A diatom's ________ is a glassy cell wall

a. valve
b. heterokent
c. mastigonemes
d. frustule


d

Biology & Microbiology

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The subunit of clathrin is__________

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

Biology & Microbiology

Which of the following is considered a major category of transmission of disease?

A) Vector transmission B) Contact transmission C) Vehicle transmission D) Contact, vehicle, and vector transmission

Biology & Microbiology

Which of the following parts of a virus is/are not always present?

A. capsid B. envelope C. nucleic acid D. capsomers E. None of these choices are optional parts of a virus.

Biology & Microbiology

Segments of DNA that increase the rate of transcription of certain genes are known as ________

A) introns B) short tandem repeats C) polymerases D) enhancers

Biology & Microbiology