The conformation, or shape, of a protein determines its function. there are four orders of protein structure:
primary, secondary, tertiary, and quaternary.
which of the following statements is accurate regarding these protein structures?

choose 1

a
proteins in a quaternary structure consist of a simple polypeptide chain.

b
interactions between the r
groups in amino acids form tertiary structure.

c
the two types of primary structure are a helices and pleated sheets.

d
secondary structures are formed by multiple polypeptide chains.

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?