A decrease in cortisol triggers a negative

feedback loop and causes release of
a. adrenocorticotropin.
b. cortisol.
c. corticotropin releasing hormone.
d. insulin.
e. thyroxine


C

Biology & Microbiology

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The relatedness of organisms determined by counting common characteristics

A. is called evolutionary taxonomy. B. is called amino acid sequences. C. is called DNA sequences. D. is called numerical taxonomy. E. suggests the organisms are very closely related at the species level AND means the GC content is 45%.

Biology & Microbiology

The animal in the above diagram has a __________

circulatory system. a. closed b. open c. semi-closed d. vascular e. none of these

Biology & Microbiology

Thymine dimers

A. form when DNA is exposed to carcinogens such as tobacco smoke. B. result in abnormal protein structure which causes red blood cells to sickle. C. are rarely removed by DNA repair enzymes. D. form when DNA is exposed to UV radiation.

Biology & Microbiology

Describe how the structure of the bacterial cytoplasmic membrane relates to its function of selective permeability

What will be an ideal response?

Biology & Microbiology