[USABO] Chapter 11; Cell
Communication Exam Questions &
Answers (Grade A+)
adenylyl cyclase -
correct answer ✅An enzyme that converts ATP to cyclic AMP in
response to a signal.
amplification -
correct answer ✅The strengthening of stimulus energy during
transduction.
apoptosis -
correct answer ✅A program of controlled cell suicide, which is
brought about by signals that trigger the activation of a cascade of
suicide proteins in the cell destined to die.
biofilm -
correct answer ✅A surface-coating colony of one or more species
of prokaryotes that engage in metabolic cooperation.
cyclic AMP (cAMP) -
correct answer ✅Cyclic adenosine monophosphate, a ring-shaped
molecule made from ATP that is a common intracellular signaling
molecule (second messenger) in eukaryotic cells. It is also a
regulator of some bacterial operons.
, [USABO] Chapter 11; Cell
Communication Exam Questions &
Answers (Grade A+)
cytoplasm -
correct answer ✅The contents of the cell, exclusive of the nucleus
and bounded by the plasma membrane.
diacylglycerol (DAG) -
correct answer ✅A second messenger produced by the cleavage
of a certain kind of phospholipid in the plasma membrane.
epinephrine -
correct answer ✅A catecholamine that, when secreted as a
hormone by the adrenal medulla, mediates "fight-or-flight"
responses to short-term stresses; also released by some neurons as
a neurotransmitter; also known as adrenaline.
G protein -
correct answer ✅A GTP-binding protein that relays signals from a
plasma membrane signal receptor, known as a G protein-coupled
receptor, to other signal transduction proteins inside the cell.
Communication Exam Questions &
Answers (Grade A+)
adenylyl cyclase -
correct answer ✅An enzyme that converts ATP to cyclic AMP in
response to a signal.
amplification -
correct answer ✅The strengthening of stimulus energy during
transduction.
apoptosis -
correct answer ✅A program of controlled cell suicide, which is
brought about by signals that trigger the activation of a cascade of
suicide proteins in the cell destined to die.
biofilm -
correct answer ✅A surface-coating colony of one or more species
of prokaryotes that engage in metabolic cooperation.
cyclic AMP (cAMP) -
correct answer ✅Cyclic adenosine monophosphate, a ring-shaped
molecule made from ATP that is a common intracellular signaling
molecule (second messenger) in eukaryotic cells. It is also a
regulator of some bacterial operons.
, [USABO] Chapter 11; Cell
Communication Exam Questions &
Answers (Grade A+)
cytoplasm -
correct answer ✅The contents of the cell, exclusive of the nucleus
and bounded by the plasma membrane.
diacylglycerol (DAG) -
correct answer ✅A second messenger produced by the cleavage
of a certain kind of phospholipid in the plasma membrane.
epinephrine -
correct answer ✅A catecholamine that, when secreted as a
hormone by the adrenal medulla, mediates "fight-or-flight"
responses to short-term stresses; also released by some neurons as
a neurotransmitter; also known as adrenaline.
G protein -
correct answer ✅A GTP-binding protein that relays signals from a
plasma membrane signal receptor, known as a G protein-coupled
receptor, to other signal transduction proteins inside the cell.
