Campbell Biology: Concepts & Connections, 9e, Access Code
9th Edition
ISBN: 9780134536262
Author: Taylor
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 8TYK
A biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in a cell doubled
a. between prophase and anaphase of mitosis.
b. between the G1 and G2 phases of the cell cycle.
c. during the M phase of the cell cycle.
d. between prophase I and prophase II of meiosis.
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Students have asked these similar questions
a) In which stage of mitosis do chromosomes condense?
(b) If a eukaryotic organism has a total of 34 chromosomes, how many pairs will the chromosomes be arranged in?
(c) Define homologous chromosomes.
The drug colchicine prevents the spindles microtubules from forming or growing. What would happen in mitosis to a cell that was given colchicine throughout mitosis?
A. The chromosomes would not condense
B. The nuclear envelope would not dissolve
C. The chromosomes would not line up for metaphase
D. The chromosomes would line up for metaphase but would not pull apart in anaphase.
In the mitosis experiment, in what stage were most of the onion root tip cells in? Based on what you know about cell cycle division, what does this imply about the life span of a cell? Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell cycle?
Chapter 8 Solutions
Campbell Biology: Concepts & Connections, 9e, Access Code
Ch. 8 - Complete the following table to compare mitosis...Ch. 8 - If an intestinal cell in a grasshopper contains 24...Ch. 8 - Which of the following is not a function of...Ch. 8 - It is difficult to observe individual chromosomes...Ch. 8 - A fruit fly somatic cell contains 8 chromosomes....Ch. 8 - If a fragment of a chromosome breaks off and then...Ch. 8 - Which of the following phases of mitosis is...Ch. 8 - A biochemist measured the amount of DNA in cells...Ch. 8 - A micrograph of a dividing cell from a mouse...Ch. 8 - Cytochalasin B is a chemical that disrupts...
Ch. 8 - Why are individuals with an extra chromosome 21,...Ch. 8 - In the light micrograph below of dividing cells...Ch. 8 - An organism called a plasmodial slime mold is one...Ch. 8 - Prob. 14TYKCh. 8 - Discuss the factors that control the division of...Ch. 8 - Compare cytokinesis in plant and animal cells. In...Ch. 8 - Sketch a cell with three pairs of chromosomes...Ch. 8 - Suppose you read in the newspaper that a genetic...Ch. 8 - Bacteria are able to divide on a faster schedule...Ch. 8 - Prob. 20TYKCh. 8 - A mule is the offspring of a horse and a donkey. A...Ch. 8 - What you think of as a banana is a Cavendish, one...Ch. 8 - SCIENTIFIC THINKING The study described in Module...
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- The individual chromosomes become visible with a light microscope during which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forwardWhat is the purpose of mitosis? a It ensures that new nuclei have an exact copy of DNA. b It ensures the reproduction of mitochondria and chloroplasts. c It guarantees that each daughter cell has half the amount of DNA of parent cells. d It prevents the occurrence of cancer cells.arrow_forwardWhat is the role of cohesin proteins in cell division? a. They organize the DNA of the chromosomes into highly condensed structures. b. They hold the DNA of the sister chromatids together. c. They help the cell divide into two daughter cells. d. They connect microtubules and chromosomes.arrow_forward
- When does chromosomal nuclear DNA, which is found inside the nucleus of a eukaryotic cell, replicate? A. All types of eukaryotic cell in a human organism replicates throughout their life span. B. It only replicates during the S phase (synthesis phase) of the cell cycle. C. The chromosomal DNA only replicates once throughout their lifetime. D. It replicates during the G1 and G2 phases of the M(mitosis) phase of Meiosis.arrow_forwardWhat is the fundamental difference between mitosis and meiosis? A. DNA is replicated twice in meiosis, but only once in mitosis. B. The number of DNA molecules per cell nucleus is cut in half in meiosis but remains constant in mitosis. C. The number of chromosomes doubles in meiosis, whereas it stays the same in mitosis. D. Mitosis involves two cell divisions, whereas meiosis only involves one.arrow_forwardWhich of the following is the main reason why DNA must exist in chromosome form? a.)To favor the formation of sister chromatids b.)To allow the protein histones to carry out its task c.)To avoid the genetic material to be tangled away during cell division d.)To promote the formation of spindle fibersarrow_forward
- Which of the following is not a reason for mitosis? A. Keep cells small B. Replace damaged cells C. Produce new genes and traits D. Growth of organismsarrow_forwardWhat is the function of the kinetochore during mitosis?a. It promotes the attachment of monads to each other toform a dyad.b. It is a location where a kinetochore microtubule can attachto a chromosome.c. It promotes the condensation of chromosomes duringprophase.d. Both a and b are correct.arrow_forwardYou add a chemical to five samples of cells and have another five samples of cells to which you do not add the chemical. You wait 10 minutes and then stain all ten samples of cells and observe if they have entered mitosis or not? What is the independent variable? Group of answer choices A) If the cells entered mitosis or not B) The staining of the cells C) The 10 minute wait after staining D)If the chemical was added or notarrow_forward
- You add a chemical to five samples of cells and have another five samples of cells to which you do not add the chemical. You wait 10 minutes and then stain all ten samples of cells and observe if they have entered mitosis or not? What is the dependent variable? Group of answer choices A) If the cells entered mitosis or not B) The number of samples of the cells C) The length of time before stainingg D) If the cells are treated with the chemical or notarrow_forwardWhen does DNA replication occur during meiosis? a. during telophase b. during prophase I c. during anaphase and telophase d. during interphase before meiosis I beginsarrow_forwardThe chromosomes become visible under a light microscope during which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forward
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cell division of meiosis and mitosis; Author: Stated Clearly;https://www.youtube.com/watch?v=A-mFPZLLbHI;License: Standard youtube license