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
that break down nutrient molecules in living cells
to release energy for metabolism

Question 3

Sensitivity:

Answer 3

the ability to detect or sense stimuli
in the internal or external 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

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

Question 7

Nutrition:

Answer 7

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

Question 8

Species -

Answer 8

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

Question 9

Binomial system of naming species -

Answer 9

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

Tissue -

Answer 10

A group of cells with similar structures, working together to perform a shared function.

Question 11

Organ -

Answer 11

A structure made up of a group of tissues, working together to perform specific functions.

Question 12

Organ System -

Answer 12

A group of organs with related functions, working together to perform body functions.

Question 13

Diffusion -

Answer 13

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 14

Osmosis -

Answer 14

The net movement of water molecules

from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution),

through a partially permeable membrane.

Question 15

Active transport -

Answer 15

The movement of particles through a cell membrane
from a region of lower concentration to a region of higher concentration
using energy from respiration.