實驗物料詳解

某些化學物或物料的出現,可能暗示某些特定的課程內容,本頁將生物科常用的實驗物料,依英文字母次序表出該化學物或物料通常的改變、顏色及測試名稱等資訊,供同學作參考。

 

A  

Agar, gel

To demonstrate the effect of auxins on plant growth To culture bacteria ( Agar surface becomes cloudy ) 

Related Topics : Tropism, Microorganism


Alcohol

To extract chlorophyll from the leaves The leaf decolourized 

Related Topics : Photosynthesis, Starch, Food test


Anhydrous CuSO4

To show the presence of water vapour White to blue 

Related Topics : Photosynthesis, Respiration


Animal (snail, grasshopper, mouse)

Aerobic respiration, small mammal is preferred (higher metabolic rate)

Enzyme in alimentary canal

Related Topics : Respiration, Enzyme

  

B  

Benedict's test

To test for reducing sugars,

Test for non-reducing sugars after Acid hydrolysis

Observation:Blue liquids to orange precipitate 

Related Topics : Food test Enzyme, Photosynthesis, Osmosis


Bicarbonate indicator ( Hydrogen carbonate indicator )

To determine the concentration of carbon dioxide

Observation:Red <> Orange <> Yellow

Related Topics : Photosynthesis, Respiration


Biuret test

To test for protein or enzyme

Observation:Blue to purple

Related Topics : Food test Enzyme


Boiling, sterilization

To kill the microorganism

To prevent microorganism respiration

To eliminate the dissolved oxygen in water

Related Topics : Respiration 

   

C  

Calcium chloride

To absorb water vapour

Related Topics : Respiration, Tropism


Clinostat

To eliminate factor for plant growth

Related Topics : Tropism


Clip

Control air pressure

Related Topics : Respiration, Transpiration


Cotton wool

Separated system, support, prevent small animal escape

Related Topics : Respiration, Germination

 

D  

DCPIP (2,6-dichlorophenol Indophenol)

To test for vitamin C

Observation:Blue to colourless

Related Topics : Food test


Dry cobalt chloride paper

To show the presence of water vapour

Observation:Blue to pink

Related Topics : Photosynthesis, Respiration, Tropism 

 

E  

Eosin / Red ink

To stain the xylem tissues of plant

Observation:Some cells stained to Red colour

Related Topics : Transport in plant 

 

F    

 

G  

Germinating seed

Germinating seed can respire and growth

Related Topics : Respiration


Glucose

Respiratory substance, It can affect water potential, Diabetes

Related Topics : Respiration, Osmosis, Excretion


Grasshopper, mouse, snail

Aerobic respiration

Enzyme in alimentary canal

Related Topics : Respiration, Enzyme

 

H  

Hydrilla (Aquatic green plant)

Related Topics : Photosynthesis


Hydrogen peroxide

For enzyme 'catalase', produce oxygen

Related Topics : Enzyme, Respiration

 

I  

Iodine solution

To test for starch

Observation:Light brown to blue black

Related Topics : Photosynthesis, Food test Enzyme

 

J    

 

K    

 

L  

Light-proof, black box, dark room, aluminum foil

To provide a condition without light

Observation:Etiolation

Related Topics : Tropism, Photosynthesis


Lime water (Calcium Hydroxide)

To test for carbon dioxide

Observation:From clear to milky

Related Topics : Photosynthesis, Respiration

 

M  

Moist cotton Wool

Provide moisture for plant growth

Related Topics : Tropism


Mouse, snail, grasshopper

Aerobic respiration

Enzyme in alimentary canal

Related Topics : Respiration, Enzyme

 

N    

 

O   Oil, Paraffin oil, Vaseline

To seal the stomata or apparatus (air-tight)

To prevent water evaporation

To prevent atmospheric gas dissolve in solution

Related Topics : Photosynthesis, Transpiration, Respiration 

 

P  

Potato, vegetable, leaf

Provide Catalase

Plant cells for osmosis

Related Topics : Osmosis


Potassium hydroxide, Soda Lime, Sodium hydroxide

To absorb carbon dioxide

Related Topics : Photosynthesis, Respiration 


Paraffin oil, Vaseline, Oil 

To seal the stomata or apparatus (air-tight)

To prevent water evaporation

To prevent atmospheric gas dissolve in solution

Related Topics : Photosynthesis, Transpiration, Respiration 

 

Q    

 

R  

Red blood cell

H(a)emolysis ( osmosis )

Observation:Oxygenated blood is bright red colour/ Deoxygenated blood is dull red colour

Related Topics : Osmosis, Circulation

 

S   Snail, grasshopper, mouse

Aerobic respiration

Enzyme in alimentary canal

Related Topics : Respiration, Enzyme


Soda Lime, Sodium hydroxide, Potassium hydroxide

To absorb carbon dioxide

Related Topics : Photosynthesis, Respiration


Sodium Bicarbonate in water ( Sodium hydrogen carbonate )

To supply water plants carbon dioxide

Related Topics : Photosynthesis, Respiration


Sodium oxalate, Sodium citrate

To remove Calcium ions and prevent blood clotting

Related Topics : Circulation


Sterilization, boiling

To kill the microorganism

To prevent microorganism respiration

To eliminate the dissolved oxygen in water

Related Topics : Respiration

 

T  

Thermometer

Detect the change of temperature

Related Topics : Respiration, Burning of food, Germination


Thermos flask

Prevent heat loss, Separated system

Related Topics : Respiration, Germination

 

U    

 

V  

Vaseline, Oil, Paraffin oil

To seal the stomata or apparatus (air-tight)

To prevent water evaporation

To prevent atmospheric gas dissolve in solution

Related Topics : Photosynthesis, Transpiration, Respiration

 

W    

 

X    

 

Y  

Yeast

Aerobic/ anaerobic respiration

Related Topics : Respiration

 

Z    

凡事都可行.但不都有益處。凡事都可行.但不都造就人。無論何人、不要求自己的益處、乃要求別人的益處。 【哥林多前書10:23-24】

 

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