7. Which of the following is an example of an element? A. Iron
B. Hydrogen peroxide
C. Salt
D. Water

Which organelle breaks down sugar molecules that supply energy to the cell ?

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

What is required in the genotype of an individual to show a recessive trait? a.two recessive alleles b.at least one recessive allele c.no recessive alleles