Question

what is the primary definition of a calorie in this context? *
the total amount of food a person can eat in a day
the number of nutrients in a food item
the amount of heat needed to raise one kilogram of water by one degree celsius
a measure of body weight
what percentage of calories is typically used to support basic organ and tissue functions?
20%
50%
10%
70%

Explanation:

A calorie is defined as the amount of heat needed to raise one kilogram of water by one degree Celsius. Regarding the percentage of calories used for basic organ and tissue functions, the basal metabolic rate (BMR) which supports these functions typically accounts for about 70% of total calorie expenditure.

Answer:

For the first question: The amount of heat needed to raise one kilogram of water by one degree Celsius.
For the second question: 70%.