Which of the following arthropod groups is almost exclusively aquatic in habitat?

A. Arachnida
B. Crustacea
C. Insecta
D. Chilopoda
E. Diplopoda


B

Biology & Microbiology

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Eukaryotic cell membranes use many sterol molecules for construction, which contrasts with archaeal membranes that utilize ________.

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

Biology & Microbiology

The atomic number of an element is equal to the number of:

A. protons plus neutrons. B. neutrons plus electrons. C. neutrons only. D. protons only. E. protons plus electrons.

Biology & Microbiology

What are the correct order of the basic steps of the scientific method?

a. observe --> hypothesize--> predict --> experiment --> interpret b. predict --> hypothesize --> experiment --> observe --> interpret

c. hypothesize --> observe --> predict --> experiment --> interpret d. observe --> predict --> hypothesize --> experiment --> interpret e. hypothesize --> predict --> experiment --> observe --> interpret

Biology & Microbiology

The discovery of a coelacanth in South Africa in 1938 was surprising to biologists because it

A) was thought to be extinct. B) was a newly evolved species. C) represents a transition between two major groups of fishes. D) is the first species to have made the transition to land. E) has not evolved for more than 80 million years.

Biology & Microbiology