Osteogenic layer

What will be an ideal response?


Inner layer of periosteum touching bone and containing primitive osteogenic stem cells that give rise to all bone cells.

Biology & Microbiology

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The majority of vascular plants possess or are

characterized by a. leaves. b. dependent gametophytes. c. seeds. d. microspores and megaspores. e. all of these.

Biology & Microbiology

Complement proteins are part of ________ immunity.

A. adaptive B. innate

Biology & Microbiology

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.

Biology & Microbiology

Which of the following does not account for the small size of cells?

A) the distance from the cell interior to the cel surface B) the surface area/volume ratio C) the length/surface area ratio D) the number of mRNAs that can be produced by the nucleus E) the rate of diffusion

Biology & Microbiology