What is the primary difference between a peptide hormone and a steroid hormone?

A major difference between peptide and steroid hormones is the fact that peptide hormones will bind to receptors on the cells they are effecting, and induce a cascading effect. Steroid hormones on the other hand, will travel to the nucleus and have major effects.

Explanation:

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.