Biochemical changes associated with senescence, Biology

Biochemical Changes Associated with Senescence

When senescence begins many physiological and biochemical changes take place. For example, one of the important changes observed is in chlorophyll content. Its level starts declining. As a result, the capacity of CO2 fixation also declines and the overall structure of chloroplast in terms of organisation of thylakoids gets disturbed. For quite some time the rate of respiration remains constant but later it also drops and the supply of ATP is reduced. It is also shown that a number of degradative enzymes like proteases (hydrolyse proteins), ribonucleases (hydrolyse nucleic acids), β-glucan hydrolases (which loosens cell wall), chlorophyllase (which degrades chlorophyll) are produced which result in catabolism and finally over a period of time, the plant succumbs and dies.

Posted Date: 1/17/2013 8:01:55 AM | Location : United States







Related Discussions:- Biochemical changes associated with senescence, Assignment Help, Ask Question on Biochemical changes associated with senescence, Get Answer, Expert's Help, Biochemical changes associated with senescence Discussions

Write discussion on Biochemical changes associated with senescence
Your posts are moderated
Related Questions
Determine the biologic response The biologic response can include: i) Metabolic disturbance. ii) Inflammatory response iii) Immune response iv) Mutagenesis v) Ca

classification of organisms in phylum protozoa according to their class,order,family,genus,species.

Which of the following characteristics is not shared by typical birds and mammals? A) Four chambered heart B) Milk production C) Four limbs D) Endothermy E) Insulating skin structu

Determine Functions of Zinc in the Body? Zinc is an essential component of a large number of enzymes participating in the synthesis and degradation of carbohydrates, lipids, pr

Total Artificial Heart :  Jarvik seven was the first successful total artificial heart supporting the patient for 112 days. The disadvantage is that the patient has to be connecte

Transport of Gases in Blood We know that two types of gas exchanges are constantly occurring in the animal body--one at the inter phase of the respiratory membrane and externa

Define the factors effect the Quantity of Human Milk? A large healthy baby who can vigorously suck will induce and obtain much more milk from its mother than a small, sickly or

Explain Metameric in detail. A body plan which consists of a series of identical units, metameres, repeated down longitudinal axis of the animal. Every metamere contains identi

Infectious bovine rhinotracheitis (IBR) The disease is caused by a Bovine Herpesvirus -I belonging to the family Herpesviridae and subfamily Alphaherpesvirinae. It is a DNA vi

Problem 1: Show the aims and applications of Epidemiology. Definition of Epidemiology. List aims of Epidemiology List applicationsof Epidemiology Problem 2