An ancestral species and all its evolutionary descendants define a(n) ________

A) outgroup
B) clade
C) genus
D) ingroup


B

Biology & Microbiology

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All of the following are part of a prokaryotic cell EXCEPT _____

A) DNA B) a cell wall C) a plasma membrane D) ribosomes E) an endoplasmic reticulum

Biology & Microbiology

Once food is digested, the nutrients must be absorbed by the epithelial cells that line the specialized portions of the alimentary canal. Small, hydrophobic molecules can diffuse down concentration gradients across the membrane. What types of molecules would require ACTIVE TRANSPORT in order to get across?

_____ minerals _____ water _____ monoglycerides _____ amino acids _____ salt

Biology & Microbiology

The movement of both oxygen and carbon dioxide in

the body is accomplished by a. exocytosis and endocytosis. b. facilitated diffusion. c. osmosis. d. simple diffusion. e. active transport.

Biology & Microbiology

A mutation results in a gene product with a novel function that is not normally found in wild-type organisms. This type of mutation is known as __________

A) amorphic B) hypomorphic C) hypermorphic D) neomorphic E) dominant negative

Biology & Microbiology