I: 1 - Characteristics of living organisms

Question 1

List the seven characteristics of living organisms

Answer 1

MRS GREN

• movement
• respiration
• senstivity
• growth
• reproduction
• excretion
• nutrition

Question 2

Define

movement

Answer 2

An action by an organism or part of an organism causing a change of position or place

Question 3

Define

respiration

Answer 3

The chemical reactions that break down nutrient molecules in living cells to release energy

Question 4

Define

sensitivity

Answer 4

The ability to detect or sense changes in the environment (stimuli) and to make responses

Question 5

Define

growth

Answer 5

A permanent increase in size and dry mass by an increase in cell number or cell size or both

Question 6

Define

reproduction

Answer 6

The processes that make more of the same kind of organism

Question 7

Define

excretion

Answer 7

The removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements

Don’t confuse with egestion!!

Question 8

Define

nutrition

Answer 8

The taking in of nutrients which are organic substances and mineral ions, containing raw materials or energy for growth and tissue repair, absorbing and assimilating them.