PURDUE BIOL 203 EXAM 1 COMPLETE
50 QUESTIONS AND DETAILED
CORRECT ANSWERS| A+ GRADE
VERIFIED ANSWERS
A protein is observed to denature in solutions at or below
a pH of 6.0. At which of the following hydrogen ion
concentrations (g/L) would this protein be safe from
denaturation?
a. 0.00001
b. 0.0001
c. 0.001
d. 0.00000001 Correct Answer d. 0.00000001
Which is wrong?
a. transcription occurs in the nucleus
b. newly synthesized proteins are correctly folded by
proteasomes
c. mRNA leaves the nucleus via nuclear pores
d. DNA profiling can involve detecting the number of short
tandemrepeats in DNA samples Correct Answer b. newly
synthesized proteins are correctly folded by proteasomes
Collagen IV is most likely to be found in
a. most ligaments
b. basement membranes
c. tendons
d. areolar connective tissue Correct Answer b. basement
membranes
, In a newborn infant exposed to a cold environment
a. blood vessels in the skin dilate
b. apocrine sweat glands become active
c. there is increased blood flow through the epidermis
d. thermogenin in brown fat uncouples ATP production
Correct Answer d. thermogenin in brown fat uncouples
ATP production
During interphase, DNA must be accurately replicated
because
a. in the next cell division, a faithful copy must be passed
on to each of the daughter cells
b. one copy must be transferred from the nucleus to the
cytoplasm
c. a backup sequence is needed to guard against
mutations
d. cell cycle checkpoints are blocked if only a single copy
of DNA is present Correct Answer a. in the next cell
division, a faithful copy must be passed on to each of the
daughter cells
When 1 molecule of glucose is metabolized, 4 carbons
appear as carbon dioxide in the Krebs cycle, and the other
two appear as carbon dioxide when
a. glucose is converted to pyruvate
b. oxaloacetic acid is converted to citric acid
c. acetyl-CoA is formed from pyruvate
d. protons couple electron flow to ATP synthesis Correct
Answer c. acetyl-CoA is formed from pyruvate
50 QUESTIONS AND DETAILED
CORRECT ANSWERS| A+ GRADE
VERIFIED ANSWERS
A protein is observed to denature in solutions at or below
a pH of 6.0. At which of the following hydrogen ion
concentrations (g/L) would this protein be safe from
denaturation?
a. 0.00001
b. 0.0001
c. 0.001
d. 0.00000001 Correct Answer d. 0.00000001
Which is wrong?
a. transcription occurs in the nucleus
b. newly synthesized proteins are correctly folded by
proteasomes
c. mRNA leaves the nucleus via nuclear pores
d. DNA profiling can involve detecting the number of short
tandemrepeats in DNA samples Correct Answer b. newly
synthesized proteins are correctly folded by proteasomes
Collagen IV is most likely to be found in
a. most ligaments
b. basement membranes
c. tendons
d. areolar connective tissue Correct Answer b. basement
membranes
, In a newborn infant exposed to a cold environment
a. blood vessels in the skin dilate
b. apocrine sweat glands become active
c. there is increased blood flow through the epidermis
d. thermogenin in brown fat uncouples ATP production
Correct Answer d. thermogenin in brown fat uncouples
ATP production
During interphase, DNA must be accurately replicated
because
a. in the next cell division, a faithful copy must be passed
on to each of the daughter cells
b. one copy must be transferred from the nucleus to the
cytoplasm
c. a backup sequence is needed to guard against
mutations
d. cell cycle checkpoints are blocked if only a single copy
of DNA is present Correct Answer a. in the next cell
division, a faithful copy must be passed on to each of the
daughter cells
When 1 molecule of glucose is metabolized, 4 carbons
appear as carbon dioxide in the Krebs cycle, and the other
two appear as carbon dioxide when
a. glucose is converted to pyruvate
b. oxaloacetic acid is converted to citric acid
c. acetyl-CoA is formed from pyruvate
d. protons couple electron flow to ATP synthesis Correct
Answer c. acetyl-CoA is formed from pyruvate
