1 Characteristics of Living Organisms

Question 1

7 criteria for life

Answer 1

Movement
Respiration
Sensitivity
Growth
Reproduction
Excretion
Nutrition

Question 2

Define movement

Answer 2

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

Question 3

Define respiration

Answer 3

the chemical reaction in cells that break down nutrient molecules and release energy for metabolism

Question 4

Define sensitivity

Answer 4

the ability to detect or sense stimuli in the internal or external environment and to make appropriate 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

removal from organisms of the waste products of metabolism, toxic materials and substances in excess of requirement

Question 8

Define nutrition

Answer 8

taking in of materials for energy, growth and development; plants require light, carbon dioxide, water and ions; animals need organic compounds and ions and usually need water