nature and variety of living organisms

what characteristics do living organisms share?

mrs gren

common features shown in plants (protoctists), are they multicellular? how does it carry out photosynthesis? cell walls? how do they store carbs? example?

multicellular organisms; their cells contain chloroplasts and are able to carry out photosynthesis; they have cellulose walls; store carbohydrates as starch or sucrose; example: flowering plants, beans

common features shown in animals (eukaryotic ), are they multicellular? how does it carry out photosynthesis? cell walls? how do they store carbs? example?

multicellular; dont have chloroplasts, cant photosynthesise; dont have cell walls; store carbs as glycogen; mammals. most have nervous coordination to respond to changes in environment and move

common features shown in fungi (eukaryotic ), are they multicellular? how does it carry out photosynthesis? cell walls? how do they store carbs? example? other type whats body called what made from? how do they feed?

some are single celled; dont carry out photosynthesis; cell walls made of chitin; store carbs as glycogen; ex is yeast. others have a body called mycelium which is made from hyphae (thread like structures) that contain many nuclei; feed by saprotrophic nutrition, extracellular secretion of digestive enzymes onto food material and absorption of organic products

common features shown in protoctists (eukaryotic ), are they multicellular? how are cells structured? example. Example of pathogenic

microscopic single-celled organisms; some have chloroplasts and are more like plants Chlorella; some are like animal cells Amoeba. A pathogenic example is Plasmodium, responsible for causing maleria

common features shown in bacteria (prokaryotic organism), are they multicellular? describe its cell stucture. can they carry out photosynthesis? example?

they are microscopic single-celled organisms; they have a cell wall, membrane, cytoplasm and plasmids; they lack a nucleus but contain a circular chromosone of DNA; some can carry out photosynthesis but most feed off other living or dead organisms. example - lactobacillus bulgarius and pneumococcus

common features in (viruses), are they living organisms? are they small? are they parastic - what does this mean? who do they infect? lots of shapes and sizes?

they are not living organisms, they are small particles smaller than bacteria;they are parasitic and can reproduce only inside living cells; they infect every type of living organism; they come in loads of different shapes and sizes;

what are pathogens

pathogens are organisms that cause disease. they include some fungi, protoctists and bacteria.