Recognition proteins on the surface of your

cells are called



a. TCRs.
b. cytokines.
c. MHC markers.
d. complements.
e. PAMPs.


C

Biology & Microbiology

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The most parsimonious inference about the evolution of parental care behavior in crocodilians and

birds is

a. it evolved once in the common ancestor of the two groups. d. it is a learned behavior. b. the derived character state is an apomorphy. e. parental care arose due to coevolution. c. it evolved numerous times within each lineage.

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During clonal selection and antigen binding

A) the B cell interacts with the attached microbe. B) the B cell interacts with a T helper cell. C) the T cell gives off interleukins. D) B cells recognize microbes and their foreign antigens.

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Anoxygenic photosynthesis typically results in the production of (oxygen/sulfur/ammonia) as a waste product

What will be an ideal response?

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A yellow slant and butt in Kligler’s iron agar indicates

a. both glucose and lactose were fermented.
b. H2S was produced.
c. both glucose and lactose were fermented and H2S was produced
d. lactose only was fermented.
e. glucose only was fermented.

Biology & Microbiology