Which of the following animals use positive pressure breathing to ventilate its lungs?
a. a bird
b. a frog
c. a dog
d. a reptile
e. a human
B
Biology & Microbiology
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Which neurotransmitter is not an amino acid derivative?
A) GABA B) serotonin C) histamine D) dopamine E) acetylcholine
Biology & Microbiology
Which species of bacteria is responsible for causing diseases such as rheumatic fever, glomeru-lonephritis, and exudative pharyngitis?
a. Streptococcus agalactiae b. S. pyogenes c. S. pneumoniae d. Enterococcus
Biology & Microbiology
About half of all flowering plant species, including many important crop plants, are ____
a. polyploids b. haploids c. aneuploids d. monoploids e. diploids
Biology & Microbiology
In the accompanying figure, what would structure A be made up as a gram-negative bacterium?
a. cellulose b. plasmids c. spirochetes d. peptidoglycan e. monosaccharides
Biology & Microbiology