The Enzyme Α Kinase Adds __________ To Proteins.
Question: Lipid-soluble hormones:
Answer: diffuse through the cell membrane.
Question: Once inside the cell, lipid-soluble hormones can:
Answer: bind with a specific receptor molecule inside the cytoplasm or nucleus.
Question: Within the nucleus:
Answer: the receptor-hormone complex binds with a DNA molecule to produce a mRNA molecule.
Question: The ultimate cellular response to a lipid-soluble hormone is the production of proteins.
Answer: true
Question: The mRNA molecule moves from the cytoplasm to the nucleus and binds to a ribosome where it directs the synthesis of specific proteins.
Answer: false
Question: Binding of a first messenger to its receptor triggers a conformational change of the membrane-bound receptor, which ultimately leads to the cell’s response.
Answer: false
Question: First messengers that activate membrane-bound receptors are hydrophobic.
Answer: true
Question: The function of the G protein complex is:
Answer: to dissociate from the activated messenger-receptor complex in order to activate a membrane-bound effector protein.
Question: After a docking protein becomes phosphorylated, it:
Answer: binds and activates other intracellular proteins, which in turn activate one or more signaling pathways within the cell.
Question: When a first messenger binds to and activates a membrane-bound receptor that contains an ion channel:
Answer: there is a change in membrane potential and/or cytosolic calcium.