Unit 1 - Characteristics & Classification Of Living Organisms

Question 1

What are the 7 ways to classify organisms? (MRS GREN)

Answer 1

• Movement
• Respiration
• Sensitivity
• Growth
• Reproduction
• Excretion
• Nutrition

Question 2

Movement

Answer 2

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

Question 3

Respiration

Answer 3

The chemical reactions in cells that break down nutrient molecules and release energy for metabolism.

Question 4

Sensitivity

Answer 4

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

Question 5

Growth

Answer 5

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

Question 6

Reproduction

Answer 6

The processes that make more of the same kind of organism.

Question 7

Excretion

Answer 7

Removal from organisms of the waste products of metabolism, toxic materials, and substances in excess of requirements.

Question 8

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.

Question 9

What is a species?

Answer 9

A group of organisms that can reproduce to produce fertile offspring.

Question 10

What’s the binomial system?

Answer 10

An internationally agreed system in which the scientific name of an organism is made up of two parts showing the genus and species.