B1. Characteristics of living organisms

Question 1

Define movement

Answer 1

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

Question 2

Define respiration

Answer 2

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

Question 3

Define sensitivity

Answer 3

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

Question 4

Define growth

Answer 4

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

Question 5

Define reproduction

Answer 5

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

Question 6

Define excretion

Answer 6

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

Question 7

Define nutrition

Answer 7

as 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 8

Living organism are made of what?

Answer 8

cells