________ is the messenger that regulates blood pressure by causing arterial smooth muscle relaxation

Fill in the blank with correct word.


Answer: Nitric oxide

Biology & Microbiology

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The half-life of carbon-14 is 5730 years. Approximately how old is a fossil that contains .25g carbon-14 and .75g nitrogen-14?

A. 11,460 years B. 5730 years C. 17,190 years D. 22,920 years E. 28650 years

Biology & Microbiology

The two principal divisions of the peripheral nervous system are the

a. somatic and autonomic systems. b. sympathetic and parasympathetic systems. c. peripheral and central systems. d. afferent and autonomic systems. e. cranial and skeletal nerves.

Biology & Microbiology

The Rb gene is located at 13q14. This locus is on

A. the long arm of chromosome 14 B. the long arm of chromosome 13 C. the short arm of chromosome 14 D. the short arm of chromosome 13

Biology & Microbiology

Mitochondria contain their own DNA, separate from that of the rest of the cell

Indicate whether the statement is true or false

Biology & Microbiology