7.3 Metabolic Reactions TEST- 1-4

What is the difference between the digestive system and the circulatory system?

• The digestive system transports nutrients and oxygen throughout the body, while the circulatory system processes food to extract nutrients.

• The digestive system processes food to extract nutrients, while the circulatory system transports nutrients and oxygen throughout the body.

• The digestive system is responsible for breathing, while the circulatory system is responsible for digestion.

• The digestive system filters waste from the blood, while the circulatory system absorbs nutrients from food.

What is the function of the digestive system?

• To provide energy through respiration

• To act on ingested food through physical and chemical means to provide absorbable nutrients and excrete waste products.

• To circulate blood throughout the body

• To regulate body temperature and maintain homeostasis.

What is the purpose of testing for food molecules in an experiment?

• To determine the presence of carbohydrates, proteins, and fats in a sample.

• To measure the pH level of the food sample.

• To assess the nutritional value of the food sample.

• To identify the taste of the food sample.

What is the primary function of the small intestine?

• The small intestine is responsible for the majority of nutrient absorption in the digestive system.

• The small intestine produces bile for fat digestion.

• The small intestine stores waste before excretion.

• The small intestine regulates blood sugar levels.

What role does amylase play in digestion?

• Amylase is a hormone that regulates blood sugar levels.

• Amylase is an enzyme that breaks down starch into glucose.

• Amylase is a type of fiber that aids in digestion.

• Amylase is a protein that helps in the absorption of vitamins.

Which organs make up the digestive system?

• Heart, lungs, kidneys, and liver

• Esophagus, stomach, small intestine, and large intestine

• Brain, spinal cord, nerves, and muscles

• Pancreas, gallbladder, spleen, and appendix

What organ does dialysis tubing model in the digestive system?

• The stomach.

• The small intestine.

• The large intestine.

• The pancreas.

Define glucose.

• A complex carbohydrate that stores energy in plants.

• A simple sugar that is an important energy source in living organisms.

• A type of protein that helps in muscle building.

• A fat molecule that provides insulation and energy.

What is an extended structure in the context of molecules?

• A molecular arrangement where atoms are bonded in a continuous network.

• A structure that consists of isolated atoms only.

• A small cluster of atoms that do not interact with each other.

• A temporary arrangement of atoms that changes frequently.

What is the difference between physical and chemical digestion?

• Physical digestion involves the enzymatic breakdown of food into smaller molecules.

• Chemical digestion involves the mechanical breakdown of food (e.g., chewing).

• Physical digestion involves the mechanical breakdown of food (e.g., chewing), while chemical digestion involves enzymatic breakdown of food into smaller molecules.

• Chemical digestion occurs only in the stomach, while physical digestion occurs in the mouth.