These molecules can be saturated or unsaturated O Carbohydrate
O Lipids
Proteins
Nucleic Acid

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

Which of the following statements about protists are true? a. they are typically found in moist environments. b. they are all unicellular. c. they have a nucleus. d. they are all multicellular.

What kinds of molecules can pass through the cell membrane without any problem?