The pH of the stomach is about ________

a. 7
b. 2
c. 11
d. 5


b

Biology & Microbiology

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Identify a sequence that is most likely to be recognized by a restriction enzyme.  

A.  CGATGC B.  CCCTTT C.  TGGCCA D.  TCATCA Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean?   Gather Content · What do you already know about restriction enzymes?   Consider Possibilities · What other information is related to the question? Which information is most useful?   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

The ________ was developed in the late 1920s by Theodore Svedberg. He originally used it to determine the sedimentation rate of proteins.

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

Biology & Microbiology

Secondary messengers are molecules that bind with signal receptors on the plasma membrane of a target cell

1.True 2.False

Biology & Microbiology

The chromosome of a bacterial cell possesses the following genotype with regard to the lac operon: I?O+Z+Y?A?. This bacterial cell would

A) make ?-galactosidase in the presence of lactose. B) make ?-galactosidase independently of lactose. C) make ?-galactosidase and galactoside permease in the presence of lactose. D) make transacetylase in the presence of lactose. E) make no lac gene products.

Biology & Microbiology