1. Reproduction Unit Review Questions

2. When two gametes come together through external or internal fertilization, it is known as _______ _________?

3. Sexual Reproduction

4. What base pairs with Guanine?

5. Cytosine

6. How many daughter cells are made in Mitosis?

7. 2

8. Name at least 2 advantages of sexual reproduction.

9. Genetic Variation Selective Breeding Parents care for their young, so offspring has a higher survival rate.

10. What makes up a nucleotide?

11. A sugar, a phosphate and a nitrogenous base

12. What type of cell is produced in meiosis?

13. Sexual Reproduction Cells OR Gametes Or Egg and Sperm Cells

14. What enzyme is responsible for splitting the DNA double-Helix during replication?

15. Helicase

16. Based on the text below, what type of reproduction does this organism use and how do you know?
Amoebas are found all over the place, from oceans to soil. One common amoeba is the giant amoeba, Amoeba proteus. Giant amoebas reproduce by binary fission, a fancy word that means splitting in two. When a giant amoeba begins to divide, it forms a kind of ball and then copies its nucleus. Finally, the two new cells pinch apart, and slink away from each other. In this way, two identical “daughter” cells are created from one. When conditions are right, this amoeba can divide every 48 hours.

17. Asexual because it mentions binary fission.

18. Name at least 2 advantages of asexual reproduction.

19. 1. No waste of time and energy to find a mate 2
1. No waste of time and energy to find a mate 2. Large number of offspring at a rapid rate 3. Born being able to reproduce, so no development stage

20. Name at least 2 disadvantages of sexual reproduction.

21. 1. Waste of time and Energy to search for a mate. 2
1. Waste of time and Energy to search for a mate. 2. No fertilization during gestation period, which means smaller numbers of offspring. 3. Not born with the ability to reproduce; they must grow and develop first.

22. What enzyme is responsible for matching the bases together correctly during DNA replication?

23. Polymerase

24. How many daughter cells are made in Meiosis?

25. 4

26. What makes up a nucleoside?

27. A pentagonal sugar and a nitrogenous base.

28. What type of cells are produced in Mitosis, and what is their purpose?

29. Body Cells, for growth, development and repair

30. Define asexual Reproduction

31. A type of reproduction where 100 % of the DNA is copied from one parent to the offspring, making it identical.

32. Based on the text below, what type of reproduction does this organism use and how do you know?
Though grizzlies spend most of their days wandering around alone, they come together to mate during early summer. During mating, the male deposits his sperm into the female, where her eggs are fertilized. Females delay implantation of the fertilized eggs, so the embryos don’t begin developing until the females are nestled into their warm dens in November.

33. Sexual reproduction because it involves two parents and it mentions fertilization.

34. Correctly match the bases below with their correct pairs.
A C T G

35. T G A C

36. Name at least 1 disadvantage of asexual reproduction

37. No genetic variation No parents to care for their young Dangerous DNA mutations

38. Give an example of 1 type of asexual reproduction.

39. Regeneration Fission Budding

40. How many chromosomes are in a meiosis daughter cell?

41. 23

42. Based on the text below, what type of reproduction does this organism use and how do you know?
O. savignyi actually splits in half in order to reproduce. When fission happens, the brittle star breaks down the middle of its disk, creating two identical 3-armed brittle stars. These stars then grow new arms from their empty arm-spaces. At certain times of the year, large females and males release sperm and eggs into the ocean. When the sperm and eggs meet they produce larvae that float away to new habitats.

43. Both because it mentions fission and fertilization.

44. Name the four bases used in DNA replication

45. Adenine, thymine, cytosine, and guanine

46. Give an example of 1 type of asexual reproduction and explain it.

47. Regeneration Fission Budding

48. Give an example of another type of asexual reproduction and explain it.

49. Regeneration Fission Budding

50. How many chromosomes are in a daughter cell of mitosis?

51. 46

52. What base pairs with Adenine?

53. Thymine