The exchange of oxygen and carbon dioxide between the blood and the lungs is called ________

A) internal respiration B) inspiration
C) external respiration D) exhalation


Answer: C

Biology & Microbiology

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What would be the phenotypic and genotypic ratios of a cross between two individuals that are heterozygous for an incompletely dominant trait?

1.3:1 and 1:2:1 2.1:2:1 and 1:2:1 3.1:2:1 and 3:1 4.9:3:3:1 and 3:1

Biology & Microbiology

Tetrodotoxin is a potent poison, produced by some newts, pufferfish, and blue-ringed octopus that affects sodium transport involved with the voltage gates in neurons. A friend swimming in the Caribbean is pricked by a pufferfish and gets very sick. The most likely action the poison takes is

A. mimicking an antiporter and allowing sodium to rush out. B. blocking an antiporter so sodium cannot rush in. C. mimicking a symporter and allowing sodium to rush out and potassium to rush in. D. blocking a symporter and keeping sodium from rushing in.

Biology & Microbiology

Tetracycline is effective against viruses because it disrupts the action of the viral ribosomes.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Water quality can be tested by detection of (E. coli/Cryptosporidium/norovirus) using the chemical known as MUG.

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

Biology & Microbiology