Which of the following structural features is common to cellulose, chitin, and peptidoglycan?

a) they can all form bonds between polymer chains that stabilize parallel strands.
b) they are all composed of glucose in either the α or β form.
c) they all contain peptide bonds.
d) they are all composed of highly branched fibers.

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration

20 the compound al(nh3)2 has atoms of nitrogen.