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

Explain the cultural practices of single crop, Explain the Cultural Practic...

Explain the Cultural Practices of single crop Continuous cultivation of a single crop over years on the same site causes accumulation of a particular group of microbes, which d

Define the role of protein and purines, Q. Define the Role of Protein and P...

Q. Define the Role of Protein and Purines? Cellular materials of plants, grams and legumes and animal glandular organ meats (liver, pancreas brain, kidneys) contain nucleoprote

Define triple sugar iron - carbohydrate utilization pattern, Define Triple ...

Define Triple Sugar iron - Carbohydrate Utilization Pattern? Triple sugar iron (TSI) agar is used to observe carbohydrate utilization pattern. The medium contains 1% concentr

State about the halstead tactual performance test, The Halstead Tactual Per...

The Halstead Tactual Performance Test This procedure used a version of the Seguin-Goddard Form board, but it is done blindfold. The subject's task is to place all the 10 blocks

What is an example of intraspecific competition, Q. What is an example of i...

Q. What is an example of intraspecific competition? The Intraspecific competition occurs in practically all species, for instance, the competition of humans for a job.

Seed structure, why mung beans has no endosperm while castor bean and maize...

why mung beans has no endosperm while castor bean and maize seed has?

Cryptococcosis, Cryptococcosis Cryptococcosis is a pulmonary, meningea...

Cryptococcosis Cryptococcosis is a pulmonary, meningeal or systemic mycotic disease of human beings and animals. It may be acute, subacute or chronic. The disease is caused by

What does liquescence digestive enzyme do, What does Liquescence digestive ...

What does Liquescence digestive enzyme do? It helps to normalize the secretion of digestive juices and enzymes in the gastrointestinal tract

Sample titration for estimation of vitamin c in lemon juice, Define Sample ...

Define Sample Titration for Estimation of Vitamin c in Lemon Juice? Cut the lemon into two halves with a stainless steel knife. Remove the seeds. Squeeze the juice from half a

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