Biologically speaking, a pigment is a:

A) molecule that absorbs a photon.
B) molecule that releases oxygen.
C) molecule that absorbs carbon dioxide.
D) cell that absorbs a photon.
E) cell that fixes carbon.


A) molecule that absorbs a photon.

Biology & Microbiology

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An insecticidal protein has been discovered in a bacterium known as  

A.  Escherichia coli. B.  Agrobacterium tumefaciens. C.  Bacillus thuringiensis. D.  Aspergillus sp.

Biology & Microbiology

The breakdown of glucose to pyruvate by a cell is an example of what type of reaction?

A) anabolic B) aerobic C) catabolic D) apoptotic E) synthetic

Biology & Microbiology

Expression of a(n) ________ alters gene transcription in E. coli by activating transcription of specialized heat stress response genes

Fill in the blank(s) with correct word

Biology & Microbiology

What does bright red blood indicate?

A) that oxygen is no longer bound to hemoglobin B) that copper is bound to hemoglobin C) that oxygen is bound to hemoglobin D) that carbon monoxide is bound to hemoglobin

Biology & Microbiology