So, in metals where the charge carriers (electrons) are negative, conventional current is in the opposite direction as the electrons. ... In other conductive materials, the electric current is due to the flow of both positively and negatively charged particles at the same time.
<span>Titanium bonds to other substances most often with a covalent bond which is considered the strongest type of chemical bonds, a bond which forms mutually between atoms that share an attraction.</span>
Answer:
The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.
Explanation:
Parasympathetic nervous system
Answer:
B.
Explanation:
The movement of substances(ions and molecules) against their concentration gradient is called Active transport.Since these substances are moving against whew they are already in abundance,extra energy is needed for them to move against this gradient.Therefore,ATP.,oxygen is needed by the cells undergoing this transport process to transfer substances into the cells.
It is useful for entry of substances in plants e.g glucose,and for transport of materials in intestine in man
Na-K pumps, exocytosis,endocytosis are examples of this transport process.
It is inhibited by lack of oxygen,cyanide etc.
