Diversity Of Organisms Flashcards
Define Taxonomy
Taxonomy is the study of the classification of organisms
Name the five kingdom system of classification used to classify living things
Monera
Protista
Fungi
Plantae
Animalia
Define microorganisms
Microorganisms are organisms that can only be seen individually using a microscope
Draw the structure of a monera bacteria
Should include,
Always; cell membrane, storage granual, cell wall, ribosomes, cytoplasm, DNA
Sometimes present; capsule, flagellum, plasmid, mesosome
What is the function of the mesosome
Respiration
Three shapes of bacteria are
Spherical (coccus) eg sore throat
Rod (bacillus) eg tetanus
Spiral (spirillum) eg cholera
Draw the process of reproduction in bacteria
- DNA replicates
- Cell grows and elongates
- Cell divides
( see copy for more detail)
What method do bacteria reproduce asexually by
Binary fission
Draw the production of endospores
See copy
Function of endospores
To help bacteria withstand harsh and unfavourable conditions
Define nutrition
Nutrition is the way in which organisms gets its food
Two types of autotrophic bacteria
Photosynthetic bacteria
Chemosynthetic bacteria
Two types of heterotrophic bacteria
Saprophytes
Parasites
Define autotrophic bacteria
A bacteria that makes its own food
Photosynthetic bacteria
Are bacteria that have chlorophyll on membranes within the cell (not in chloroplast) and use light energy to make food
Chemosynthetic bacteria
Use energy from chemical reactions to make food
Saprophytes
Are organisms that take in food from dead organic matter and are often called decomposers
Parasites
Are organisms that take in food from a live host and usually cause them harm
Five factors that affect bacterial growth
Temperature
Ph
Oxygen concentration
External solute concentration
Pressure
