Answer:
D
Explanation:
nitrogenous base, 5-carbon sugar, phosphate group
Immediately, the pathogen has been recognized:
Macrophages acts as the first line of defence by engulfing pathogens identified by antigens which will now present the antibody shape to a helper T cell.
The Helper T cells produce a signal to plasma and Memory B cells to yield antibodies that attach to the antigens. The cytotoxic cells that leads to cell death are activated by the helper T cells.
Antibodies helps to immobilize pathogen for macrophage to feed on.
if the pathogen comes back a 2nd time the memory cells helps in quick and efficient recovery by producing the specific B and T cells for the antigen.
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B. when the Southern hemisphere is pointed towards the sun. <span />
Answer:
The correct answer is - specific heat.
Explanation:
Water has an important property named specific heat, which is an amount of heat required to increase the temperature of a given amount of a substance. So, to increase the temperature of 1 g water to one degree, the amount of heat is required is the specific heat of the water.
Specific heat helps in regulating the change in temperature of the earth due to its requirement of a proper amount of heat to increase the temperature of water to extent of boiling similar happen in colling as it is required to release a proper amount of heat.
Thus, the correct answer is - specific heat.
