Opsonizing antibodies must be against ________ components if they are to effectively stimulate phagocytosis.
A. internal
B. phagocytic
C. protein
D. surface
Answer: D
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There are no cases of -XX or Y individuals, but X individuals do exist. Propose an explanation for this statistic.What will be an ideal response?
What information can be inferred about genes that are located on different chromosomes?
A) These genes are inherited independently of each other. B) Only the dominant alleles of these genes tend to be inherited together. C) These genes are always inherited together. D) These genes are more likely to undergo mutation.
What is the process by which light energy is converted into the stored chemical energy of organic molecules?
a. diffusion b. endocytosis c. respiration d. fermentation e. photosynthesis
Flatworms lack
A) the ability to move. B) a respiratory system. C) a reproductive system. D) a digestive cavity. E) a nervous system.