BIOL 121 Chapter Notes - Chapter 11.1: Chromatid, Meiosis, Centromere
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Question 3 (5 points)
Match the terms to the definitions provided.
Question 3 options:
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Question 4 (7 points)
Match the terms to the definitions provided.
Question 4 options:
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Question 5 (6 points)
Put the events of a MAP kinase cascade in the correct order.
Question 5 options:
MAPKKK phosphorylates and activates another kinase | |
MAPKK phosphorylates and activates MAPK | |
Binding of MAPKKK to Ras | |
External signal binds to membrane receptor and activates receptor kinase. | |
MAPK phosphorylates an inactive response protein and activates it. | |
Phosphorylation of receptor kinase and interaction with RAS |
6.A) If one follows 120 primary oocytes in an animal through their various stages of oogenesis, how many secondary oocytes would be formed?
B) How many first polar bodies would be formed?
C) How many ootids would be formed?
D) If one follows 120 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would be formed?
E) How many spermatids would be formed?
14. From which phase of the cell cycle does a cell enter G0 phase
21. Which of the following is true about the second meiotic division?
-The products are four identical gametes.
-Homologous chromosomes are pulling apart.
-Nondisjunction would lead to extra bivalents forming.
-Synapsis occurring in the second meiotic division.
-Sister chromatids are pulling apart.
23.Which if the following is true?
-Cells are 4n after S phase. |
-Sister chromatids in mitosis are not identical. |
-Cells are considered to be 2n after meiosis I. |
-A chromosome always contains the same number of chromatids, regardless of phase of the mitotic or meiotic cell cycle. |
-A chromosome may contain one or two chromatids in different phases of the mitotic or meiotic cell cycle. |