The approximate energy yield of carbohydrates is 4 calories/gram; fats yield about 9 calories/gram, and proteins about 4 calories/gram. jack and sarah consumed the following for lunch: jack—100 grams protein, 20 grams fat, 75 grams carbohydrates; sarah— 75 grams protein, 10 grams fats, 75 grams carbohydrates. how many calories each did jack and sarah consume

Calories consume by Sarah 690 cal.

Calories consume by jack 880 cal.

Explanation:

For jack

Mass of carbohydrate = 75 g

Mass of protein = 100 g

Mass of fats = 20 g

For Sarah,

Mass of carbohydrate = 75 g

Mass of protein = 75 g

Mass of fats = 10 g

Solution:

The average calories content of

Protein 4 cal/g

Carbohydrate 4 cal/g

Fat 9 cal/g

Then,

First of all we will calculate the calories consume by jack.

100 g protein × 4 cal/g =  400 cal

20 g fat × 9 cal/g = 180 cal

75 g carb. × 4 cal/g = 300 cal

              Total calories = 880 cal  

Calories consume by Sarah.

75 g protein × 4 cal/g =  300 cal

10 g fat × 9 cal/g = 90 cal

75 g carb. × 4 cal/g = 300 cal

              Total calories = 690 cal  

1. a tropical dry forest carries out more rapid nutrient cycling

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.