Question

incidentally, congo red is a ph indicator that is red at ph levels greater than 5.2 and blue at ph levels less than 3.0. if you watch carefully, you may be able to observe a color change in the food vacuole as the acidity levels increase during intracellular digestion. often you will see the food vacuole change from red to purple as the ph drops below 5.2. occasionally you will see the food vacuole change from purple to blue, indicating a highly acidic ph level below 3.0. check your progress 5.1 give the function of each organelle listed: a. oral groove b. micronucleus c. macronucleus d. contractile vacuole e. food vacuole f. cilia 5.2 do the cilia of paramecium beat in unison or in small groups? 5.3 describe the process of feeding in paramecium.

Explanation:

a. The oral groove in Paramecium is used for food collection. It sweeps food particles towards the cell mouth.
b. The micronucleus is involved in sexual reproduction and genetic recombination in Paramecium.
c. The macronucleus controls the day - to - day metabolic activities of Paramecium.
d. The contractile vacuole in Paramecium is responsible for osmoregulation, expelling excess water from the cell.
e. The food vacuole in Paramecium stores and digests food particles.
f. Cilia in Paramecium are used for locomotion and also help in feeding by creating water currents.
For 5.2, the cilia of Paramecium beat in unison.
For 5.3, Paramecium feeds by using its cilia to create water currents that bring food particles into the oral groove. The food is then enclosed in a food vacuole where digestion occurs.

Answer:

a. Food collection.
b. Involved in sexual reproduction and genetic recombination.
c. Controls day - to - day metabolic activities.
d. Osmoregulation (expels excess water).
e. Stores and digests food particles.
f. Used for locomotion and feeding.
5.2: In unison.
5.3: Cilia create water currents to bring food into oral groove, which is then enclosed in a food vacuole for digestion.