Download KPK Board Class 9 Biology Notes of Chapter 7, Definition, Meaning, History, BISE KPK 9th Class, Grade ix, ssc part-1 for all kpk boards short questions, long questions, mcqs, and chapters overview.
Grade ix Bioenergetics notes for kpk Unit 7 Pdf downloads
Q1: Define Bioenergetics, Metabolism, type of Metabolism and also write the importance of
Bioenergetics?
Ans: Bioenergetics;
Definition:
Bioenergetics is the study of energy relationships and energy transformations(conversations) in
living organisms.
Metabolism:
Meaning:
The word metabolism is derived from a Greek word meaning “change”.
History:
Concept of metabolism was first of all given by Ibn-e-Nafees.
Definition:
The sum of all Chemical reactions that takes place in living organisms is called metabolism.
Types of Metabolic reactions:
There are two types of metabolic reaction.
i) Endergonic reaction (anabolism)
ii) Exergonic reaction (catabolism)
i) Endergonic reaction:
Definition:
The reaction which required energy is called endergonic reaction. (OR)
The reaction in which energy is stored is called endergonic reaction.
Example: Respiration
Importance of Bioenergetics:
