Olfaction is the sense of

A. smell.
B. hearing.
C. taste.
D. vision.
E. touch.


A. smell.

Biology & Microbiology

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The receptors for a group of peptide signaling molecules known as growth factors are typically ____

a. receptor tyrosine kinases b. cyclic AMP c. neurotransmitters d. G protein-linked receptors e. ligand-gated ion channels

Biology & Microbiology

Which of the following choices represents an informal grouping of anaerobic chemoautotrophs that form ATP by removing electrons from hydrogen gas or acetate?

a. extreme thermophiles b. extreme halophiles c. acidophiles d. methanogens

Biology & Microbiology

Which type of plant hormone has been shown to both promote pollen tube elongation and inhibit root

elongation?

a. jasmonates b. ethylene c. brassinosteroids d. salicylic acid e. oligosaccharins

Biology & Microbiology

What does the tympanic membrane function for?

What will be an ideal response?

Biology & Microbiology