Definition:
"Capillaries are small hair like microscopic structure through which only one blood cell can pass at a time".
Explanation:
Capillaries are about 8-10 um in diameter, forming a network through put the body tissues, and exchange of oxygen, nutrient and waste between the blood and body tissues occur though capillaries.
As a connection between arterial and venous system:
Capillaries conncet arterial system with venous system because it is the ultimate destination of arterial blood from the heart and the starting point for the flow of venous blood back to heart.
In chemical evolution happens, all the required environment was there ! But now, the exact environment is not present !
the environment concludes: H2 (not present due to light weight) , methane, NH4 and water vapour ! and most important that is not present is the 40,000 volts of lighting, that was normal at that moment !
False, Antonie van Leeuwenhoek was experimenting with his own design of microscope technology while observing microscopic organisms. Scientific microbiology developed in the 19th century through the work of Louis Pasteur.
Venus's atmosphere is mainly made up of carbon dioxide.
Answer: 2
Answer:
CFTR protein facilitates the transport of chloride ions and water across the cells. Genetic defect in the CFTR gene results in defective protein synthesis. This defect in CFTR protein disrupts the chloride and water channel across the cell. The CFTR protein acts as a channel across the cell membranes which are specialized to produce mucus, sweat, tears etc. Failure of transport channel will result in symptoms like secretion of thick mucus. This mucus can obstruct the airflow and glands resulting in symptoms of cystic fibrosis.
