It could be stated that smooth muscles are the voluntary muscles. They evolve the control of the following functions: <span>breathing, digestion, perspiration, and urination. So option A heartbeat does not belong to this group. In fact it belongs to the cardiac muscles which are involuntary. </span>
Ice floats on water because it is less dense than water. When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions. ... Most substances in their solid form are more dense than their liquid forms.
What is your exact question?
bacteria have the DNA as well as the tools (such as ribosomes and proteins) in order to reproduce themselves. While viruses only contain limited DNA and no not have the necessary tools.
bacteria reproduces asexually. a virus reproduces by invading a host cell casing the cell to make copies of the DNA(RNA). destroying the host cell and releasing the virus.