UKY BIO 152 EXAM 2 WITH CORRECT
ANSWERS 2025
Which of the following represents a signal transduction step in a
receptor kinase pathway?
-the ligand binds to its receptor
-the cell responds by producing more enzymes
-the cell responds by opening a sodium channel
-a secondary messenger in the cytoplasm is activated
-GTP binds to a G protein
-the receptor changes shape correct answers >> A
secondary messenger in the cytoplasm is activated
All of the following are true of G protein-coupled receptor
pathways, except:
-the pathway can include secondary messengers like cAMP
-the signaling pathway can include kinases
-the pathway uses GTP as an energy source
-the pathway is used by hydrophilic signals to induce a response
from the target cell
-the receptor is a G protein correct answers >> The receptor
is a G protein
A target cell removes the receptors for insulin from its plasma
membrane. In response, the pancreas produces and releases
more insulin into the blood. How will the target cell responds to
the increased concentration of insulin moving around in the body?
, -it will activate intracellular receptor pathways
-it will not respond to the insulin
-it will activate receptor kinase pathways
-it will activate G protein-coupled receptor pathways correct
answers >> It will not respond to the insulin
Which statement accurately describes cell receptors?
-each cell has thousands of different receptors both along its
plasma membrane and at various locations throughout the inside
of the cell
-because there are so many different possible signals, each target
cell has only a single receptor available, per type of signal
(quantity)
-once activated, a receptor must be destroyed to deactivate it
-only receptors located in the plasma membrane can receive
signals from other cells correct answers >> Each cell has
thousands of different receptors both along its plasma membrane
and at various locations throughout the inside of the cell
Phosphorylation correct answers >> The process of
transferring a phosphate group from one molecule to a different
molecule
Kinases correct answers >> A group of enzymes known for
their ability to transfer phosphates during chemical reactions
Ligand correct answers >> The signal for a specific receptor
ANSWERS 2025
Which of the following represents a signal transduction step in a
receptor kinase pathway?
-the ligand binds to its receptor
-the cell responds by producing more enzymes
-the cell responds by opening a sodium channel
-a secondary messenger in the cytoplasm is activated
-GTP binds to a G protein
-the receptor changes shape correct answers >> A
secondary messenger in the cytoplasm is activated
All of the following are true of G protein-coupled receptor
pathways, except:
-the pathway can include secondary messengers like cAMP
-the signaling pathway can include kinases
-the pathway uses GTP as an energy source
-the pathway is used by hydrophilic signals to induce a response
from the target cell
-the receptor is a G protein correct answers >> The receptor
is a G protein
A target cell removes the receptors for insulin from its plasma
membrane. In response, the pancreas produces and releases
more insulin into the blood. How will the target cell responds to
the increased concentration of insulin moving around in the body?
, -it will activate intracellular receptor pathways
-it will not respond to the insulin
-it will activate receptor kinase pathways
-it will activate G protein-coupled receptor pathways correct
answers >> It will not respond to the insulin
Which statement accurately describes cell receptors?
-each cell has thousands of different receptors both along its
plasma membrane and at various locations throughout the inside
of the cell
-because there are so many different possible signals, each target
cell has only a single receptor available, per type of signal
(quantity)
-once activated, a receptor must be destroyed to deactivate it
-only receptors located in the plasma membrane can receive
signals from other cells correct answers >> Each cell has
thousands of different receptors both along its plasma membrane
and at various locations throughout the inside of the cell
Phosphorylation correct answers >> The process of
transferring a phosphate group from one molecule to a different
molecule
Kinases correct answers >> A group of enzymes known for
their ability to transfer phosphates during chemical reactions
Ligand correct answers >> The signal for a specific receptor
