List the three meninges in order from the surface of the brain to the inside of the skull.
What will be an ideal response?
Pia mater, arachnoid mater, and dura mater.
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Males of many marsupial species have forked penises that are incompatible with the anatomy of female placental mammals. What type of isolating mechanism does this represent?
A. ecological isolation B. temporal isolation C. mechanical incompatibility D. hybrid sterility E. prevention of gamete fusion Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about reproductive isolation? 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?
If the wild type DNA sequence reads THE CAT ATE THE BIG RAT, what type of mutation would change the sequence to THE CAT ATA ETH EBI GRA T?
A. Missense B. Deletion C. Insertion D. Nonsense E. Silent
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).
The difference between T cell activation by normal antigens and T cell activation by superantigens is that superantigens
A) suppress cytokine release. B) are not processed and presented by APCs. C) are not processed and presented by APCs and cause nonspecific activation of many T cells at once, including those that would not normally recognize the antigen. D) cause nonspecific activation of many T cells at once, including those that would not normally recognize the antigen and suppress cytokine release. E) cause nonspecific activation of many T cells at once, including those that would not normally recognize the antigen.