Diatoms have a special problem:

A. because their + and - mating strains are nonmotile and have to be dispersed by currents
B. because their heavy siliceous shells impede conjugation
C. because they must await a chemical signal from a fish before they can become mobile and search for mating partners
D. because their two halves fit like the lid and body of a pillbox and on repeated cell divisions the half that is overlapped gets progressively smaller
E. because the gametes experience difficulty in exiting the overlapping halves of their siliceous shells


D. because their two halves fit like the lid and body of a pillbox and on repeated cell divisions the half that is overlapped gets progressively smaller

Biology & Microbiology

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The oxidation of iodine and iodination of the thyroglobulin residues takes place in the presence of

a) Tyrosine Peroxidase b) Hydrogen Peroxidase c) None of the above d) All of the above

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Which of the following is mismatched?

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List 3 differences between plant and animal cells.

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