B1. characteristics of living organisms Flashcards
name the seven characteristics of living organisms
movement, respiration, sensitivity, growth, excretion, nutrition, reproduction
define movement
action by an organism causing a change of position or place
define sensitivity
the ability to sense stimuli in the environment and make appropriate responses
define respiration
the chemical reactions in cells that break down nutrient molecules and release energy
define growth
the permanent increase in size and dry mass by an increase in cell size or/ and number
define excretion
removal from organisms of waste products of metabolism, toxic materials and substances in excess of requirement
define nutrition
taking in of materials for energy, growth and development
define reproduction
the process that makes more of the same kind of organism
describe the structural differences between a plant and an animal cell
a plant cell has chloroplasts and a cell wall which animal cells don’t have and plant cell’s vacuoles a much bigger than animal cell’s vacuoles