BIO 181 Quiz 4 & 5 GCU Questions and
Correct Answers (Verified Answers) | New
2026/27 Update | Graded A+
Quiz 4
What are the two mating types for yeast Saccharomyces cerevisiae - ANSWERS
a and a
What is a signal transduction pathway? - ANSWERS the binding of a mating
factor at the cell surface initiates a series of steps and induces changes in the cells
that lead to cell fusion
what are local regulators? - ANSWERS messenger molecules that travel only
short distances
what do local regulators bind to? - ANSWERS receptors on target cells
what is paracrine signaling? - ANSWERS accomplished with secretion of
chemical regulators that have local effects on neighboring cells (kinda like
localized hormones)
what does paracrine signaling involve? - ANSWERS involves secreting cells
acting on nearby target cells by discharging a local regulator into the extracellular
fluid
, what is synaptic signaling? - ANSWERS a neuron releases neurotransmitters
into a synapse to stimulate an adjacent neuron to fire or a muscle to contract.
where does synaptic signaling occur? - ANSWERS animal nervous system when
a neurotransmitter is released in response to an electric signal
what is endocrine signaling? - ANSWERS hormones released from a cell affect
other cells throughout the body
what is hormonal signaling? - ANSWERS communicating with cells some
distance away
what are the three stages of cell signaling? - ANSWERS reception,
transduction, response
what are he components of a signaling pathway? - ANSWERS cell-impermeant,
cell-permeant, and cell-associated signaling molecules
what is a ligand? - ANSWERS any molecule that binds specifically to a receptor
site of another molecule
what are receptor proteins? - ANSWERS Binding sites for hormones and other
trigger molecules
what are the three types of membrane receptors? - ANSWERS G protein-
coupled receptors
Correct Answers (Verified Answers) | New
2026/27 Update | Graded A+
Quiz 4
What are the two mating types for yeast Saccharomyces cerevisiae - ANSWERS
a and a
What is a signal transduction pathway? - ANSWERS the binding of a mating
factor at the cell surface initiates a series of steps and induces changes in the cells
that lead to cell fusion
what are local regulators? - ANSWERS messenger molecules that travel only
short distances
what do local regulators bind to? - ANSWERS receptors on target cells
what is paracrine signaling? - ANSWERS accomplished with secretion of
chemical regulators that have local effects on neighboring cells (kinda like
localized hormones)
what does paracrine signaling involve? - ANSWERS involves secreting cells
acting on nearby target cells by discharging a local regulator into the extracellular
fluid
, what is synaptic signaling? - ANSWERS a neuron releases neurotransmitters
into a synapse to stimulate an adjacent neuron to fire or a muscle to contract.
where does synaptic signaling occur? - ANSWERS animal nervous system when
a neurotransmitter is released in response to an electric signal
what is endocrine signaling? - ANSWERS hormones released from a cell affect
other cells throughout the body
what is hormonal signaling? - ANSWERS communicating with cells some
distance away
what are the three stages of cell signaling? - ANSWERS reception,
transduction, response
what are he components of a signaling pathway? - ANSWERS cell-impermeant,
cell-permeant, and cell-associated signaling molecules
what is a ligand? - ANSWERS any molecule that binds specifically to a receptor
site of another molecule
what are receptor proteins? - ANSWERS Binding sites for hormones and other
trigger molecules
what are the three types of membrane receptors? - ANSWERS G protein-
coupled receptors
