Proteins contain
a. oxygen
b. nitrogen
c. hydrogen
​

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood