Predict the most immediate consequence of the inflammation of the pleural sac in a human.

A. Gas exchange would decrease.
B. Lung volume would decrease.
C. Respiratory muscle activity would decrease.
D. Hemoglobin's oxygen affinity would decrease.


B. Lung volume would decrease.

Biology & Microbiology

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What is the first step during transcription initiation in prokaryotes?  

A.  the transcription bubble is formed B.  RNA polymerase binds to the promoter C.  the DNA double helix is unwound D.  RNA polymerase synthesizes a short primer E.  transcription factors bind to the TATA box sequence

Biology & Microbiology

Frogs, birds, rabbits and lizards all have different forelimbs, which makes sense when you consider their different lifestyles. Interestingly, all of their forelimbs share the same set of bones—the ulna, the radius, and the humerus

These same bones are also seen in fossils of the extinct animal Eusthenopteron, which demonstrates common ancestry among these four groups of animals. Hence, these forelimbs are an example of: A. analogies. B. homologies. C. similes. D. homilies.

Biology & Microbiology

Circulatory systems ____

a. are found in all animals b. result in slow distribution of nutrients and gases c. include one or more hearts d. are always closed systems e. are found in cnidarians and flatworms

Biology & Microbiology

Speciation caused by the separation of the continents

is a. divergence. b. parapatry. c. gene flow. d. allopatry. e. sympatry.

Biology & Microbiology