What is thought to be the reason for the decline of stromatolites?

a. Coral bleaching

b. Depletion of oxygen levels.
c. Absence of symbiotic mollusks and crustaceans.
d. Competition from seaweeds and sponges.


d

Biology & Microbiology

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Which of the following is not made from long chains of glucose?

A. Glycogen B. Sucrose C. Starch D. Cellulose

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Fleshy fruits with hard seed coats, such as

cherries, are more likely to be dispersed by ____ than by other means. a. wind b. adhering to animal fur c. passing through animal guts d. falling to the ground, rotting, and releasing their seeds e. water currents

Biology & Microbiology

Put the following terms in the correct order from start to finish.

A. chromosome ? gene ? primary transcript ? messenger RNA ? protein ? polypeptide B. gene ? messenger RNA ? primary transcript ? chromosome ? protein ? polypeptide C. chromosome ? gene ? primary transcript ? messenger RNA ? polypeptide ? protein D. gene ? chromosome ? messenger RNA ? primary transcript ? protein ? polypeptide E. primary transcript ? chromosome ? gene ? protein ? polypeptide ? messenger RNA

Biology & Microbiology

Inserting a gene from the hepatitis B virus into yeast so that the yeast produces a viral protein is an example of

A. etiology. B. genetic engineering. C. immunology. D. microbial genetics. E. gene therapy.

Biology & Microbiology