Mitochondria , Biology

Assignment Help:

MITOCHONDRIA

  1. It is the power house of the cell because they are the major centers of release of energy in the aerobic respiration.
  2. Mitochondria and chloroplast both are antagonistic to each other. Chloroplast stores food stuffs energy during photosynthesis whereas mitochondria convert potential energy of food stuffs into kinetic energy during respiration.
  3. Discovered by Kolliker (1880) in striped muscles of insects and he called it Cytoplasmic granules .
  4. Flemming called it Fila.
  5. Petzium called them Sarcosome.
  6. Richard Altman called it Bioplast.
  7. The term "mitochondria" given by Benda.
  8. F. Meves first observed them in plants ( Nymphea)
  9. Kinsbury and Hogeboom related them with cell respiration.
  10. Seekevitz called them power house of cell.
  11. Palade worked out ultrastructure of mitochondria.
  12. Nass-Nass, Afzelius and Margit discovered DNA in mitochondria & called it mtDNA. It is also known as orgenelle DNA.
  13. Mitochondria can be stand by stained by Janus Green-B. After staining mitochondria seems Greenish blue.
  14. Total mitochondria in a cell = Chondriosome, term given by Ptezium.
  15. Life span of mitochondria is 5-10 days.

NUMBER

  1. Average number of mitochondria in each cell is about 1000-1600.
  2. Single mitochondrion present in Microasterias (alga), Chlorella fusca (Green algae), Trypanosoma, Micromonas (Protozoans).
  3. Less than 10 mitochondria present in Fungi.
  4. 25 in sperm cell, 300-500 in kidney cells, 500-1000 in liver cells, 30000 in some oocyte, 50000 in giant amoeba (chaos chaos) & 5 lakhs in flight muscle cells.

SHAPE & SIZE

  1. Mitochondria are spherical or filamentous in shape.
  2. Smallest mitochondria are present in yeast (< 1m).
  3. Largest mitochondria are present in Rana pipens ( 20-40 m)
  4. In human body largest mitochondria are present in pancreatic cells (10m).
  5. Size depends on activity of cell. Active cells (meristematic cells) have large mitochondria.

Related Discussions:- Mitochondria

Types of surgery in exstrophy of the bladder, Types of Surgery   There ...

Types of Surgery   There may be two options for surgical correction. Urinary Diversion In this following procedures are performed:  1)  Uretero sigrnoidostomy  if there  is

Amoebae - protozoan, Amoebae - Protozoan Amoebae may be naked or enclo...

Amoebae - Protozoan Amoebae may be naked or enclosed in tests or shells. The marine, freshwater and parasitic naked amoebae have large commonly tubular lobopodia or fine strap

Define hormonal and receptor proteins, Define Hormonal and Receptor Protein...

Define Hormonal and Receptor Proteins? Hormonal proteins : Hormonal proteins coordinate the bodily activities. Several peptide and protein hormones (like insulin and growth ho

Briefly explain about the sit-ups test, Briefly explain about the Sit-ups T...

Briefly explain about the Sit-ups Test? To measure muscular endurance, bent knee sit-ups can be done. Sit-ups begin with the subject lying flat on their backs with their knees

Cytokinesis second, A cleavage furrow appears in the middle of the cell, de...

A cleavage furrow appears in the middle of the cell, deepens gradually and divides the cell into two. Thus, at the end of second meiotic division, four daughter cells are formed

Identify the hormones produced by the anterior, Identify the hormones produ...

Identify the hormones produced by the anterior and posterior lobes of the pituitary gland and specify the functions of those hormones.

Fungi, a soil surface of 10cm2 may contain what type of hyphae?

a soil surface of 10cm2 may contain what type of hyphae?

Explain the process of determination of vitamin C, Determination of vitamin...

Determination of vitamin c Majority of chemical methods of determination is based on the rapid oxidation of ascorbic acid and therefore not too highly specific. Titration of

Explain iodophors, In these disinfectants, iodine is incorporated along wi...

In these disinfectants, iodine is incorporated along with a detergent. They are not as effective as hypochlorites against bacterial spore but also get inactivated in the pres

Agricultural activities - cause of air pollution, Agricultural activities -...

Agricultural activities - Cause of Air Pollution Agricultural activities too are a major cause of air pollution. About 60 to 65% of carbon dioxide is produced from burning of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd