When a chlorophyll molecule absorbs light, which excites an electron, the chlorophyll molecule:

A) releases kinetic energy.
B) gains potential energy.
C) releases a photon.
D) returns to its resting state.
E) reflects the photon.


B) gains potential energy.

Biology & Microbiology

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Mycobacterium tuberculosis is one of the few species of bacteria that

A. are encapsulated. B. stain Gram-negative. C. are acid fast. D. stain Gram-positive.

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The ______ is photosynthetic and leaflike in many flowers

a. carpel b. stamen c. petal d. sepal e. stigma

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Suppose that the concentration of K+ inside the cell was 10, and the concentration of K+ outside of the cell was 100 mmol/l. Assuming 37C, the K+ equilibrium potential is ________.

a. -70 mV b. +61 mV c. -61 mV d. -90 mV

Biology & Microbiology

Which feature of mitochondria provides the least amount of information about their endosymbiotic origins?

A. Mode of replication B. Independent replication C. Phospholipids in the membranes D. Circular chromosome

Biology & Microbiology