Which statement is the correct explanation of the function of macromolecules in carrying out a major function in the cell? A= Lipids control the rate of cell reactions B=Carbohydrates form waterproof coverings. C= Proteins are the main source of energy for the cell (wrong) D=Nucleic acids store and transmit hereditary information.

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

Which describes the changes in the earths motion?