Animal A kills animal D for food; animal C lives in animal D but does not harm D; animal B lives on the surface and sucks blood from D. The animal(s) that is/are a parasite on animal D is/are: 

A. A.
B. A and C.
C. B.
D. B and C.


C. B.

Biology & Microbiology

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Can mutation rates evolve in laboratory experiments? Briefly describe an experiment that researchers performed to investigate this, and state whether the mutation rate did evolve, and if so, whether it evolved to become higher or lower

What will be an ideal response?

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How do enveloped animal viruses exit their host?

A) Bursting the host cell B) Endocytosis C) Rupturing virus D) Budding or exocytosis

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