The Hawaiian bobtail squid forms a symbiotic relationship with the ________ bacterium Aliivibrio fischeri

a. pathogenic
b. nitrogen-fixing
c. antibiotic-producing
d. bioluminescent


Answer: D

Biology & Microbiology

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In the second phase of photosynthesis, chemical energy + __________ = sugar

a. carbon dioxide b. nitrogen c. oxygen d. water

Biology & Microbiology

Alligators more closely resemble lizards than birds; however, alligators and birds have four-chambered hearts, which

lizards do not have. In this example, the four-chambered heart is a ____, which indicates that alligators are ____ related to birds than to lizards.

a. derived character; more closely

b. key innovation; more closely c. derived character; more distantly d. key innovation; not e. homologous structure; more distantly

Biology & Microbiology

The organ of nutrition used in fetal development in the most successful mammals is the

A. mammary gland. B. placenta. C. egg. D. pouch. E. marsupium.

Biology & Microbiology

Positive feedback mechanisms enhance changes in the body

Indicate whether the statement is true or false

Biology & Microbiology