The diagram shows the rate of diffusion into a cell using carrier proteins.Carrier proteins are saturated at which point?

A. 1
B. 2
C. 3
D. 4


Answer: D

Biology & Microbiology

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You dissect the brain of a mutant mouse and find that parts of the "white matter" look gray. What is a likely cause?  

A.  defects in myelination B.  peripheral nerve damage C.  oversized dendrites D.  excess myelination E.  excess neuronal proliferation Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content/Choose Answer · What do you already know about white matter? How does it relate to the question? Consider Alternatives · What other information is related to the question? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Which type of tissue produces a matrix that surrounds and supports cells?

a. epithelial b. connective c. muscle d. nerve e. endocrine

Biology & Microbiology

Unicellular fungi are called _________.

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

Biology & Microbiology

A lichen is made up of a(n) ________ and a ________.

A. alga; fungus B. fungus; plant C. animal; fungus D. animal; protist

Biology & Microbiology