Nutrition in Organisms Quiz

Which type of organism can produce its own food through photosynthesis or chemical processes?

• Heterotroph
• Autotroph
• Parasite
• Saprotroph

In saprotrophic nutrition, what is the primary method of obtaining nutrients?

• Internal digestion
• Photosynthesis
• External enzyme secretion and absorption
• Direct cellular absorption

What distinguishes holozoic nutrition from other nutritional methods?

• External digestion
• Intracellular absorption
• Internal digestion with multiple stages
• Parasitic feeding

In unicellular organisms like Amoeba, how is food digestion primarily carried out?

• External digestion
• Intracellularly
• Through specialized organs
• Via enzyme secretion

What evolutionary progression is seen in gut development across multicellular organisms?

• From tube gut to sac-like structure
• From single opening to specialized regions
• From complex to simple structures
• From external to internal digestion

Which enzyme breaks down starch into maltose?

• Pepsin
• Lipase
• Salivary amylase
• Trypsin

What is the primary function of bile salts in digestion?

• Protein breakdown
• Enzyme activation
• Lipid emulsification
• Glucose absorption

How are amino acids absorbed into the epithelial cells of the villi?

• Simple diffusion
• Active transport
• Osmosis
• Filtration

What characterizes a carnivore's digestive system?

• Long gut
• Multiple stomach chambers
• Relatively short gut
• Complex enzyme production

What adaptation helps herbivores digest high-cellulose diets?

• Short gut
• Rumen with cellulose-digesting bacteria
• Carnassial teeth
• Simple stomach