1|Page
VAN DYKEN BIO 150 NEWEST ACTUAL EXAM 2 ||
MOST RECENT EXAM ACTUAL COMPLETE REAL
VERIFIED EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+ | GUARANTEED SUCCESS!! NEWEST EXAM!!!
Misfolding of polypeptides is a serious problem in cells.
Which of the following diseases are associated with an
accumulation of misfolded polypeptides? - Answer-
Alzheimer's and Parkinson's
When nucleotides polymerize to form a nucleic acid,
_____ - Answer-a covalent bond forms between the sugar
of one nucleotide and the phosphate of a second
Which of the following statements about the 5′ end of a
polynucleotide strand of RNA is correct? - Answer-It has a
phosphate group attached to the number 5 carbon of
ribose.
Which of the following is a characteristic feature of
anabolic pathways? - Answer-They consume energy to
build polymers from monomers
,2|Page
Which of the following statements best describes one
major difference between prokaryotic cells and eukaryotic
cells? - Answer-Eukaryotic cells have membrane-bound
organelles, while prokaryotic cells do not
Eukaryotes are able to overcome the limits to maximum
cell size because they evolved: - Answer-A. Membrane-
bound organelles that decrease the volume of chemical
reactions and therefore overcome diffusion limitation.
B. Mitochondria that produce ATP intracellularly and
therefore overcome the SA:V ratio constraint experienced
by prokaryotes.
The parts of the amino acids AA1 and AA2 that are
involved in the formation of a peptide bond, AA1-AA2, are:
- Answer-carboxyl group of AA1 and amino group of AA2
Which part of an amino acid gives it its unique identity? -
Answer-the components of its side chain
Ovalbumin, the egg white protein is denatured in
scrambled egg. Which of the following is NOT affected? -
Answer-primary structure of ovalbumin
,3|Page
An animal cell that lacks carbohydrates on the external
surface of its plasma membrane would likely be impaired
in which of the following functions? - Answer-cell-cell
recognition
Tay-Sachs disease is a human genetic disorder that
results in cellular accumulation of very large, complex,
undigested lipids. Which of the following organelles is
most likely defective in Tay-Sachs disease? - Answer-the
lysosome
A cell with a predominance of rough endoplasmic
reticulum is most likely involved in which of the following
processes? - Answer-producing large quantities of
proteins for secretion
Red tide is caused by the algae Karenia brevis. This algae
produces a neurotoxin called "Brevetoxin" that can
accumulate in seafood leading to "paralytic shellfish
poisoning" in people who eat contaminated seafood.
Brevetoxin acts as an allosteric inhibitor of voltage-gated
sodium channels. Brevetoxin therefore alters the function
of these channel proteins by __ - Answer-changing the 3-
D shape (i.e., the "conformation") of the protein.
, 4|Page
Catabolic reactions are spontaneous and release energy
because ________ - Answer-ΔG < 0
Motor proteins provide for molecular motion in cells by
interacting with which of the following cellular structures? -
Answer-components of the cytoskeleton
Which of the following terms best describes a chemical
reaction for which ΔG is positive? - Answer-
nonspontaneous
Active transport always involves which type of membrane
protein - Answer-Carrier protein
Which of the following statements best explains the
observation that proton pumps are used by organisms in
every domain of life? - Answer-Proton gradients across a
membrane were used by cells that were the common
ancestor of all three domains of life.
VAN DYKEN BIO 150 NEWEST ACTUAL EXAM 2 ||
MOST RECENT EXAM ACTUAL COMPLETE REAL
VERIFIED EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+ | GUARANTEED SUCCESS!! NEWEST EXAM!!!
Misfolding of polypeptides is a serious problem in cells.
Which of the following diseases are associated with an
accumulation of misfolded polypeptides? - Answer-
Alzheimer's and Parkinson's
When nucleotides polymerize to form a nucleic acid,
_____ - Answer-a covalent bond forms between the sugar
of one nucleotide and the phosphate of a second
Which of the following statements about the 5′ end of a
polynucleotide strand of RNA is correct? - Answer-It has a
phosphate group attached to the number 5 carbon of
ribose.
Which of the following is a characteristic feature of
anabolic pathways? - Answer-They consume energy to
build polymers from monomers
,2|Page
Which of the following statements best describes one
major difference between prokaryotic cells and eukaryotic
cells? - Answer-Eukaryotic cells have membrane-bound
organelles, while prokaryotic cells do not
Eukaryotes are able to overcome the limits to maximum
cell size because they evolved: - Answer-A. Membrane-
bound organelles that decrease the volume of chemical
reactions and therefore overcome diffusion limitation.
B. Mitochondria that produce ATP intracellularly and
therefore overcome the SA:V ratio constraint experienced
by prokaryotes.
The parts of the amino acids AA1 and AA2 that are
involved in the formation of a peptide bond, AA1-AA2, are:
- Answer-carboxyl group of AA1 and amino group of AA2
Which part of an amino acid gives it its unique identity? -
Answer-the components of its side chain
Ovalbumin, the egg white protein is denatured in
scrambled egg. Which of the following is NOT affected? -
Answer-primary structure of ovalbumin
,3|Page
An animal cell that lacks carbohydrates on the external
surface of its plasma membrane would likely be impaired
in which of the following functions? - Answer-cell-cell
recognition
Tay-Sachs disease is a human genetic disorder that
results in cellular accumulation of very large, complex,
undigested lipids. Which of the following organelles is
most likely defective in Tay-Sachs disease? - Answer-the
lysosome
A cell with a predominance of rough endoplasmic
reticulum is most likely involved in which of the following
processes? - Answer-producing large quantities of
proteins for secretion
Red tide is caused by the algae Karenia brevis. This algae
produces a neurotoxin called "Brevetoxin" that can
accumulate in seafood leading to "paralytic shellfish
poisoning" in people who eat contaminated seafood.
Brevetoxin acts as an allosteric inhibitor of voltage-gated
sodium channels. Brevetoxin therefore alters the function
of these channel proteins by __ - Answer-changing the 3-
D shape (i.e., the "conformation") of the protein.
, 4|Page
Catabolic reactions are spontaneous and release energy
because ________ - Answer-ΔG < 0
Motor proteins provide for molecular motion in cells by
interacting with which of the following cellular structures? -
Answer-components of the cytoskeleton
Which of the following terms best describes a chemical
reaction for which ΔG is positive? - Answer-
nonspontaneous
Active transport always involves which type of membrane
protein - Answer-Carrier protein
Which of the following statements best explains the
observation that proton pumps are used by organisms in
every domain of life? - Answer-Proton gradients across a
membrane were used by cells that were the common
ancestor of all three domains of life.
