Protostomes develop through  

A.  spiral cleavage.
B.  radial cleavage.
C.  axial cleavage.
D.  polar cleavage.
E.  protocleavage.


A.  spiral cleavage.

Biology & Microbiology

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Micro RNA therapy is based on the premise that

A. miRNA molecules function to regulate gene expression, usually by initiating transcription; an over-production of miRNA can be replaced thereby promoting necessary protein production. B. miRNA molecules function to regulate gene expression, usually by promoting translation; a non-functional miRNA can be repaired thereby reducing unwanted protein production. C. miRNA molecules function to regulate protein production, usually by inhibiting translation; a hyperactive miRNA can be replaced thereby reducing unwanted proteins. D. miRNA molecules function to regulate gene expression, usually by inhibiting transcription; a non-functional miRNA can be replaced thereby reducing unwanted protein production.

Biology & Microbiology

Molecules that form channels that allow selected molecules to cross the membrane are called

1.recognition proteins. 2.transport proteins. 3.receptor proteins. 4.glycoproteins. 5.cell adhesion proteins.

Biology & Microbiology

What would be the growth rate (r) of an island population of 1000 that has 30 births per 100 population, 20 death per

100 population, 5 immigrants per 100 population, and 10 emigrants per 100 population? a. +5 b. ?50 c. +50 d. ?150

e. +150

Biology & Microbiology

Cellular respiration process is absolutely dependent upon a supply of NADH?

a. glycolysis b. the electron transfer system c. pyruvate oxidation d. the citric acid cycle

Biology & Microbiology