Understanding Protozoa and Their Structures

What is the function of the plasmalemma in protozoa?

• It provides rigidness to the cell.

• It is the protozoan membrane.

• It helps in exocytosis of waste.

• It regulates osmotic pressure.

Which structure in protozoa is responsible for providing rigidness?

• Ectoplasm

• Endoplasm

• Pellicle

• Cytosome

What is the role of the ectoplasm in protozoa?

• It is the outer gel-like layer.

• It is the inside fluid in the cytoplasm.

• It helps in nutrient uptake.

• It is involved in exocytosis of waste.

Which of the following is true about holozoic protists?

• They take in smaller molecules.

• They take in whole particles.

• They produce hydrogen and generate ATP without O2.

• They have modified mitochondria.

What is the function of the cytoproct in protozoa?

• It helps regulate osmotic pressure.

• It is involved in exocytosis of waste.

• It is the site of nutrient uptake.

• It contains DNA bundles.

Which unique organelle in protozoans helps regulate osmotic pressure?

• Kinetoplast

• Hydrogenosomes

• Contractile vacuoles

• Cytosome

What is a kinetoplast?

• A structure that helps in exocytosis of waste.

• A DNA bundle located by the basal body of flagella.

• A modified mitochondrion.

• A structure that produces hydrogen and generates ATP without O2.

Which of the following is a characteristic of hydrogenosomes?

• They are involved in nutrient uptake.

• They produce hydrogen and generate ATP without O2.

• They are absent in all protozoans.

• They are involved in exocytosis of waste.

Which protozoan is the agent for amoebic dysentery?

• Naegleria fowleri

• Acanthamoeba spp.

• Entamoeba histolytica

• Plasmodial slime molds

What disease is caused by Naegleria fowleri?

• Amoebic dysentery

• Amoebic meningoencephalitis

• Keratitis

• Malaria