Which food likely has the fewest calories per gram of serving and why?
a. grape jelly because it's mostly simple sugars.
b. peanut butter because it contains plant-based fats.
c. whole milk because most of the animal fat remains.
d. bread because it contains a combination of complex carbohydrates, simply sugars and plant-based fats.

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

Which of the following graphs have the same wavelengths

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.