Protein Hormones Are Secreted in a Regulated Manner,through a Mechanism

question 10

Multiple Choice

Protein hormones are secreted in a regulated manner,through a mechanism referred to as:

• A)Stimulus-secretion coupling.
• B)Constitutive secretion.
• C)Endocytosis recycling.
• D)Signal peptidase-induced cleavage.
• E)Membrane shedding.

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Definitions:

Gametophyte

Haploid generation of the alternation-of-generations life cycle of a plant; produces gametes that unite to form a diploid zygote.

Alternation of Generations

A reproductive cycle of certain plants and algae that involves a regular alternation between two distinct forms: the sexual phase (gametophyte) and the asexual phase (sporophyte).

Liverwort

Bryophyte with a lobed or leafy gametophyte and a sporophyte composed of a stalk and capsule.

Protonema

The initial stage in the life cycle of mosses and some algae, characterized by a thread-like chain of cells.