Which of the following serves as a vital source of nitrogen for the body?

a. carbohydrates
b. lipids
c. proteins
d. trace elements


c. proteins

Biology & Microbiology

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An oncogene may promote cancer by keeping the cell growth pathway in the off position

Indicate whether the statement is true or false

Biology & Microbiology

Blood and lymph may carry

A. antibodies. B. complement. C. lysozyme. D. interferon. E. All of the choices are correct.

Biology & Microbiology

At the bottom or base of an energy pyramid are the ____

a. primary consumers b. primary producers c. secondary consumers d. secondary producers e. tertiary consumers

Biology & Microbiology

What is not an accessory organ of the human digestive system?

What will be an ideal response?

Biology & Microbiology