Nematodes 

A. have a pseudocoelom.
B. are bilaterally symmetrical.
C. have a mouth and an anus.
D. All of the above are correct.


D. All of the above are correct.

Biology & Microbiology

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Match the following items with the correct phrases.

_______1. A ____________________ is a membrane-bound vesicle containing only an ingested object. _______2. The directed migration of leukocytes is known as ____________________. _______3. A ____________________ is a membrane-bound vesicle containing an ingested object and digestive enzymes. _______4. ____________________ is an increase in the diameter of blood vessels. _______5. ____________________ is a process by which phagocytosis is facilitated by the deposition of antibodies or complement fragments onto the surface of particles or cells. A. chemotaxis B. opsonization C. phagolysosome D. phagosome E. vasodilation

Biology & Microbiology

Describe the enzymatic digestion that takes place in each structure of the digestive tract

What will be an ideal response?

Biology & Microbiology

There are how many different kinds of RNA

nucleotides? a. 3 b. 4 c. 5 d. 6 e. 12

Biology & Microbiology

The “A” in AIDS stands for ____

a. adaptive b. active c. acquired d. autoimmune e. artificial

Biology & Microbiology