The Meselson and Stahl's experiment provided conclusive evidence for the semiconservative replication of DNA in E. coli . What pattern of bands would occur in a CsCl gradient for conservative replication

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

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?