Some invertebrates do not have special respiratory organs and rely on __________ exchange, diffusion
of gases across the body surface. Fill in the blank(s) with the appropriate word(s).
integumentary
Biology & Microbiology
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The characteristics of a pathogen that determine its virulence include which of the following?
A. Infectivity B. Invasiveness C. Pathogenicity D. All of the choices are correct.
Biology & Microbiology
Platelets function in _____
a. oxygen transport c. thermal regulation b. hemostasis d. both oxygen transport and hemostasis
Biology & Microbiology
Pigments in chloroplasts:
a. melanin b. keratin c. chlorophyll
Biology & Microbiology
Which of the following may form one colony?
A. A short chain of bacteria B. A single bacterial cell C. A small clump of bacteria D. All of the choices are correct.
Biology & Microbiology