Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 14, Problem 3TY
Checkpoints during the cell cycle are important because they
- allow the organelle activity to catch up to cellular demands.
- ensure the integrity of the cell’s DNA.
- allow the cell to generate sufficient ATP for cellular division.
- are the only time
DNA replication can occur. - do all of the above.
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Students have asked these similar questions
Explain what happens at each phase of cell cycle:
-DNA replication (when, where, how? Use terms such as DNA polymerase, complimentary base pairs)
-Interphase (G1, S, G2)
-Mitosis (overall goal of prophase, metaphase, anaphase, telophase, cytokinesis)
Cell growth and division occurin a regular cycle. This cycle is divided into four phases: G1, S, G2, and
M. The diagram sh ows this cycle, alongwith events that occur in each phase. Follow the prompts
below.
v Color the phase in which most cell growth occurs
BLUE
v Color the phase in which DNA replication occurs RED.
v Color the phase in which preparation for mitosis
G2
occurs in YELLOW.
v Color the phase in which mitosis and cytokinesis
occur in GREEN.
4. Which three phases make upinterphase?
GI
M
5. Which of the following best describes cancer? Circle the
correct answer.
uncontrolled cell growth
cells stop growing
6. If a dog has 72 chromosomes in a SOMATIC cell, how
many chromosomes will its daughter cells have after
meiosis_?
mitosis_?
P.
Describe the cell cycle using the following words:
Interphase
G1
G2
S phase
M phase (mitosis)
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Apoptosis
Check Points feedback
Chapter 14 Solutions
Principles of Biology
Ch. 14.1 - Researchers usually treat cells with drugs that...Ch. 14.1 - Researchers usually treat cells with drugs that...Ch. 14.1 - Refer back to Figure 13.13. How do checkpoint...Ch. 14.1 - A cell that is diploid has two chromosomes. pairs...Ch. 14.1 - In eukaryotes, DNA replication produces sister...Ch. 14.1 - Prob. 3TYKCh. 14.2 - Refer back to the karyotype in Figure 14.1. In...Ch. 14.2 - What are the functions of the three types of...Ch. 14.2 - Prob. 1TYKCh. 14.2 - Prob. 2TYK
Ch. 14.2 - Sister chromatids separate from each other during...Ch. 14.2 - With regard to chromosome composition, how does...Ch. 14.3 - Prob. 1CCCh. 14.3 - Prob. 2CCCh. 14.3 - What is the main reason for meiosis in animals?...Ch. 14.3 - In meiosis I, crossing over occurs during...Ch. 14.3 - Prob. 2TYKCh. 14.3 - Prob. 3TYKCh. 14.4 - Prob. 1CCCh. 14.4 - A chromosome in which the telomere is at one end...Ch. 14.4 - Prob. 2TYKCh. 14.4 - Prob. 3TYKCh. 14 - Prob. 1TYCh. 14 - Prob. 2TYCh. 14 - Checkpoints during the cell cycle are important...Ch. 14 - Prob. 4TYCh. 14 - Prob. 5TYCh. 14 - Prob. 6TYCh. 14 - Prob. 7TYCh. 14 - Prob. 8TYCh. 14 - Prob. 9TYCh. 14 - Prob. 10TYCh. 14 - Distinguish between homologous chromosomes and...Ch. 14 - The Oca2 gene, which influences eye color in...Ch. 14 - PRINCIPLES A principle of biology is that cells...Ch. 14 - Why is it necessary for chromosomes to condense...
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- Chromatin condenses and supercols. Name: The nuclear envelope is broken. Kinetochore microtubules appear. Name: Chromosomes aligned at the cellular equator. Name:arrow_forwardCompare and contrast mitosis and cytokinesis by sorting the choices below. Some choices may apply to both. LIVE Labels Chromosomes are distributed to two daughter nuclei Division of the cytoplasm A duplication division Part of the cell division phase of the cell cycle Reset All Mitosis (1/2) Cytokinesis (2/2)arrow_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_forward
- Checkpoints during cell cycle control are important to ensure: Tumor suppression Cell growth Protein synthesis Genome integrityarrow_forwardWhich of the following statements is correct about the cell cycle? In actively dividing cells, the S and G2 phases are collectively known as interphase. O A. The cell cycle is a sequence of replication and division that produces new cells. O B. When the S phase of the cell cycle is finished, a cell actually has twice as many chromatids as the number of chromosomes in the Gl phase. OC. The phases of the cell cycle are G1, S, and M. OD.arrow_forwardDNA replication takes place. Cytoplasm divides. Chromosomes align at the equator of the cell. Centromeres split; sister chromatids pull apart. Chromosomes condense. Chromatids move to opposite poles. The sequence in which the events numbered above occur in cell division is:arrow_forward
- which of the following would indicate that a cell is in metaphase? Thin, threadlike chromosomes are widely dispersed in the nucleus. Chromosomes appear as dark granules in the nucleus. Centromeres of chromosomes lie on the equator of the cell. Two sets of chromosomes are present on opposite poles of the cell.arrow_forwardThe process of cellular reproduction or divisions is a heavily regulated process for a number of different reasons. In the case of the eukaryotic cell there are a number of different checkpoints that a cell must pass before it can continue on. Please explain what those checkpoints are looking for and where those checkpoints are in the cell cycle. If a cell doesn’t pass any of these checkpoints what happens to those cells?arrow_forwardCell Cycle: Events Name the cell cycle stage in which each event takes place. Each answer choice is used once and only once. Each chromosome is duplicated. S. The cell divides into two daughter Mitosis cells. Cell contents, except for G1 chromosomes, are duplicated. Chromatids are separated from cach Interphase other forming two identical nuclei. The majority of the cell's life, when it is not actively engaged in chromosomal or cellular division. Cytokinesis The cell double-chccks duplicated G2 chromosomes and makes any nceded repairs.arrow_forward
- Describe the mitotic spindle. Include what it is made of, how it forms, and what its role is in cell division.arrow_forwardMatch the phases of the cell cycle.arrow_forwardDescribe the role of cell division in at least one of the following areas of biology: Stem cell research Cell cloning for organ replacement therapies Cancerarrow_forward
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