Cell structure - Intro and Living Things

Question 1

name the characteristics of living things

Answer 1

movement, reproduction, sensitivity, growth, respiration, excretion, nutrition, homeostasis

Question 2

define reproduction

Answer 2

the ability to produce offspring, passing on genetic information

Question 3

define sensitivity

Answer 3

the ability to respond to changes in both the internal and external environments, maximising chances of survival

Question 4

define growth

Answer 4

all living things increase in size and mass using materials from their food

Question 5

define respiration

Answer 5

the release of energy (stored in molecules of ATP) during the breakdown of food

Question 6

define excretion

Answer 6

the removal of waste products from metabolism

Question 7

define nutrition

Answer 7

all living organisms need food which is assimilated and used as a source of energy

Question 8

define homeostasis

Answer 8

the regulation of the internal conditions of a cell or organism to maintain optimum conditions for function, in response to internal or external changes

Question 9

define organelles

Answer 9

the structures found inside the cell

Question 10

define ultrastructure

Answer 10

the detail revealed by the electron microscope

Question 11

explain the division of labour in a cell

Answer 11

each organelle has a specific role, the organelles work together in a cell for cell’s survival