16 Questions
What is the process of breaking down complex molecules into simpler molecules through chemical hydrolysis?
Chemical digestion
Which process allows animals to acquire the necessary energy, organic molecules, and essential nutrients from the digested food?
Absorption
What is the removal of metabolic wastes, including carbon dioxide and water from cell respiration and nitrogenous wastes from protein metabolism?
Excretion
What type of digestion aids in physically breaking down food particles for easier chemical digestion?
Mechanical digestion
Which organ produces urea, a nitrogenous waste?
Liver
What are the three nitrogenous wastes mentioned in the text?
Ammonia, urea, uric acid
What is the role of salivary amylase in the mouth?
It begins the chemical breakdown of starch
What is the function of the epiglottis in the digestive system?
It prevents food from entering the windpipe
What is the role of pepsin in the stomach?
It begins the digestion of proteins
What is the function of bile in the small intestine?
It acts as an emulsifier to breakdown fats
What is the primary role of villi in the small intestine?
Absorption of nutrients
What is the function of capillaries in the villi?
Absorption of amino acids, vitamins and monosaccharides
What is the purpose of rennin in the stomach?
Aids in digestion of proteins in milk
How does the cardiac sphincter contribute to digestion?
Prevents food from entering the windpipe
What is the main function of microvilli on epithelial cells?
Greatly increases rate of nutrient absorption
What is primarily absorbed by lacteals in the small intestine?
Fatty acids and glycerol
This quiz covers the process of animal ingestion and the different ways in which animals take in food. It also includes the methods of digestion, such as intracellular and extracellular digestion, as well as mechanical and chemical digestion.
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