Table of Contents
Which life functions provide the energy needed for growth?
Respiration. Respiration is a life process where cells gain energy by breaking down nutrient rich macromolecules in order to create adenosine triphosphate (ATP). ATP stores energy for the cell to use in chemical bonds. Energy is released when these chemical bonds are broken down.
What life function supplies all of the raw materials for an organism?
Living things feed. Food is the material from which organisms through respiration obtain the energy required to sustain life and carry out all the other defining functions of living things. Food also provides the raw materials for growth and repair. The study of food and feeding is called nutrition.
Which life function provides the energy for all the other life functions?
The blood circulatory system is responsible for carrying out this life function, but in plants, vascular bundles carry these materials through the organism. This function provides the organism with energy needed to do other life functions.
What is the life function that involves a response to a change in the environment?
Responsiveness. Responsiveness is the ability of an organism to adjust to changes in its internal and external environments. An example of responsiveness to external stimuli could include moving toward sources of food and water and away from perceived dangers.
What is the life function growth?
Growth. Growth refers to an increase in size either through an increase in the number of cells or through an increase in the size of each individual cell. In order for growth to occur, anabolic processes must occur at a faster rate than catabolic processes.
What is the life function respiration?
Respiration. Respiration refers to all the processes involved in the exchange of oxygen and carbon dioxide between the cells and the external environment. Cellular respiration deals with the cell’s utilization of oxygen and release of carbon dioxide in its metabolism.
How growth takes place in an organism?
The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis. Hence, a cycle consisting of cell growth and cell division is established.
Which process is mainly involved in the growth of an organism?
All living organisms are capable of growing and producing offspring. All eukaryotic organisms—including aquatic plants and algae—grow through the process of mitosis. Mitosis is a process where one cell divides into two cells (Fig. 2.46).