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

Legume - development of seeds, Legume - Development of seeds Outer epi...

Legume - Development of seeds Outer epidermis of the ovary usually forms the exocarp of the leguminous pod. Next few cell layers constitute the mesocarp with thick-walled pare

What is heterophagic intracellular digestion, Heterophagic intracellular di...

Heterophagic intracellular digestion is the breaking into minute substances of external substances engulfed in the cell by pinocytosis or phagocytosis. Phagosomes or pinosomes fuse

Drawbacks of free food items for diabetics patients, Drawbacks of Free Food...

Drawbacks of Free Food Items for diabetics patients In this context, it is important to note that a patient can have unlimited servings of 'free foods'. These are foods which d

How does the body defend itself from microorganisms, Q. How does the body d...

Q. How does the body defend itself from microorganisms and other harmful substances that enter the airway during the breathing process? The epithelium of the airway is a ciliat

Define enrichment media - culture media, Define Enrichment Media - Culture ...

Define Enrichment Media - Culture Media? It contains selective ingredients in the medium, which shifts the growth in a mixed microbial population to a particular group of micro

Planting bacteria gardens, Planting bacteria gardens When the bacteria ...

Planting bacteria gardens When the bacteria gardens have cooled place them out on the table but do not increase the glass covers unless you are ready to plant them. Toothpicks

What is probing depth, What is Probing depth Probing depths can be infl...

What is Probing depth Probing depths can be influenced by the tissue type- shallow depths are associated with a keratinized collar, whereas deeper depths are associated with mo

Measurement of the active ingredient in aspirin pills, Medication delivered...

Medication delivered in the form of a pill contains an active ingredient or ingredients. Beside the drug itself, the pill also contains "fillers". The filler has several functions.

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