B1 Characteristics of living organisms

Question 1

Movement

Answer 1

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

Question 2

respiration

Answer 2

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

Question 3

sensitivity

Answer 3

the ability to detect or sense stimuli and respond to changes in the environment and to make appropriate responses

Question 4

growth

Answer 4

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

Question 5

reproduction

Answer 5

the processes that make more of the same kind of organism

Question 6

excretion

Answer 6

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

nutrition

Answer 7

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