Biology - biological molecules

Food tests

when testing for starch, if starch is present what colour will the sample change to?

blue-black

what reagent is used to test for starch?

iodine

what colour will the sample turn if glucose is present

yellow, orange or brick red

what reagent is used when testing for Glucose

benedicts solution

what colour will the sample turn if protein is present?

Purple

What reagent is used when testing for protein?

biurets solution

What colour will the sample turn if lipid present?

cloudy

what reagent is used when testing for lipid?

ethanol

What enzyme breaks down protein?

protease

What enzyme breaks down starch?

amylase

What enzyme breaks down lipids?

lipases

What is an example of a protoctist?

chlorella (plant cell like) and Amoeba (((animal cell like - lives in pond water)

What is an example of bacteria

Lactobacillus Bulgaricus - can be used to make milk go sour and turn into yoghurt. It is rod shaped and Pneumococcus (spherical in shape)

What is an example of a virus?

influenza virus, tobacco mosaic virus(makes the leaves of tobacco plants discoloured by stopping them from producing chloroplasts and HIV

What is a pathogen?

pathogens are organisms that cause disease they include some fungi, protoctists and bacteria viruses are also pathogens (even though they are not living organisms)

Example of protoctist pathogen

plasmodium which causes malaria

Example of a bacterium pathogen?

pneumococcus which causes pneumonia

Example of a virus pathogen?

influenza virus which causes flu and HIV which causes aids

Give an example of a fungi

yeast - this is a single celled fungus and mucor this is multicellular and has a mycelium and hyphae