Essentials of Genetics (9th Edition) - Standalone book
9th Edition
ISBN: 9780134047799
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 5PDQ
Describe kinases and cyclins. How do they interact to cause cells to move through the cell cycle?
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List the functions of kinases and cyclins, and describe how they interact to cause cells to move through the cell cycle.
The cell cycle contains a
series of events that
control the division of
cells. It is controlled by
which of the following:
P. dephosphorylation of
cyclin-dependent kinases
(S)
Q. binding of CDK inhibitor
proteins (R)
R. cyclin synthesis and
degradation (P)
S.
phosphorylation of
cyclin-dependent kinases
(Q)
R and S
P, Q, R, and S
Q and R
P and Q
Describe how cyclins and cyclin-dependent kinases are
related. How do these molecules help regulate the cell
cycle?
Chapter 16 Solutions
Essentials of Genetics (9th Edition) - Standalone book
Ch. 16 -
CASE STUDY | I thought it was safe
A middle-aged...Ch. 16 -
CASE STUDY | I thought it was safe
A middle-aged...Ch. 16 -
CASE STUDY | I thought it was safe
A middle-aged...Ch. 16 - HOW DO WE KNOW? In this chapter, we focused on...Ch. 16 -
2. Review the Chapter Concepts list on page 307....Ch. 16 - What is the relationship between signal...Ch. 16 - Where are the major regulatory points in the cell...Ch. 16 -
5. Describe kinases and cyclins. How do they...Ch. 16 - (a) How does pRB function to keep cells at the G1...Ch. 16 - What is the difference between saying that cancer...
Ch. 16 -
8. What is apoptosis, and under what...Ch. 16 - Define tumor-suppressor genes. Why is a mutation...Ch. 16 - A genetic variant of the retinoblastoma protein,...Ch. 16 -
11. Part of the Ras protein is associated with...Ch. 16 - If a cell suffers damage to its DNA while in S...Ch. 16 - Prob. 13PDQCh. 16 - Prob. 14PDQCh. 16 - Prob. 15PDQCh. 16 - Prob. 16PDQCh. 16 - Prob. 17PDQCh. 16 - How do normal cells protect themselves from...Ch. 16 - Prob. 19PDQCh. 16 - Explain how environmental agents such as chemicals...Ch. 16 - Radiotherapy (treatment with ionizing radiation)...Ch. 16 - Genetic tests that detect mutations in the BRCA1...Ch. 16 - Prob. 23PDQCh. 16 - Prob. 24PDQCh. 16 - Prob. 25PDQCh. 16 - Prob. 26PDQCh. 16 - Prob. 27PDQCh. 16 - Prob. 28PDQ
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- What are cyclins? What is their role in the regulation of the cell cycle?arrow_forwardAt What Phase Is the Cell Cycle Arrested by an Inhibitor?arrow_forwardDescribe how Ras and p53 can alter the simplified genetic pathway controlling cell division shown below. For each of the two genes, would uncontrolled cell division result from a loss-of-function or a gain-of-function mutation? growth factors - receptors - cyclins - cyclin-dependent kinases - cell divisionarrow_forward
- Explain Cyclin-dependent kinases (CDKs) control the cell cycle by phosphorylating other proteins?arrow_forwardExplain how cyclin and cyclin-dependent kinases control the cell cycle.arrow_forwardName the phases of the cell cycle. b) During which phases are the chromosomes and then the cytoplasm split, respectively? c) Describe one mechanism that is used to regulate the cell cycle.arrow_forward
- Discuss two-three ways that kinases/phosphatases OR proteasomes ensures proper rates of cell division. A- G B I U V C M I Ꭶ C X₂ C x² = 州 순arrow_forwardWhich of the following statements best describes the process of phase separation in cells? Proteins can assemble as liquid droplets that are not bounded by a membrane in either the cytoplasm or nucleus A protein can separate into different organelles dependent on the phase of the cell cycle Proteins that are assembled in one phase of the cell cycle and degraded in the next are said to undergo phase separation Signal sequences can target proteins assembled in the cytoplasm into the lumen of the endoplasmic reticulumarrow_forwardWhich of the following is true with respect to cyclins and CDKs? A) CDKs promote progression of the cell cycle, cyclins function to inhibit progression of the cell cycle B) CDKs are the checkpoints in the cell cycle, and when bound to cyclins, they stop progression of the cell cycle C) CDKs will only work to promote progression of the cell cycle when complexed with their designated cyclins D) CDKs are rarely expressed during a cell's cycle, unless cyclins are present to act as transcription factors .arrow_forward
- What are cyclins and cyclin-dependent kinases for? Describe how do these factors affect cell proliferation.arrow_forwardIn the following study, the investigators wanted to determine the role of cyclin B in controlling the cell cycle. Earlier researchers had found that extracts made from frog eggs (Xenopus) contained all the necessary proteins and machinery required for DNA replication. This included proteins that regulated the mitosis promoting factor (MPF). At the time of this study, cyclin B was show to affect MPF activity and the research group wanted to test using Xenopus egg extract in an assay. In Figure 1 (a) MPF activity was tested for its ability to phosphorylate Histone (H1) in sperm chromatin over a certain period of time. Additionally, the cyclin B concentration in the extract was measured. In figure 1b, the extract was tested after treatment with RNase which degraded only the mRNA and not RNA or FRNA in the extract. Knowing that cyclin B is a short-lived protein, why do you suppose the graph shows the results you see in figure 1b?arrow_forwardDescribe the molecules that control the cell cycle through positive and negative regulation.arrow_forward
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