B cells develop and mature in the __________.
What will be an ideal response?
bone marrow
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Diffusion is the movement of atoms or molecules from regions of high concentration to regions of low concentration
a. True b. False
Which of the following disorders results from an adult getting an insufficient amount of vitamin D, which results in demineralized, brittle bones?
What will be an ideal response?
Which of the following is incorrect about archaeal translation?
A. Archaeal translation uses no chaperone proteins for folding new polypeptides. B. Archaeal translation uses 70S ribosomes, similar to bacterial ribosomes. C. Archaeal translation may recognize ribosome binding sites homologous to bacterial Shine-Dalgarno sequences. D. Archaeal translation is coupled to transcription, similar to bacterial processes.
Two populations of birds with somewhat different coloration live on opposite sides of a peninsula. The habitat between the populations is not suitable for these birds. When birds from the two populations are brought together, they produce young whose appearance is intermediate between the two parents. These offspring will breed with each other or with birds from either parent population, and all offspring of these pairings appear intermediate to various degrees. The two populations are _____.
A. different subspecies, under the morphological species concept B. different species, under the biological species concept C. different species, under the phylogenetic species concept