Which statement about polymers is true? a) polymers are substances that have relatively large molecules b) oil and gas are the starting materials for making all polymers c) fabrics such as cotton and silk are synthetic polymers d) all polymers are obtained from living organisms

A) polymers are substances that have relatively large molecules

Explanation:

Polymers are large molecules formed by the condensation or polymerization of small molecules. The small molecule is called a monomer. A monomer is the building block of a polymer.  

For example protein is a polymer which is made up of monomers of amino acids. Polyethylene is a polymer which is made up of monomers of ethylene.  

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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