Total number of amino acids discovered so far in cells and tissues are______________?

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About __________ of the body weight of a mammal is water ?

A. 60% B. 65% C. 70% D. 75%...

Which disease can be controlled by vaccination?

A. Measles B. Cancer C. Diabetes D. Heart attack...

Which of the following kidney stones are most common?

A. Calcium oxalate B. Calcium phosphate C. Uric acid D. All of these...

Which of the following statement about Homeostasis is incorrect?

A. There is a definite control system that regulates the homeostatic activities B. Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment C. Because of this the fluctuations of internal environment are of extremely narrow range as compared to that of external environment D. All are correct...

Higher vascular plants are also called__________?

A. flowering plants B. seed plants C. ferns D. none of these...