When the death of species is less imminent, but the population of a particular species is quite small, it is defined asbeing:a

extinct.
b. extant.
c. endangered.
d. threatened.
e. endemic.


d

Biology & Microbiology

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Herpesviruses can cause all of the following diseases in humans EXCEPT

A) cancer. B) chicken pox. C) cold sores. D) spongiform encephalopathy.

Biology & Microbiology

Which of the following lists the correct order of tracheal system structures, from most external to most

internal?

a. spiracles, tracheae, tracheal branches, tracheoles b. tracheoles, tracheae, tracheal branches, spiracles c. tracheoles, tracheal branches, tracheae, spiracles d. spiracles, tracheal branches, tracheae, tracheoles e. spiracles, tracheoles, tracheae, tracheal branches

Biology & Microbiology

Which scientist(s) discovered the basis for the base-pair rule, which states that the amounts of thymine and adenine are

always equal in all DNA molecules, as are the amounts of cytosine and guanine?

a. Watson and Crick b. Beadles c. Chargaff d. Franklin e. Pauling

Biology & Microbiology

The portion of the body fluid contained in cells is

a. interstitial fluid. b. plasma. c. intracellular fluid. d. extracellular fluid.

Biology & Microbiology