Horizontal gene transfer is the transfer of genes between

A. two chromosomes in a nucleus.
B. organelles within a cell.
C. cells within a multicellular organism.
D. different species, both prokaryotic or eukaryotic.
E. prokaryotic species to different prokaryotic species.


D. different species, both prokaryotic or eukaryotic.

Biology & Microbiology

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Which two factors affect how many gas molecules move across the respiratory surface in any given

time? a. moisture and transport proteins b. moisture and surface area c. partial pressure gradient and moisture d. partial pressure gradient and surface area e. transport proteins and surface area

Biology & Microbiology

Mitochondrial gene defects mainly cause myopathies (conditions affecting ____________________),

and encephalomyopathies (conditions also affecting ____________________). Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which is the normal direction in which the nerve impulse flows? 

A. axon—soma—dendrite B. dendrite—soma—axon C. soma—dendrite—axon D. dendrite—synapse—axon

Biology & Microbiology

In converting carbohydrates into fats, acetyl molecules are combined to form 

A. amino acid. B. glycerol. C. fatty acid. D. keto acid.

Biology & Microbiology