Insects differ from other arthropods because insects

a. Have paired, jointed legs
b. Have ectognathous mouthparts
c. Have a single pair of antennae
d. Mandibles
e. Have tagmata or fused segments


Answer: b. Have ectognathous mouthparts

Biology & Microbiology

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A distinguishing characteristic of actinomycetes that can be used to classify these organisms is the types of sugars found in extracts of the organisms.

Answer the following statement true (T) or false (F)

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Some marine species of cyanobacteria

A. do not have flagella and are, therefore, nonmotile. B. do not have flagella but are, nonetheless, motile by some unknown mechanism. C. do not have flagella but are motile by means of pseudopods. D. have flagella and are, therefore, motile.

Biology & Microbiology

If a clinical laboratory receives a "blind unknown" for proficiency testing (PT), it is most likely sent by which private accrediting agency?

a. CLSI b. National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) c. College of American Pathologists (CAP) d. American Society of Consultant Phar-macists (ASCP)

Biology & Microbiology

The purpose of staining cells on a microscope slide is to ________.

A. secure them to the slide B. observe motility C. kill them D. add contrast to see them better E. enlarge the cells

Biology & Microbiology