Multiple Choice
Which carbohydrate is considered the most important biological molecule for providing chemical energy in cells?
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4. Biomolecules
Carbohydrates
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many calories are provided by one gram of carbohydrates?
A
9 calories
B
4 calories
C
7 calories
D
2 calories
Verified step by step guidance1
Step 1: Understand the concept of macronutrients and their caloric values. Carbohydrates, proteins, and fats are the three main macronutrients, each providing a specific amount of energy per gram.
Step 2: Recall the standard caloric value for carbohydrates. Carbohydrates provide energy, and their caloric value is universally recognized as 4 calories per gram.
Step 3: Compare the given options (9 calories, 4 calories, 7 calories, 2 calories) to the standard caloric value of carbohydrates.
Step 4: Eliminate incorrect options based on the known caloric value of carbohydrates. For example, 9 calories and 7 calories are too high, and 2 calories is too low.
Step 5: Select the correct answer, which matches the standard caloric value of carbohydrates: 4 calories per gram.
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