Answer:
Antibodies
Explanation:
Specific immune responses are triggered by 'antigens'. Antigens are found on the surface of a pathogen and is used to identify a specific pathogen. Antigens trigger the immune system to release cells that attach themselves to Antigens in order to kill off pathogens. These cells attack Pathogens using <em>antibodies</em>
The answer is (B) Brain. This is because the brain is a part of what is known as the nervous system just as the lungs are part of what is known as the respiratory system.
GLUCOSE is an important source of fast, short term energy.
When energy is needed to carry out an intensive work that will last about two minutes, ATP can be generated form glucose via anaerobic process which is called anaerobic glycolysis. This process produces two molecules of ATP and two molecules of pyruvate from one molecule of glucose. The ATP produce is used to carry out the short term work.
Answer:
Blood is not a tissue, so it should be false.
Explanation:
NAD +molecule
Explanation:
Krebs cycle and electron transport chain are important steps in cellular respiration.
In the Krebs cycle, there is a need of NAD+ molecule which is then in Krebs cycle reduced to form a NADH2 molecule.
NADH2 is also an energy currency. It , giving electron in electron transport chain and return to Krebs cycle as NAD+.
Now in the Krebs cycle, it is ready to take electrons again.
