Characteristics Of Life

Question 1

Cellular structures

Answer 1

All life has a cellular structure (all living things are composed of cells)

Question 2

Response

Answer 2

All life can recognize and respond to changes in environmental conditions
- the stimulation of a protein embedded in cell membrane

Question 3

Can grow and develop

Answer 3

All living things can grow and increase in size and mass throughout their life span

Question 4

Metabolism

Answer 4

• Chemical reactions that take place in cells and are responsible for all the actions of organism
• metabolism is the sum of all the reactions in a cell
• viruses lack metabolism, a reason they are not considered to be living

Question 5

Ability to reproduce

Answer 5

All life has capability of reproduction; life will create more life

• it can be sexual (the fusion of haploid sex cells from each parent)
• it can be asexual ( binary fission or an offspring genetically identical to the parent)

Question 6

Homeostasis

Answer 6

• living organism are able to keep their internal environment within a certain stable condition

Question 7

All life has exchange energy and matter

Answer 7

All life exchanges energy and matter with the environment

• all organism use a source of energy for the metabolic activities
• all living things excrete metabolic water waste

Question 8

Adapts and changes over time

Answer 8

This characteristics applies to the next generation, an organism does not adapt within their lifetime