Section 1: Variety Of Living Organisms

Question 0

Features of plants

What do they store carbs as?

Answer 0

Multicellular organisms
Cells have chloroplasts-> photosynthesis
Cellulose cell walls
Store carbohydrates as starch or sucrose

Eg. Flowering plants and legume

Question 1

What are the characteristics of living things?

Answer 1

Movement
Respiration 
Sensitivity (response to stimuli) 
Growth 
Reproduction 
Excretion 
Nutrition 
(Controlling internal environment)

Question 2

Features of animals

Store carbs as?

Answer 2

Multicellular
No chloroplasts, no cell walls
Carbohydrate- glycogen
Nervous coordination- can move

Question 3

Fungi
Structure 
Nuclei? 
Cell walls made of? 
Chloroplasts? 
Feed?

Answer 3

Body organised into mycelium made from thread- like structures of hyphae-> contain several nuclei
Cell walls made of chitin
No chloroplasts
Feed by extra cellular secretion of digestive enzymes onto food material and absorption of organic products-> saprotrophic nutrition

Question 4

Bacteria
Structure
Nuclei?
Feed?

Answer 4

Microscopic single cell
Cell wall, cell membrane, cytoplasm and plasmids
No nucleus but have circular chromosome of DNA
Some can photosynthesis, most eat living/ dead organisms

Eg. Lactobacillus

Question 5

Protoctists
Structure
Nuclei?
Features

Answer 5

Microscopic single cell
Nucleus
Amoeba has animal cell features whilst chlorella have plant cell features
Pathogen- plasmodium

Question 6

Virus
Size
Reproduction
Structure

Answer 6

Smaller than bacteria, parasitic
Reproduce only inside living organism (in a host cell)
No cellular structure- protein coat, nucleic acid DNA or RNA

Eg. Influenza virus

Question 7

Pathogen define

Answer 7

A bacterium, virus or other microorganism that can cause disease