Human Biology Quiz Chapter Two

1. A food label on a cereal box gives you the following information: a serving size equals one cup and there are 110 Calories per serving. You measure the amount of cereal you plan to eat and find that it measures 1 1/2 cups. How many Calories will you consume?

110 Calories

165 Calories

220 Calories

1,100 Calories

If the serving size is one cup and there are 110 Calories per serving, then consuming 1 1/2 cups of cereal would mean consuming 1.5 times the amount of calories in one serving. Therefore, you would consume 110 x 1.5 = 165 Calories.

Explanation

If the serving size is one cup and there are 110 Calories per serving, then consuming 1 1/2 cups of cereal would mean consuming 1.5 times the amount of calories in one serving. Therefore, you would consume 110 x 1.5 = 165 Calories.

2. Which of the following organs is not just a digestive organ?

Stomach

Liver

Small intestine

Large intestine

The liver is not just a digestive organ because it has multiple functions in the body. It plays a crucial role in detoxifying harmful substances, producing bile which aids in digestion, storing vitamins and minerals, and regulating blood sugar levels. Additionally, the liver is responsible for metabolizing drugs and producing proteins necessary for blood clotting. Therefore, while the stomach, small intestine, and large intestine primarily function in digestion, the liver has a broader range of functions beyond digestion.

Explanation

The liver is not just a digestive organ because it has multiple functions in the body. It plays a crucial role in detoxifying harmful substances, producing bile which aids in digestion, storing vitamins and minerals, and regulating blood sugar levels. Additionally, the liver is responsible for metabolizing drugs and producing proteins necessary for blood clotting. Therefore, while the stomach, small intestine, and large intestine primarily function in digestion, the liver has a broader range of functions beyond digestion.

3. For food eaten at noon,absortion cannot have begun by?

1 p.m.

7 p.m.

9 p.m.

Noon the next day

The correct answer is 1 p.m. because absorption of food typically begins within a few hours after eating. Since the food is eaten at noon, it is reasonable to assume that absorption would have started by 1 p.m.

Explanation

The correct answer is 1 p.m. because absorption of food typically begins within a few hours after eating. Since the food is eaten at noon, it is reasonable to assume that absorption would have started by 1 p.m.

4. Which Following parts of the digestive system is best paired with its fuction.

Esophagus-digests carborhydrates

Stomach-digests fats

Small intestine-absorbs water

Liver-produces bile

The liver is responsible for producing bile, which is a substance that helps in the digestion and absorption of fats. Bile is stored in the gallbladder and released into the small intestine when needed. The other options mentioned in the question, such as the esophagus, stomach, and small intestine, have different functions in the digestive system but are not specifically responsible for producing bile.

Explanation

The liver is responsible for producing bile, which is a substance that helps in the digestion and absorption of fats. Bile is stored in the gallbladder and released into the small intestine when needed. The other options mentioned in the question, such as the esophagus, stomach, and small intestine, have different functions in the digestive system but are not specifically responsible for producing bile.

5. If a meal is eaten at noon, what happening to the food at 1 p.m.?

Salvia is breaking down starch into sugar

Proteins are being digested into short chains of amino acids

Fats are being digested

Digested food is being absorbed into the blood

At 1 p.m., the process of protein digestion is occurring. Proteins are being broken down into shorter chains of amino acids, which are easier for the body to absorb and utilize. This is an important step in the overall process of digestion and nutrient absorption.

Explanation

At 1 p.m., the process of protein digestion is occurring. Proteins are being broken down into shorter chains of amino acids, which are easier for the body to absorb and utilize. This is an important step in the overall process of digestion and nutrient absorption.

6. Compare the processes of the mechemical and chemical digestion. How are they similar? How are they different? In what parts of the digestive system do the two processes take place? How do the processes occur?

Mechanical digestion causes a physical change as the pieces of food are broken down into smaller pieces.

In chemical digestion, foods are broken down chemically into their smaller building blocks with the help of enzymes.

The processes are similar in that

In chemical digestion, food is broken down chemically into smaller building blocks with the assistance of enzymes. This process involves the breaking of complex molecules into simpler ones through chemical reactions. On the other hand, mechanical digestion causes a physical change as food is broken down into smaller pieces. This process involves the physical breakdown of food through chewing, grinding, and churning in the stomach. The two processes differ in terms of the type of change they bring about in food. Mechanical digestion involves physical changes, while chemical digestion involves chemical changes. Both processes occur at different parts of the digestive system. Mechanical digestion primarily occurs in the mouth and stomach, while chemical digestion occurs mainly in the small intestine with the assistance of various digestive enzymes.

Explanation

In chemical digestion, food is broken down chemically into smaller building blocks with the assistance of enzymes. This process involves the breaking of complex molecules into simpler ones through chemical reactions. On the other hand, mechanical digestion causes a physical change as food is broken down into smaller pieces. This process involves the physical breakdown of food through chewing, grinding, and churning in the stomach. The two processes differ in terms of the type of change they bring about in food. Mechanical digestion involves physical changes, while chemical digestion involves chemical changes. Both processes occur at different parts of the digestive system. Mechanical digestion primarily occurs in the mouth and stomach, while chemical digestion occurs mainly in the small intestine with the assistance of various digestive enzymes.