The respiratory pigment you would find in a blue crab or octopus is

A. hemocyanin.
B. hemoglobin.
C. hemophilin.
D. ferritin.
E. calmodulin.


A. hemocyanin.

Biology & Microbiology

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There are numerous fish genera that have individuals that can change their sex during their lifetime. What is this called?  

A.  sequential hermaphroditism B.  sequential sex determination C.  sequential parthenogenesis D.  sequential production of gametes E.  sequential fertilization

Biology & Microbiology

___ cells are required for almost all parts of the innate and adaptive immune responses to function properly.

What will be an ideal response?

Biology & Microbiology

Which one of the following best describes the proper sequence of steps involved in the scientific method? a. state hypothesis b. observe c. experiment d. support or disprove hypothesis e. form a prediction

A) b, a, d, e, c B) a, b, c, d, e C) b, a, e, c, d D) a, b, c, e, d E) e, b, a, c, d

Biology & Microbiology

First part of the large intestine___________________

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

Biology & Microbiology