The food cycle starts with basic chemicals in the soil and ends with: A. decomposers producing new ingredients for plant growth
B. bacteria
C. plants which start the food chain again
D. animals

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant

In what cells is the human genome located?