All nucleotides of DNA and RNA contain a a) uracil base
b) thymine base
c) ribose sugar
d) phosphate group

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

Organelles found in plant cells that function through photosynthesis to produce glucose from carbon dioxide and water are called — question 21 options: chloroplasts guard cells photosynthons

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus