객관식
Which of the following descriptions best fits the class of molecules known as nucleotides?
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목차
- 1. Introduction to Biology2h 40m
- 2. Essential Chemistry for Biology2h 43m
- 3. The Molecules of Life2h 18m
- 4. A Tour of the Cell2h 7m
- 5. The Working Cell1h 29m
- 6. Cellular Respiration: Obtaining Energy from Food1h 8m
- 7. Photosynthesis: Using Light to Make Food1h 44m
- 8. Cellular Reproduction: Cells from Cells2h 55m
- 9. Patterns of Inheritance2h 53m
- 10. The Structure and Function of DNA4h 19m
- 11. How Genes Are Controlled55m
- 12. DNA Technology33m
- 13. How Populations Evolve6h 12m
- 14. How Biological Diversity Evolves3h 29m
- 15. The Evolution of Microbial Life2h 8m
- 16. The Evolution of Plants and Fungi1h 58m
- 17. The Evolution of Animals3h 25m
- 18. An Introduction to Ecology and the Biosphere2h 3m
- 19. Population Ecology2h 9m
- 20. Communities and Ecosystems4h 29m
- 21. Unifying Concepts of Animal Structure and Function2h 17m
- 22. Nutrition and Digestion1h 2m
- 23. Circulation and Respiration1h 46m
- 24. The Body's Defenses1h 14m
- 25. Hormones1h 4m
- 26. Reproduction and Development1h 2m
- 27. Nervous, Sensory, and Locomotor Systems2h 57m
- 28. The Life of a Flowering Plant1h 50m
- 29. The Working Plant2h 33m
3. The Molecules of Life
Nucleic Acids
객관식
The four nitrogenous bases commonly found if DNA are:
A
Adenine, thymine, cytosine, uracil
B
Uracil, adenine, cytosine, guanine.
C
Uracil, cytosine, guanine, thymine.
D
Adenine, thymine, cytosine, guanine.
E
None are correct.
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