Get 2 days of premium access
Study Guides (380,000)
US (220,000)
UC-Irvine (3,000)
BIO SCI (300)
All (10)
Final

BIO SCI 93 Study Guide - Final Guide: Tumor Suppressor Gene, Isotopes Of Nitrogen, Tomato JuiceExam


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

This preview shows pages 1-3. to view the full 10 pages of the document.
Final Exam Section E
1) Cyclin proteins begin to be synthesized during which phase of the cell cycle?
A) M
B) S
C) G1
D) G2
E) G0
2) A virus that has the ability to turn off a tumor suppressor gene
A) will inhibit viral reproduction
B) will prevent cell cycle inhibition
C) will cause a cell to enter G0
D) will cause flu like symptoms
3) Which of the following solutions has the greatest concentration of hydrogen ions [H+]?
A) gastric juice at pH 2
B) vinegar at pH 3
C) tomato juice at pH 4
D) black coffee at pH 5
E) household bleach at pH 12
4) Which functional group is most likely to be responsible for an organic molecule
behaving as a base?
A) hydroxyl
B) carbonyl
C) carboxyl
D) amino
E) phosphate
5) In addition to ATP, what are the end products of glycolysis?
A) CO2 and H2O
B) CO2 and pyruvate
C) NADH and pyruvate
D) CO2 and NADH
E) H2O, FADH2, and citrate
6) When oxygen is released as a result of photosynthesis, it is a by-product of which of
the following?
A) reducing NADP+
B) splitting the water molecules
C) chemiosmosis
D) the electron transfer system of photosystem I
E) the electron transfer system of photosystem II

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

7) How do the daughter cells at the end of mitosis and cytokinesis compare with their
parent cell when it was in G1 of the cell cycle?
A) The daughter cells have half the amount of cytoplasm and half the amount of
DNA.
B) The daughter cells have half the number of chromosomes and half the amount
of DNA.
C) The daughter cells have the same number of chromosomes and half the amount
of DNA.
D) The daughter cells have the same number of chromosomes and the same
amount of DNA.
E) The daughter cells have the same number of chromosomes and twice the
amount of DNA.
8) You have in your possession a microscope slide with meiotic cells on it and a light
microscope. What would you look for if you wanted to identify metaphase I cells on the
slide?
A) A visible nuclear envelope
B) Separated sister chromatids at each pole of the cell
C) Tetrads lined up at the center of the cell
D) A synaptonemal complex
E) A cleavage furrow
9) Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long
tails (t). What fraction of the progeny of the cross BbTt × BBtt will have black fur and
long tails?
A) 1/16
B) 3/16
C) 3/8
D) 1/2
E) 9/16
10) Bacteria grown in 15N are placed in 14N media. After one round of replication,
DNA is isolated and centrifuged in a CsCl gradient. Which of the following is expected?
a. Two bands are present, one with the same density as 15N DNA and one that is
halfway between the 15N and the 14N density.
b. One band is present, halfway between the 15N and the 14N band.
c. One band is present, three quarters of the way toward the 14N band.
d. Two bands are present, one with the same density as the 15N band and one with
the same density as the 14N band.
e. One band is present, and it has the same density as the 14N DNA.
11) In the Avery/ Griffith experiments, how do heat killed, smooth S. pneumonia turn
rough S. pneumonia into pathogenic, smooth S. pneumonia?

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

a. DNA is transferred from the smooth bacterial cells to the rough cells.
b. Heat killed proteins enter the rough cell.
c. Transcription is repressed in rough cells.
d. DNA from heat killed cells supresses the mouse immune system.
e. Rough cells are unable to express DNA from other bacterial cells.
12) Which of the following statements on the structure of DNA is FALSE?
a. X-ray crystallography data were used to determine helical structure
b. Chargoff’s ratios are explained by purine-pyrimidine base pairing
c. The center of the double helix contains pairs of nitrogenous bases
d. The backbone of the helix is composed of sugar-phosphate groups
e. Complementary base pairing is mediated by phosphodiester bonds.
13) Which of the following is true for BOTH prokaryotic and eukaryotic gene
expression?
a. DNA is transcribed in the nucleus.
b. mRNA is translated on polyribosomes as it is being translated.
c. Transcription factors bind to DNA at the TATA box.
d. Introns are removed from the mRNA.
e. RNA polymerase adds nucleotides to the 3’ end of the transcript.
You're Reading a Preview

Unlock to view full version