BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 11, Problem 5SA
Summary Introduction
Introduction:
Ever organisms present in the environment contains cell. The cell is the basic “fundamental unit” of life. The cell contains three major regions. These are “plasma membrane, cytoplasm, and nucleus.” The nucleus contains chromosomes. Chromosomes are “thread-like” in appearance. A chromosome has two units: DNA and proteins.
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Students have asked these similar questions
During which phase of mitosis do the microtubules in the spindle shorten?
A.
prophase
B.
metaphase
C.
anaphase
D.
telophase
The metaphase to anaphase transition involves
a. new force being generated to pull the chromatids apart.
b. an increase in force on sister chromatids to pull them apart.
c. completing DNA replication of centromeres allowing chromosomes to be pulled apart.
d. loss of cohesion between sister chromatids.
During which phase of mitosis do the chromatids become chromosomes?
A. Prophase
B. Telophase
C. Cytokinesis
D. Metaphase
Chapter 11 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 11 - Prob. 1SACh. 11 - A duplicated chromosome has ______ chromatids. a....Ch. 11 - Prob. 3SACh. 11 - Most cells spend the majority of their lives in...Ch. 11 - Prob. 5SACh. 11 - Prob. 6SACh. 11 - In intervals of interphase, G stands for ________...Ch. 11 - Prob. 8SACh. 11 - Prob. 9SACh. 11 - Prob. 10SA
Ch. 11 - Cytoplasm of a plant cell divides by the process...Ch. 11 - Prob. 12SACh. 11 - ________ are characteristic of cancer. a....Ch. 11 - Match each term with its best description. ___...Ch. 11 - Match each stage with the events listed. ___...Ch. 11 - When a cell reproduces by mitosis and cytoplasmic...Ch. 11 - How is the human life cycle related to the cell...Ch. 11 - The eukaryotic cell in the photo on the left is in...Ch. 11 - Exposures to radioisotopes or other sources of...Ch. 11 - Suppose you have a way to measure the amount of...
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- Prophase is the stage of mitosis characterized by the a. physical seperation of sister chromatids b. appearance of visible chromosomes c. occurrence of cytokinesis d. alignment of chromosomes at center of cellarrow_forwardthe period between mitoses, divided into G1, S, and G2 is a) M phase b) interphase c) C phase d) A phasearrow_forwardWhat happens to microtubules in the presence of very high levels of GTP? A. They will undergo treadmilling B. They will grow rapidly C. They become unstable and may undergo catastrophy D. They will shrinkarrow_forward
- Kinetochores are the a) sites of spindle fiber attachment to chromosomes. b) regions where two chromosomes remain attached during mitosis. c) same as centromeres. d) structures that give support to the nuclear membranearrow_forwardDuring this stage of mitosis, the chromatin coils to form chromosomes, the nuclear envelope disappears, the nucleolus dissolves, spindle fibers are formed, and the centrioles migrate to the poles. a. prophase b. metaphase c. anaphase d. telophasearrow_forwardMitosis results in each cell: A. receiving exact copies of all chromosomes of original cell B. donating repaired chromosomes to the original cell C. receiving exactly half of the chromosomes of original cell D. doubling the number of chromosomesarrow_forward
- Which of the following is not true regarding cytokinesis?* A.Simultaneously happen with the telophase. B.It is the division of cytoplasm. C.The same with the interkinesis. D.Leads to the formation of cleavage furrow.arrow_forwardDuring cytokinesis, a contractile ring of actin microfilament forms the ______________ and pinches the cell apart. A. Kinetochores B. Cleavage furrow C. Equator D. Astersarrow_forwardWhich of the following does NOT occurr during mitosis? a. condensation of the chromosomes b. separation of sister chromotids c. replication of DNA d. spindle formationarrow_forward
- There are certain cells that are multinucleated (having more than one nucleus). Which of the following is a possible explanation for this occurrence? A) The cell underwent repeated cytokinesis but no mitosis. B) The cell underwent repeated mitosis with simultaneous cytokinesis. C) The cell underwent repeated mitosis, but cytokinesis did not occur. D) The cell had multiple S phases before it entered mitosis.arrow_forwardThe spindle apparatus is formed during the __________ phase of mitosis A. Anaphase B. Metaphase C. Prophase D. Telophasearrow_forwardIn mitosis, when the duplicated chromosomes line up in the center of the cell, that stage is calleda. prophase. c. anaphase.b. metaphase. d. telophase.arrow_forward
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