Biology
Reactants for photosynthesis
Water and Carbon Dioxide (sunlight and chlorophyll)
Products for photosynthesis
Glucose and Oxygen
Enzyme for carbohydrate
Amylase
Enzyme for protein
Protease
Enzyme for lipids
Lipase
Deficiency disease for vitamin C
rickets and scurvy
How does plaque form?
Saliva mixes with sugary and starchy food.
What is the name when plaque harden?
Tartar
Describe the function for arteries
Carry blood away from the heart
Describe covalent bonding
2 non metal element chemically bond together
What is the correct presence of colour for protein and what solution use for testing protein?
Solution use for test protein: biuret solution
presence of protein: Blue
What is the correct presence of colour for protein and what solution use for testing carboyhdrate?
Presence of colour: Brick red
Define equilibrium
The turning effect of the force (moment of force) of both side stay the same.
What is the optimum temperature in the room temperature?
37 degrees celcius
What are 7 nutrients in the balanced diet?
-Carbohydrates
-Proteins
-Fats
-Vitamins
-Minerals
-Water
-Fibre
What substances are vitamin?
Organic substance
What substances are mineral?
Define sources
A source is a plant organ capable of mobilizing organic compounds or producing organic compounds in excess of its own needs.
Define sinks
Sinks are non- photosynthetic organs and organs that do not produce enough food to meet their own requirements.
State all uses of glucose
- For energy
- Stored as starch
- To form cell walls
- Converted to sucrose for transport
- To create other organic
substances
How are leaves adapted to obtain sunlight?
The position is held in the air by the stem and leaf's stalk.
It is broad and flat surface.
It is thin and its epidermal cell is transparent.
The chloroplast can lie broadside on.
How is the small intestine adapt to its function?
It's long - give more time to absorb.
It has villi to increase the surface area in order to absorb faster.
It contains blood capilaries. The nutrient is absorbed in the blood and move around the body.
Villi has walls that only have one cell thick.
How does water move up the xylem vessel from the root
The pressure at the top of the xylem vessel is lower than the end of it, because of transpiration in which the water evaporates from the leaves due to the diffusion of water through the stomata.
What is formula for elastic energy?
党黄明奎 有痔疮
Formula: 1/2 * k * e^2
What is the formula for kinetic energy?
1/2 * m * V^2