Bio 1404 Exam 2 Jaffe Questions with Solutions
The extracellular matrix is thought to participate in the regulation of animal cell behavior by
communicating information from the outside to the inside of the cell via which of the
following? Correct Ans-Integrins .
Which of the following represents the ΔG of the reaction in the figure above? Correct Ans-
A
Which of the following types of molecules are the major structural components of the cell
membrane? Correct Ans-Phospholipids and cellulose
Glucose cannot diffuse through artificial phospholipid bilayers. The cells lining the small
intestine, however rapidly move large quantities of glucoses from the extracellular space into
their glucose-poor cytoplasm. Using this information, which transport mechanism is most
probably functioning in the intestinal cells? Correct Ans-Paracrine transporrt
Which type of organelle is found in plant cells but not in animal cells? Correct Ans-**None
of these
A) ribosomes
B)endoplasmic reticulum
, Bio 1404 Exam 2 Jaffe Questions with Solutions
C)Nuclei
Which of the following is the greatest advantage of having multiple steps in a transduction
pathway? Correct Ans-Having multiple steps in a pathway requires the least amount of ATP
When protein membrane receptors are activated, what usually happens? Correct Ans-A
change occurs in intracellular ion concentration
Which of the following is a reasonable explanation for why unsaturated fatty acids help keep
any membrane more fluid at lower temperatures ? Correct Ans-The double bonds from
kinks in the fatty acid tails, preventing adjacent lipids from packing tightly .
Ions diffuse across membranes through specific ion channels Correct Ans-Down their
concentration gradients
All of the following are part of a prokaryotic cell except Correct Ans-DNA
The extracellular matrix is thought to participate in the regulation of animal cell behavior by
communicating information from the outside to the inside of the cell via which of the
following? Correct Ans-Integrins .
Which of the following represents the ΔG of the reaction in the figure above? Correct Ans-
A
Which of the following types of molecules are the major structural components of the cell
membrane? Correct Ans-Phospholipids and cellulose
Glucose cannot diffuse through artificial phospholipid bilayers. The cells lining the small
intestine, however rapidly move large quantities of glucoses from the extracellular space into
their glucose-poor cytoplasm. Using this information, which transport mechanism is most
probably functioning in the intestinal cells? Correct Ans-Paracrine transporrt
Which type of organelle is found in plant cells but not in animal cells? Correct Ans-**None
of these
A) ribosomes
B)endoplasmic reticulum
, Bio 1404 Exam 2 Jaffe Questions with Solutions
C)Nuclei
Which of the following is the greatest advantage of having multiple steps in a transduction
pathway? Correct Ans-Having multiple steps in a pathway requires the least amount of ATP
When protein membrane receptors are activated, what usually happens? Correct Ans-A
change occurs in intracellular ion concentration
Which of the following is a reasonable explanation for why unsaturated fatty acids help keep
any membrane more fluid at lower temperatures ? Correct Ans-The double bonds from
kinks in the fatty acid tails, preventing adjacent lipids from packing tightly .
Ions diffuse across membranes through specific ion channels Correct Ans-Down their
concentration gradients
All of the following are part of a prokaryotic cell except Correct Ans-DNA
