The nephron begins in the ____

a. glomerulus
b. loop of Henle
c. cortex
d. ureter
e. medulla


ANSWER: c

Biology & Microbiology

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Rett syndrome and homeotic mutations result from mutations in ________.

A) transcription factor genes B) mRNA molecules C) exons D) spliceosomes

Biology & Microbiology

While innate immunity is ancient and universal amongst animals, the adaptive immune system is generally considered to be unique to the vertebrates. However, some researchers have suggested, with much controversy, that invertebrates may have a form of adaptive immunity as well. What sort of evidence would be required to fully demonstrate such a claim? (Check all that apply.)  

_____  B and T cells _____  CD4 receptors _____  efficacy of vaccination _____  highly variable molecules that can bind various antigens _____  identified cells that are necessary to provide acquired immunity _____  immunoglobulin molecules _____  resistance upon second exposure to a pathogen _____  specific resistance to one strain but not another after exposure _____  thymus gland _____  Toll-like receptors

Biology & Microbiology

A tall plant is crossed with a short plant, and the progeny are all intermediate in size between the two parental plants. This could be an example of

A) incomplete dominance. B) polygenic inheritance. C) complete dominance. D) A and B E) B and C

Biology & Microbiology

While both parsimony methods and distance methods can be quite effective in inferring evolutionary history, both use tricks of sorts. Compare the assumptions, shortcomings, and methods of each

What will be an ideal response?

Biology & Microbiology