Which of the following correctly describes a nucleus? All cells have a nucleus
The nucleus is where mitosis occurs
The nucleus gives the cell energy
The nucleus is where plants make their own food

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.

What does this experimental investigation lack