Polymers are made up of which of the following?
a. atoms
b. electricity
c. threads
d. pigments

A. Atoms

Explanation:

Polymers are the complex compounds that are made when large number of one or more than one type of atoms are bonded together. Protein is a polymer of amino acids as 20 different types of amino acids are bonded together by peptide bond to make a long polypeptide chain which is called as proteins. So, atoms are bonded together to make polymers.

all answers true and false

explanation:

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.