IB-DP Biology Topic 6.1-2-3

What is the function of the small intestine in the digestive system?

• Absorption of nutrients

• Storage of waste

• Regulation of blood sugar

• Production of bile

Explain the role of enzymes in chemical digestion.

• Enzymes only work in the presence of oxygen

• Enzymes have no role in chemical digestion

• Enzymes help in building large molecules from smaller molecules

• Enzymes break down large molecules into smaller molecules that can be absorbed by the body.

How are nutrients absorbed in the small intestine?

• Through diffusion, facilitated diffusion, active transport, and endocytosis

• By exocytosis and pinocytosis

• Via passive transport and phagocytosis

• Through osmosis and filtration

What is the function of red blood cells in the blood system?

• Regulating body temperature

• Storing nutrients

• Producing antibodies

• Carrying oxygen and transporting carbon dioxide

Describe the process of hematopoiesis.

• Hematopoiesis is the process of breaking down blood cells into their components.

• The process of hematopoiesis involves the production of various types of blood cells, including red blood cells, white blood cells, and platelets, from hematopoietic stem cells.

• The process of hematopoiesis involves the production of only red blood cells.

• Hematopoiesis is the process of producing bone marrow.

How does the immune system respond to bacterial infections?

• Releasing hormones to attack the bacteria

• Causing inflammation in the body

• Activating white blood cells and producing antibodies

• Suppressing the production of white blood cells

What is the function of the liver in the digestive system?

• to make and secrete bile and to process and purify the blood containing newly absorbed nutrients that are coming from the small intestine

• Storage of waste

• Regulation of blood sugar

• Absorption of nutrients

What is the function of the pancreas in the digestive system?

• Production of bile

• Regulation of blood sugar

• Storage of waste

• Breakdown of carbohydrates, fats, and proteins

What is the function of the spleen in the immune system?

• Production of red blood cells

• Regulation of blood pressure

• Storage of excess nutrients

• Filtering and removing old or damaged blood cells

What is the role of the thymus in the immune system?

• Production of red blood cells

• Regulation of blood pressure

• Maturation of T cells

• Filtering and removing old or damaged blood cells