Question

Plasmids
(1) Are circular protein molecules
(2) Are required by bacteria
(3) Are tiny bacteria
(4) Confer resistance to antibiotics

Answer 1

plasmids are small circular double stranded DNA molecule that are distinct from bacterial DNA and are mostly for resistance to antibiotics.that's why these are widely useful in biotechnology

Answer 2

Answer4):confer resistance to antibiotics

Explanation:This is the antibiotic resistance of plasmids in prokaryotes that protect them from antibiotics. Different plasmids have different resistance genes which are further used as a selectable marker in genetic engineering as a means of differentiation between transformed and non transformed cells.