Which cell structure is found in both plant and animal cells?
chloroplast
lysosome
centrioles
mitochondria
cell wall
Which of the following elements can be found in all organic molecules built by the cells of the living world?
sodium and oxygen
calcium and potassium
carbon, hydrogen, and oxygen
calcium, helium, silver, magnesium, and copper
nitrogen and iron
Starch, sugar, fructose, and cellulose are all examples of which group of organic molecules?
lipid
nucleic acids
protein
carbohydrates
Lipids perform which of the following functions in the living world?
the molecule that forms enzymes
contains the instructions for building proteins
build cell membranes
cell recognition
form transport channels through the cell membrane