Characteristics of a living organism

Question 1

name the 7 life process?

Answer 1

they need nutrition - growth and repair
they respire
excrete their waste - C02, urine must be removed
they respond to their surroundings
they move - to water/ food. away from predators
they control there internal conditions
they reproduce
they grow and develop

Question 2

describe the features of plants

Answer 2

multicellular
have chloroplasts (they can phtotsythensise)
have a cell wall (made of cellulose)
store carbohydrates as sucrose or starch
example : Maize

Question 3

describe the features of Animals

Answer 3

multicellular
no chloroplasts
no cell walls
store Carbohydrates in the form of glycogen

Question 4

describe the features of fungi

Answer 4

some single-celled
others have a body called mycelium, which is made of Hyphae (thread-like structures) which contain lots of nuclei
cell wall made of chitin
most feed by saprotrophic nutrition - they secrete extracellular enzymes into the area outside their body to dissolve their food so they can absorb nuitensts
store carbohydrates as glycogen.
example : yeast

Question 5

describe the features of protoctists

Answer 5

single-celled
microscopic
some have chlroplasts
example: chlorella

Question 6

describe the features of bacteria

Answer 6

single-celled
microscopic
no nucleus
circular chromosome of DNA
some can photosynthesise

Question 7

describe the features viruses?

Answer 7

these are particles, rather than cells
parasite : depends on another organism to produce
infect all types of living organisms
example: tobacco, HIV