How do phagocytes interact speedily and effectively with pathogens?
What will be an ideal response?
Answer: Phagocytes have evolved specialized molecules called pattern recognition receptors (PRR) that interact directly with specific pathogen-associated molecular patterns (PAMPs) to activate these pathogens to ingest and destroy the targeted pathogens by phagocytosis.
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The breast cancer gene BRCA1 has a very similar sequence in humans, mice, and gorillas, due to its origination in a common ancestor. The BRCA1 genes in these species are examples of __________________.
A. orthologs B. paralogs C. polyploidy D. synteny Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about homology? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following lists of ear structures are all membranous structures?
A. ossicles, tympanic membrane, oval window, otoliths B. malleus, incus, stapes C. tympanic membrane, oval window, stapes D. tympanic membrane, oval window, round window E. cochlea, ampulla
Which tissue layer do triploblastic animals have that diploblastic animals do not?
a) endoderm b) mesoderm c) ectoderm
Transfer of genetic materials involving the so called "jumping genes"
A. Transduction B. Transformation C. Conjugation D. Transposition