What type of macromolecule acts as a catalyst in biological systems?

double stranded found in the nucleus have four nitrogen bases contain deoxyribose sugar contain thymine instead of uracil What important molecule am I? A) DNA B) RNA C) enzyme D) protein

Relative humidity may change due to: (a) a change in temperature-cold air has a low water-vapor capacity, while warm air has a high capacity, or (b) a change in the amount of water vapor in the air.

Material between the connective tissue cells is called?

William gaskin is scheduled for a procedure tomorrow at the diagnostic center. he will receive an infusion of a radiopaque contrast medium, barium sulfate, into the rectum.

Cells perform many functions in living organisms. Which of the following processes occur in cells?

What is a coral distribution

What type of energy is monitored by scientists forecasting future space weather

What will happen to an ecosystem that is experiencing a prolonged drought?

Which is not a normal component of lymph? A) water B) plasma proteins C) red blood cells D) ions

What mineral is most likely used to make an MP3 player? A) talc B) zinc C) quartz D) calcium I'm pretty sure it's either zinc or quartz but I don't know which