Practical 1 (Sept 17th) Flashcards
(26 cards)
Name the 4 organic compounds
Carbohydrates, Lipids, Proteins and Nucleic Acids
Testing Carbohydrates Requires:
Benedict’s
Reducing Sugars require Hydrochloric acid
What do you use to test for starches?
Lugoli’s (Iodine)
What do you need to test Lipids?
Chromatography paper
What do you need to test Protiens
Biurets
Hydrochloric acid tests for:
Reducing sugars in carbohydrates
Lugoli’s tests for:
Starches
Benedicts test for
Sugars in carbohydrates
Chromatography paper tests for
Lipids
Biurets tests for
Protien
What colors test positive for carbohydrate sugars?
Red, orange, yellow
What colors test positive for reducing sugars test?
Red, orange, yellow
Whats color indicates positive tests for starches
Black/ Blue
What indicates a positive test for lipids?
Oil spot
What color indicates a positive test for proteins ?
Purple/Lavender
Define Hypertonic
More concentrated
What is the word for “more concentrated”
Hypertonic
Define Hypotonic
Less concentrated
Whats the word for “less concentrated”
Hypotonic
Define Isotonic
Equal concentration
Whats the word for “equal concentration”
Isotonic
What does it mean when a membrane is “permeable” ?
Things can pass through it
What does it mean when a membrane is “selectively permeable”
Only certain things can pass through it
What is Osmosis?
A type of diffusion where particles seek equilibrium
