You do an experiment in which you use acetyl-coa with 14c label on both carbons of the acetyl group. you let this run through one round of the citric acid cycle with unlabeled oxaloacetate, and monitor the production of 14co2. at which reactions (labeled by the enzyme that catalyzes them) do you expect to detect 4co2? a) alpha ketoglutarate dehydrogenaseb) succinyl coa synthetasec) no reactions will yield thisd) aconitase

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?