definitions

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

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

Question 3

sensitivity

Answer 3

the ability to detect and
respond to changes in the internal or external
environment

Question 4

growth

Answer 4

a permanent increase in size and
dry mass

Question 5

reproduction

Answer 5

the processes that make
more of the same kind of organism

Question 6

excretion

Answer 6

the removal of the waste
products of metabolism and substances in excess of requirements

Question 7

nutrition

Answer 7

taking in of materials for energy, growth and development

Question 8

species

Answer 8

a group of organisms that can reproduce to produce fertile offspring

Question 9

binomial naming (of species)

Answer 9

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

Question 10

classification systems

Answer 10

aim to reflect evolutionary relationships

Question 11

vertebrates

Answer 11

animals with a backbone

Question 12

invertebrates

Answer 12

animal without a backbone

Question 13

arthropods

Answer 13

invertebrates with jointed legs

Question 14

diffusion

Answer 14

the net movement of particles from a region of their higher concentration to a region of their lower concentration (down a concentration gradient) as a result of their random movement.

Question 15

osmosis

Answer 15

the net movement of water molecules from a region of lower higher water potential (dilute solution) to a region of lower water potential (concentrated solution), through a partially permeable membrane.

Question 16

active transport

Answer 16

the movement of particles through a cell membrane from a region of higher concentration (down a concentration gradient), using energy from respiration.