Which of the following statements is true of cholesterol in the bloodstream? a. too much ldl can cause atherosclerosis and heart disease. b. all cholesterol is bad for arterial health. c. hdl is known as "bad cholesterol." d. statins raise the amount of ldl in the bloodstream and combat atherosclerosis

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

25. what does meiosis create? haploids or diploid? somatic cells or gametes?

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.