The cellular component that is most susceptible to radiation injury is the a. DNA. b. membrane. c. ribosomes. d. RNA.

A. DNA.

Explanation:

Mutations which are either acquired or somatic, are the alteration of the nucleotide sequence of the genome of a DNA.

These changes can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if an error is made as DNA copies itself during cell division.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

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