Respiration of Euglena?

1. Can Euglena perform aerobic respiration?
2. What is the excretion of Euglena?
3. Is Euglena aerobic or anaerobic?
4. How do Euglena reproduce?
5. What is the function of the flagellum in a euglena?
6. What is the life cycle of euglena?
7. What is the function of the short flagellum in euglena?
8. What would cause a cell to switch to anaerobic respiration?
9. Do euglena have cell walls?
10. Can yeast respire anaerobically?
11. Which pigment is present in Euglenoid?
12. How did Euglena gain the ability to photosynthesize?
13. Why is Euglena a eukaryote?
14. What are the functions of flagellum?
15. Which best describes the function of eyespots in Euglena?
16. Why are Euglenoids said to photosynthetic and Heterotrophs?

Can Euglena perform aerobic respiration?

Our data show that under aerobic conditions Euglena mitochondria are prepared for anaerobic function and furthermore suggest that the ancestor of mitochondria was a facultative anaerobe, segments of whose physiol- ogy have been preserved in the Euglena lineage.

What is the excretion of Euglena?

The term for getting rid of Euglena excretion in this manner is called exocytosis. ... The process that keeps fluid levels balanced in the Euglena cell is called osmoregulation. When it is time to remove excess water, the vacuole fuses with the Euglena cell membrane, contracts and expunges the water outside the cell.

Is Euglena aerobic or anaerobic?

Euglena gracilis, a photosynthetic unicellular protist, has a unique anaerobic energy generating system called wax ester fermentation, in which wax esters are synthesized as end products from paramylon, a storage polysaccharide (β-1,3-glucan) [4, 5].

How do Euglena reproduce?

Euglena reproduce asexually, by longitudinal cell division; they are not know to reproduce sexually. Several species produce resting cysts that can withstand drying. Euglena live in fresh and brackish water habitats rich in organic matter.

What is the function of the flagellum in a euglena?

Euglena usually live in quiet ponds or puddles. Euglena move by a flagellum (plural flagella), which is a long whip-like structure that acts like a little motor. The flagellum is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water.

What is the life cycle of euglena?

Most Euglena have a life cycle consisting of a free-swimming stage and a non-motile stage. In the free-swimming stage, Euglena reproduce rapidly by a type of asexual reproduction method known as binary fission.

What is the function of the short flagellum in euglena?

In species that possess a long, emergent flagellum, it may be used to help the organism swim. The surface of the flagellum is coated with about 30,000 extremely fine filaments called mastigonemes. Like other euglenoids, Euglena possess a red eyespot, an organelle composed of carotenoid pigment granules.

What would cause a cell to switch to anaerobic respiration?

In the context of exercise, we know that if there isn't enough oxygen to meet our ATP demands, the muscle cells switch over to anaerobic respiration, which produces lactic acid. The lactic acid then builds up, causing decreased muscle contraction as we explained before.

Do euglena have cell walls?

Unlike plant cells, Euglena lack a rigid cellulose wall and have a flexible pellicle (envelope) that allows them to change shape.

Can yeast respire anaerobically?

Anaerobic respiration in yeast

The yeast has to switch to using anaerobic respiration to ensure it can survive. Ethanol and carbon dioxide are produced. Yeast can also be used to produce bread. Yeast respires using glucose in the sugar that was added to the dough.

Which pigment is present in Euglenoid?

The two main types of pigment found in the euglenoids are the green chlorophyll molecules and the orange-red carotenoids.

How did Euglena gain the ability to photosynthesize?

Photosynthetic euglenoids gained their chloroplasts through secondary endosymbiosis. This process occurred whereby an ancestral phagotrophic euglenoid engulfed a green alga ( Gibbs 1978 ) and the chloroplast was retained, resulting in the first Euglenophyceae.

Why is Euglena a eukaryote?

Amoebas, paramecia, and euglena are all considered eukaryotic cells because they contain membrane-bound organelles which include a defined nucleus....

What are the functions of flagellum?

The primary function of a flagellum is that of locomotion, but it also often functions as a sensory organelle, being sensitive to chemicals and temperatures outside the cell. Flagella are organelles defined by function rather than structure.

Which best describes the function of eyespots in Euglena?

Euglena also have an eyespot at the anterior end that detects light, it can be seen near the reservoir. This helps the euglena find bright areas to gather sunlight to make their food.

Why are Euglenoids said to photosynthetic and Heterotrophs?

Answer: The Euglena is unique in that it is both heterotrophic (must consume food) and autotrophic (can make its own food). Chloroplasts within the euglena trap sunlight that is used for photosynthesis, and can be seen as several rod like structures throughout the cell.