. silencing of one allele of a certain gene; silencing of almost all genes on x chromosome
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