The skeletons of ray-finned fishes are made of cartilage

Indicate whether the statement is true or false


FALSE

Biology & Microbiology

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The chemicals that attract neutrophils to a site of infection are called ____________________

Fill in the blank(s) with correct word

Biology & Microbiology

When cells metabolize protein, ammonia is formed. An example of an animal that directly excretes ammonia without further modification is a

a. fish. b. bird. c. snake. d. turtle. e. human.

Biology & Microbiology

Kinesin 1 and myosin II share each of the following features except

A) two heads. B) dimers formed by heavy chain tails coiled around each other. C) formation of bipolar filaments. D) plus end directed motor activity. E) ATPase activity.

Biology & Microbiology

Which aspect of population genetics can lead to changes in allele frequencies in a new mixed population following migration?

A) natural selection B) mutation C) gene flow D) founder effect E) bottleneck effect

Biology & Microbiology