Things I need to work on that I can't remember Flashcards
How does smoking cause disease?
Smoking causes a person’s arteries to become blocked. This prevents blood from flowing properly, and can cause heart attack or stroke.
Food tests - Sugar- ?
Benedict’s solution in hot water bath it turns red/ yellow.
Food tests - Protein - ?
Biuret solution is a mixture of copper sulphate and sodium hydroxide solutions this turns pink/ purple.
Food tests - Lipids - ?
Add ethanol and water and the solution will go milky.
Food tests - Starch - ?
Add some iodine and it goes black.
What is Kwashiorkor?
Protein Malnutrition
What is Pellagra?
Lack of vitamin Niacin
What is Goitre?
Swelling of the throid gland which causes a lump in your neck.
What is Rickets?
Lack of vitamin D and calcium
What is Scurvy?
Lack of vitamin c
What does Alcohol do to you?
Affects your nervous system and damages your liver.
What does Tobacco do to you?
Smoking increases your risk of cancer, as well as lung and heart disease.
What are the 1 of the 2 main layers the leaf is divided into? Palisade Layer
Palisade Layer - Contains cells packed with chloroplasts. This is where most of a plants photosynthesis occurs.
What are the 1 of the 2 main layers the leaf is divided into? Spongy Layer
Spongy layer- Contains air spaces, allowing dioxide to diffuse out of the leaf.
What are the different gene banks?
Seed banks - dried seeds of plants of plants are stored at low temperatures.
tissue banks - buds and other cells from plants are stored.
Cryo banks - a seed or embryo is preserved at very low temperatures, normally in liquid nitrogen.
Pollen banks - pollen grains are stored
DNA: Which scientist carried out experiments using peas and what did they discover?
Gregor Mendel
He noticed that certain characteristics such as height and colour are passed from parents to their offspring.
What is convection?
Happens in liquids and gases. Heat rises. Part of a fluid that is warmer than the rest rises and sets up a convection current.
What is conduction?
Vibrations passed between colliding particles in a solid.
What is radiation?
Thermal energy transferred through radiation. Passes through gases and some solids, it can pass through vacuum.
Put the electromagnetic waves in order from most energy to least energy.
Gamma Rays, x-rays, UV, Visible light, Infrared, microwaves, radio waves
What are the different types of enzymes?
Carbohydrase which break down carbohydrates into sugar molecules.
Protease which break down into proteins into amino acids.
Lipase which breaks down lipids into fatty acids and glycerol. This process is helped by bile.
How is DNA arranged?
Into long strands called chromosomes.
Electromagnets: what is a coil of wire called?
Solenoid
