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