Which of the following cell types is long lived and continues to produce antibody?

a. cytotoxic T cells
b. memory B cells
c. T helper cells
d. plasma cells


e. macrophages


b

Biology & Microbiology

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Single-stranded miRNA targets the RISC complex to specific mRNA targets that contain sequences complementary to the miRNA

A. true B. false

Biology & Microbiology

What would be strong evidence to suggest a protist is phototrophic?  

A.  Many lysosomes B.  Locomotion via several flagella C.  The presence of chloroplasts D.  Silicon dioxide cell walls E.  A benthic lifestyle Clarify Question · What is the key concept addressed by the question? · What type of thinking is required?   Gather Content · What do you already know about the nutritional strategies of protists? How does it relate to the question? · 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

________, a viral enzyme, is used to convert single-stranded RNA into ___________ for cloning. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

As the concentration of substrate increases, the activity of the enzyme decreases

Indicate whether the statement is true or false

Biology & Microbiology