What happens during the transcription?

a. mRNA is formed by copying a gene on one of the DNA strands
b. mRNA is doubled as it copies the genes on both sides of the DNA
c. DNA is doubled
d. amino acids are brought to the mRNA to construct a new strand

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

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?

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2