What Is the Unit for the Measure of an Absorbed

question 49

Multiple Choice

What is the unit for the measure of an absorbed dose of radiation and what is its SI definition?

• A) watt, 1W = 1 J/1 sec
• B) joule, 1 J = (mv²)/2
• C) becquerel, 1 Bq = (number of decay events)/time
• D) sievert, 1 Sv = 1 J/(kg of body tissue)
• E) gray, 1 Gy = 1 J/(kg of body tissue)

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Definitions:

Coenocytes

A type of cell that contains multiple nuclei within a shared cytoplasm, without dividing into individual cells.

Dikaryotic

Condition of having two nuclei per cell (i.e., n + n), characteristic of certain fungal hyphae. Compare with monokaryotic.

Polykaryotic

A cellular condition in which an organism has multiple nuclei within a single cell membrane.

Yeast

A unicellular fungus (usually an ascomycete) that reproduces asexually by budding or fission, and sexually by ascospores.