The evolution of aerobic respiration ____ both oxygen and carbon dioxide levels in the biosphere

a. mutated
b. stabilized
c. increased
d. decreased
e. eliminated


b

Biology & Microbiology

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Which of the following describes active immunity?

a. immunity caused by the body producing antibodies in response to an antigen b. immunity caused by exposure to a vaccination or other pathogen c. a naturally occurring immunity caused by genetic factors or physiology d. a type of immunity caused by an increase in white blood cell productivity

Biology & Microbiology

A hormone that prevents release of a different hormone by its target endocrine cells is called a(n) _____ hormone

a. releasing b. inhibiting c. amino acid-derived d. steroid e. peptide

Biology & Microbiology

The correct sequence of the stages of viral replication is:

a. Attachment - Synthesis - Penetration - Assembly - Release b. Penetration - Attachment - Assembly - Synthesis - Release c. Penetration - Attachment - Synthesis - Release - Assembly d. Attachment - Penetration - Assembly - Synthesis - Release e. Attachment - Penetration - Synthesis - Assembly - Release

Biology & Microbiology

Pr changes to Pfr after absorbing ________ nm wavelength of light.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology