Protoplasm isoelectric point measurement experiment
Protoplasm's main constituent -- protein for amphoteric compounds, it is in different pH medium, its dissociation is different: when the medium's pH value is mo
Knowledge Base
Laboratory Protocols & SOPs Library
3,200+ step-by-step lab protocols and SOPs for cell culture, staining, PCR, protein work and microbiology, with reagents, conditions and evaluation criteria.
3228 articles
An experiment to determine the osmotic potential of plant tissues
Plant tissue into a series of increasing concentrations of sucrose or mannitol solution, after a certain period of time to achieve osmotic equilibrium, the cell
Experiments on the separation of liquid bubbles
Tear the epidermis of purple onion or radish leaves, put it on a slide, add a little drop of water and then cover the coverslip, observe the cells in the prepar
Catalase activity assay experiment
H2O2 is strongly absorbed at 240 nm, and catalase decomposes hydrogen peroxide, causing the absorbance of the reaction solution (A240) to decrease with reaction
Experiments for the observation of protoplasmic movement
Within living cells, the phenomenon of active movement of protoplasm is collectively known as protoplasmic movement. Protoplasmic movement is one of the importa
Experiments on the substitution of hydrogen and copper for magnesium in chlorophyll
Chlorophyll molecule has a porphyrin ring, its magnesium ions are located in the center of the porphyrin ring, chlorophyll molecule is more unstable, in contact
Experiments on the determination of photosynthetic intensity of plants
According to the similarity of the structure and physiological function of the two sides of the leaf midvein, you can first cut off half of the leaf in the dark
Experiments on the separation of chloroplast pigments by paper chromatography
The various pigments in chloroplast pigments have different chemical structures, and thus their physicochemical properties such as polarity, absorption spectra,
Experiments for the quantitative determination of chlorophyll
According to the absorption spectrum of chlorophyll on visible light, the use of spectrophotometer at a particular wavelength to determine its optical density,