Answer:
The answer A. Use of Energy
Answer:
Symbiotic soil microbes convert nitrogen gas to a form that the plants can use (NH4+ or NO3-)
If cells couldn't specialize, then the heart and other important organs would not function because if all cells did the same thing, the human would be one massive organ.
Answer:
When respiration occurs without oxygen, lactic acid is produced. Answer is A.
Answer: Antigens
Explanation: The ABO system of blood grouping is based on the basis of the type of antigens that are present in the red blood cells. Erythrocytes is another name for the red blood cells. Antigens are molecules that are capable of eliciting immune response. There are two types of antigens: antigen A and B. Blood type A has only antigen A, blood type B has only antigen B, blood type AB has both antigen A and B while blood type O has no antigen (neither A nor B antigen).
Similarly, Rh trait is determined by the presence or absence of rhesus antigen in the erythrocytes. Rhesus antigen is an antigen first discovered in rhesus monkey. Rh+ indicates the presence of rhesus antigen in the red blood cells while Rh- indicates the absence of rhesus antigen in the red blood cells.
