Cells come from other cells. Question 2 options:

True

Never

False

Sometimes

True

Explanation:

this is part of the cell theory

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.