Enzymes are a special type of protein that speeds up biological reactions. How do they accomplish this task?Immersive Reader (1 Point)
A. They are able to operate at any pH value.
B. They lower the activation energy of reactions.
C. They form peptide bonds between amino acids.
D. They decrease the number of collisions in the reacting substances.

B: they lower the activation energy of reactions

Explanation: just took the test

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

sex cells are usually half's then they find another half and make a fertilize egg