QUESTIONS AND ANSWERS GRADED A+
◍ Prokaryotic cell . Answer: Cell without a nucleus
◍ Eukaryotic cell . Answer: Cell with a nucleus
◍ Peristalsis . Answer: Wavelike muscular contractions in the GI tract
◍ Digestion . Answer: Process of breaking down food into smallest
components for absorption
◍ Mucosa . Answer: Tissue layer in digestive tract producing digestive
juices
◍ Absorption . Answer: Process of taking in nutrients from food
◍ Villi . Answer: Finger-like projections in the small intestine for
absorption
, ◍ Microvilli . Answer: Microscopic projections on villi for nutrient
absorption
◍ Calories . Answer: Unit of energy; obtained from energy nutrients
◍ Digestive Juices . Answer: Enzyme-containing fluids breaking down
food into absorbable compounds
◍ Small Intestine Segments . Answer: Duodenum, jejunum, and ileum;
specialized for nutrient absorption
◍ Vascular System . Answer: Closed system of vessels for blood
circulation
◍ Capillaries . Answer: Smallest blood vessels branching from arteries
◍ Lymphatic System . Answer: One-way route for lymph circulation,
excluding red blood cells
◍ Anabolism . Answer: Reactions combining smaller molecules into
larger ones, requiring energy
◍ Catabolism . Answer: Reactions breaking down large molecules into
smaller ones, releasing energy