Which of the following animal groups is entirely aquatic?

A) Mollusca
B) Crustacea
C) Echinodermata
D) Nematoda
E) Platyhelminthes


Answer: C

Biology & Microbiology

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In complementary base pairing of DNA, adenine pairs with ________ (or ________ in RNA) and cytosine always pairs with ________

A) guanine / uracil / thymine B) uracil / thymine / guanine C) thymine / guanine / uracil D) thymine / uracil / guanine

Biology & Microbiology

Based on the energy and carbon sources of humans, how would humans be classified?

A. as chemoautotrophs B. as chemoheterotrophs C. as photoheterotrophs D. as photoautotrophs

Biology & Microbiology

All the populations of different organisms that live in the same place form a(n) ____

a. ecosystem b. community c. biosphere d. organ e. population

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ADH and oxytocin are produced by neurosecretory cells of the ________; however, they are stored in and released from the ________

Fill in the blank(s) with correct word

Biology & Microbiology