Understanding life, Biology

Assignment Help:

UNDERSTANDING LIFE -

  1. Presence of protoplasm is the important feature of life which acts the site of metabolism.
  2. Maintenance of life by protoplasm requires continuous energy conversion and using energy for performance of certain vital activities.
  3. Protoplasm is made up of inorganic (81% - water 80% + minerals & gases 1%) & organic matter (19% - protein 14% + lipid 3% + carbohydrate 1% + regulatory substances as enzymes, hormones, vitamins & nucleic acid 1%)
  4. Inorganics are always micro biomolecules.
  5. Organics may be micro or macro biomolecules.
  6. C, H, O, N, P, S form about 98% of body weight of organism.
  7. O element is maximum i.e. 62%.
  8. Thus life can be defined as "the ever active and changeable state of organized matter".
  9. A living being act as an organisation so they are called organism.
  10. Living organism are morphous.

These are main characters of living beings -

1.      ORGANISATION -

(i) Protoplasmic level - e.g. Protozoa

(ii) Cellular level - e.g. Porifera

(iii) Tissue level - e.g. Coelenterata, Ctenophora

(iv) Organ system level - e.g. Platyhelminthes to Mammals

  • These levels beyond the individual organism are -

(i) Population level - All individuals of a species in a particular area.

(ii) Community level - Population of different species as plants or animals present in a particular area.

(iii) Ecosystem - Living beings inter act with non-living components.

(iv) Biosphere lelvel - Different ecosystem of all the geographical regions of the world form the biosphere.

  • Factor regulating the organisation -

(i) Aggregation - It involves grouping of smaller units to form large units.

(ii) Interaction - It involves interrelationship between different components of an aggregate.

(iii) Equilibrium - Tendency to keep a balance or stability e.g. to maintain ecological balance in nature.

(iv) Change - It is ability to show variation as different atoms as C, H, O, N, combine in different ways to form different chemical in body.

1606_understanding life.png


Related Discussions:- Understanding life

Simple indigestion, S i m p l e indigestion The disease is common ...

S i m p l e indigestion The disease is common in stall-fed individuals. Consumption of indigestible food material, moldy and nutritionally unbalanced feed results in simpl

What are intraspecific ecological interactions, Q. What are intraspecific a...

Q. What are intraspecific and interspecific ecological interactions? The Intraspecific ecological interactions are those between individuals of the similar species. The Intersp

Define about the excretion of calcium, Define about the Excretion of Calciu...

Define about the Excretion of Calcium? Calcium is excreted approximately in equal amounts in urine and through intestinal secretions. Bile and other secretions into the intest

Phlum protoza, what are the some examples of phlum protoza?

what are the some examples of phlum protoza?

Explain the types of care of teeths, Explain the types of care of teeths ...

Explain the types of care of teeths a) Plastic/ Nylon  Scalers: These are available in a variety of shapes and are moderately effective in calculus removal. Can be Ultrasonic

What is enhancers , While  various  positive  control  components  li...

While  various  positive  control  components  lie  close  to the  gene  they  regulate additional can be situated long distances away (sometimes 10-50 kb) either upstream or downs

Prevention of outbreak in salmonellosis, Q. Prevention of Outbreak in salmo...

Q. Prevention of Outbreak in salmonellosis? Prevention of Outbreak: The control of food borne salmonella infection requires the following: 1. Preventing food contamination

Endothermic and exothermic reactions, List out the endothermic and exotherm...

List out the endothermic and exothermic reactions taking place in our body

Explain the behaviour of pteridophytes, Q. Why are pteridophytes better ada...

Q. Why are pteridophytes better adapted to dry land than bryophytes? Were pteridophytes always less abundant than phanerogamic plants? Although pteridophytes and bryophyt

Determine the human energy requirements, Determine the Human Energy Require...

Determine the Human Energy Requirements? This unit focuses on the human energy requirements. The nutrient requirement for Indian population, you may recall studying in the last

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