Cholesterol, Biology

Assignment Help:

CHOLESTEROL

  1. Other name is parental steroid.
  2. It is present all over the body but absent in cerebrospinal fluid.
  3. Cholesterol is found exclusively in animal food.
  4. It has also been reported to occur in Potato.
  5. The major part of body cholesterol is synthesized in liver and adrenal cortex.
  6. Other organs taking part in synthesis of cholesterol are skin, intestine, kidneys, ovaries and testes.
  7. Normal cholesterol concentration of blood is 140 - 250 mg/100 ml.
  8. It also forms component of low density lipoproteins (LDL or b -lipoprotein, 10 - 25%) and high density lipoproteins (HDL or a -proteins, 20%).
  9. Concentration of LDL and VLDL is found to increase in atherosclerosis and coronary thrombosis.
  10. Cholesterol is component of cell membranes in animals and wall-less bacteria called mycoplasma.
  11. It helps in formation of bile salts.
  12. Cholesterol prevents premature breakdown of erythrocytes.
  13. Cholesterol transports fat to liver for metabolism.
  14. It produces sex hormones - progesterone, estrogen (female sex hormones) and testosterone (male sex hormone).
  15. Moulting hormone ecdysone is formed from cholesterol in insects.
  16. On combination with a saturated fatty acid, cholesterol forms yellowish plaques in the walls of large and medium sized arteries. The walls become thick fibrotic and calcified. The phenomenon is called atherosclerosis. It narrows lumen of arteries resulting in reduced flow of blood.
  17. Birth control tablets possess steroid hormone progesterone.

Related Discussions:- Cholesterol

Glands and its types, Glands A cell, tissue or organ which secretes ...

Glands A cell, tissue or organ which secretes specific chemical secretion is known as a gland. The glands develop from the epithelium tissues. The glands are classifi

Homo sapiens, Homo sapiens first appeared in the fossil record between 200,...

Homo sapiens first appeared in the fossil record between 200,000 to 300,000 years ago, The fossils were the Swanscomb man from England and Steinheim man from Germany. a) The Swa

Show the factors affecting osseointegration, Q. Show the Factors affecting ...

Q. Show the Factors affecting osseointegration? The success or failure of osseointegration is dependent on the following factors. a) Occlusal load b) Biocompatibility of

What are mycotoxins and how are they harmful, Q. What are mycotoxins and Ho...

Q. What are mycotoxins and How are they harmful? • Mycotoxins are toxins (secondary metabolites) produced by filamentous fungi on food and feed that cause illness when ingested

Amount of proteins present in the cell, Cells regulate their level of activ...

Cells regulate their level of activity by regulating the amount of proteins present in the cell at any given time, so an up regulation of enzymes would be expected to A. increase t

Sucrose is non sugar but maltose and lactose are not. why?, Sucrose is a no...

Sucrose is a non-reducing Sugar while Maltose and Lactose are reducing due to the presence of free Aldehydic Functional Group in them. In SUgar the Aldehydic Group of both Glucose

Explain metabolism of iron, Explain Metabolism of Iron? In this sub-sec...

Explain Metabolism of Iron? In this sub-section, we will study how body gets its iron supply, how iron is transported and utilized by the various tissues and how iron balance i

What are the major orders of placental mammals, Q. What are the major order...

Q. What are the major orders of placental mammals? What are a few representative species and distinguishing features of each of those orders? The orders into which placental ma

Hard paste removal-therma-fill, Hard paste removal -    Hard setting Ca...

Hard paste removal -    Hard setting Ca(Ho) 2 paste (like Endocal 10) can be softened by EDTA and removed by file or microdebrider. -    Care must be taken not to gouge or

What does myeloid immunodeficiency cause, Myeloid immunodeficiency causes p...

Myeloid immunodeficiency causes phagocytic function, which is impaired. Those who are affected with this will undergo with enhance in susceptibility to bacterial infection.

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