Which structure is unique to osteichthyes?

a. swim bladder
b. cartilaginous skeletons
c. lateral line
d. cutaneous respiration


a. swim bladder

Biology & Microbiology

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The type of plant hormone primarily responsible for promoting the formation of lateral roots is/are ____

a. jasmonates b. gibberellins c. auxins d. systemin e. cytokinins

Biology & Microbiology

Nitric oxide (NO) serves as a local signal for vasodilation because it ____

a. is broken down quickly b. dissipates quickly c. recycles rapidly in cells d. counteracts the action of oxygen e. blocks adrenergic receptors

Biology & Microbiology

Inrushing sodium ions trigger the opening of nearby channels and movement of sodium inward at that neighboring section of the membrane. What is occurring?

A) normal resting potential B) neurotransmitter release C) protein movement D) an action potential

Biology & Microbiology

The first sales were probably RNA and protein surrounded by lipid coat

a. true b. false

Biology & Microbiology