The same basic array of bones is modified to give rise to the wing of a bat and the fin of a porpoise. Such anatomical structures are called:

A. uniform.
B. inherited.
C. homologous.
D. analogous.
E. evolutionary modifications.


C

Biology & Microbiology

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The ____________ gland in the neck produces several important hormones, including thyroxine, triiodothyronine, and calcitonin.

Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Many bacterial pathogens can resist the action of penicillin by

A) Inactivating it with the enzyme penicillinase B) Pumping it out with efflux pumps C) Preventing the entry into the cell D) Using an alternate metabolic pathway drug

Biology & Microbiology

Membrane lipids are capable of many different types of movement. Which of these does not occur spontaneously in biological membranes?

a. switching between lipid layers b. lateral movement c. rotation d. flexing of hydrocarbon chains

Biology & Microbiology

Neurons that carry messages from the CNS to effectors are

(a) sensory. (b) motor. (c) interneurons. (d) both a and b.

Biology & Microbiology