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.

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen