Shyam took a thin layer of onion peel with a drop of water then he stained the sample with the solution. After staining, he washed with water and kept it on a clean surface of slide and with the help of blotting paper, he removed the excess of water. Then he transferred it on a slide and added a drop of glycerine and placed the coverslip on the glass slide to observe the cells under a microscope. 3(a). Coverslip is put on the mounted material on a slide very gently to Avoid oozing of stain
Avoid oozing of glycerine
Avoid entry of air bubbles
Avoid the crushing of mounted materials​

What is the main fuel source for the work of the cell

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?

Ahuman female has a special pair of chromosomes that are represented by the letters a) xx. b) xy. c) yy. d) xz.