Actin and myosin are proteins that interact to produce movement in muscle cells. would their genes be turned on or off in brain cells? explain

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.

What is the difference between a scientific hypotheses and a scientific theory?

What happens to the average kinetic energy of water molecules as water freezes?