Which of the following is a type of cell communication where the signaling molecule is released by the same cell that responds to the signal?

A. juxtacrine
B. paracrine
C. autocrine
D. endocrine
E. All of these choices are correct.


C

Biology & Microbiology

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Which of the following will always be lost in an energy transfer?

a. Heat energy b. Kinetic energy c. Light energy d. Chemical energy

Biology & Microbiology

ulcer's occur in large intestine and rectum

What will be an ideal response?

Biology & Microbiology

Proteins are three dimensional molecules made of strands of amino acids (imagine a ball of string). There are 20 different amino acids used in proteins found in living organisms. Some of these amino acids are polar and others are nonpolar.  Where would a series of nonpolar amino acids most likely be located in a protein that is found in the cytosol of an animal cell?

A. at the very top of the protein B. on the surface of the protein C. at the very bottom of the protein D. in the interior of the protein

Biology & Microbiology

A flexible, spiral-shaped bacterium is called a

A) spirochete. B) vibrio. C) coccobacillus. D) spirillum. E) sarcina.

Biology & Microbiology