Stomata are small pores present on the surface of leaves and stem in plants. There are specialized cells named as gaurd cells which facilitates the opening and closing of stomatal pores. The two main functions of stomata are:
1. Gaseous exchange : It allows the uptake of carbon dioxide which is an important ingredient for conducting photosynthesis and release of oxygen to the external environment which is a product of photosynthesis.
2. Prevents the loss of water: Stomata remains closed during dry and warm external environmental conditions so as to prevent water loss.
In ordinary plants if stomata remains closed than there will be no gaseous exchange therefore, photosynthesis will not take place in these plants. Closed stomata will also prevent loss of water in dry and warm external conditions.
first step in protein production is the transcription of DNA to mRNA in the nucleus. the next organelles involved are ribosomes. if the protein is not destined to the cell membrane the mRNA is translated on a cytoplasmic free-floating ribosome
The nurse found a transitory
short and long term memory loss and confusion. Electroconvulsive therapy is a kind of a
procedure that done under general anesthesia,
this procedure can changes the brain chemistry by giving the patient a
small electric current that will pass through the brain intentionally making a
small fast seizure. That’s why there are some side effects is memory loss, some
memory problem improve after the treatment ends.
Activation energy is required to start a chemical reaction. Activation energy is the energy needed to allow the reactant to react. Activation energy is measured in Joules (J).
