Which substance can enter a cell by diffusion without having to be digested

What is the number of phosphates in an atp molecule

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

The diagram shows the results when two parents are crossed. the letters represent alleles for a trait that is controlled by three different genes. which best describes this inheritance pattern? multiple allele because a trait is controlled by three different genes polygenic because the offspring have alleles from both parents multiple allele because the offspring have alleles from both parents polygenic because a trait is controlled by three different genes