EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 11.5, Problem 1BC
Summary Introduction
To explain: The reason that it is necessary for the chromosomes to become highly compacted in preparation for cell division.
Introduction: Cell is the “basic unit” of life. Every organism is composed of a cell. Cell division is an important function performed by every cell to increase its populations and to survive. The process in which a single cell splits into two progeny cells is termed as cell division. Different organisms have a different mechanism for cell division such as binary fission, budding, mitosis, meiosis and so on.
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1. Rarely, both sister chromatids of a replicated chromosome end up in one daughter cell. How might this happen? What could be the consequences of such a mitotic error?
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What molecular mechanisms operate to ensure that once the decision to advance through the restriction point has been made, this leads to an essentially irreversible commitment to complete the remaining phases of the cell cycle through M phase?
Chapter 11 Solutions
EBK BIOLOGY
Ch. 11.1 - Prob. 1BCCh. 11.1 - Prob. 1EQCh. 11.1 - Prob. 2EQCh. 11.1 - CoreSKILL In the experiment of Avery, MacLeod,...Ch. 11.2 - Prob. 1CCCh. 11.2 - Prob. 2CCCh. 11.2 - Prob. 3CCCh. 11.2 - Prob. 4CCCh. 11.3 - If this experiment was conducted for four rounds...Ch. 11.4 - Molecular Mechanism of DNA Replication Concept...
Ch. 11.4 - Prob. 2CCCh. 11.4 - Prob. 3CCCh. 11.4 - Prob. 4CCCh. 11.5 - Prob. 1CCCh. 11.5 - Prob. 2CCCh. 11.5 - Prob. 1BCCh. 11 - Why did researchers initially believe that the...Ch. 11 - Prob. 2TYCh. 11 - Which of the following equations is accurate...Ch. 11 - Prob. 4TYCh. 11 - Which of the following statements about the...Ch. 11 - Meselson and Stahl were able to demonstrate...Ch. 11 - During replication of a DNA molecule, the daughter...Ch. 11 - Prob. 8TYCh. 11 - A nucleosome is a. a dark-staining body composed...Ch. 11 - The conversion of euchromatin into heterochromatin...Ch. 11 - What are the four key criteria that the genetic...Ch. 11 - A double-stranded DNA molecule contains 560...Ch. 11 - Prob. 3CQCh. 11 - Prob. 1COQCh. 11 - CoreSKILL How might you provide evidence that DNA...
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- Classifiation of Llfe A new organism was discovered in a deep sea vent at the bottom of the ocean. The researchers collected the sample and made careful observations of it. The picture at right shows a microscopic image captured at 1000X its actual size. Below are some other observations made: • When DNA was isolated from the cell, it was mixed with an equal portion of histone proteins • There are no visible organelles present inside the cell • The specimen seem to die in the presence of oxygen • Able to live in conditions that mimic deep sea vents without any external food source provided Based on these observations, determine each of the following and provide a clear rationale. A) To which domain would you assign this organism? Why? B) Propose a hypothesis of how they obtain nutrients. Are these most likely autotrophs or heterotrophs? Provide a rationale.arrow_forwardplease help with q 2arrow_forwardPlease help a. How many chromosomes and/or sister chromatids do Figure A and B show? b. What is the name of the process that took place to get from structure A to structure B?arrow_forward
- Learning Task 2: Make a model of a DNA template to determine the sequence of bases in th new DNA strands. Then, answer the guide questions that follow. Materials: crayons. Scissors, paste/tape, used folder or illustration board Procedure: Use the pattern of the DNA template: (attached to this LP). Color code, phosphate - blue, deoxyribose sugar = green, nitrogenous base as follows: adenine= yellow, thymine pink, guanine = violet, cytosine = red. And cut the shapes of each nucleotides. Build a model of a strand of a DNA molecule. The strand should contain 6 base" rungs" following the given order of the nucleotides: Guanine, Adenine, Cytosine, Thymine, Cytosine, Guanine. %3D %3D Tape the cutout pattern to form the nucieotides. This will represent the left half of DNA. Make a complementary strand that you made in step 3. Tape the cut -out pattern again forming the nucieotides for the second strand of the DNA molecules. Match the bases of the first strand and the second strand. Do not tape…arrow_forwardplease help?arrow_forward2) Main component of the cell walls in plants: in fungi: bacteria: 3) What are the double-membrane bounded organelles in a cell? 4) A is the whole genetic material of an organism. Which organelles in cell have their own DNA? and Human Genome Project were created with in 1992, and completed in chromosomes and chromosomes beginning (year). 5) After the invention of by structure of biological cells has better understood. Firstly, he made observations on is used for the first time in his work. cells which were dead. The word 6) chromosome abnormalities (Trisomy21) is an example of human chromosomal disorder. Types of are 7) Order phases of cell cycle putting numbers in blue circles. is the longest phase in cell division. cells make up most of your body's tissues and organs, including skin, muscles, lungs, gut, and hair cells divide by 8) A- For each number, write their names on the right. B- Label the figure below similarly (fill in boxes). BBIX 1- 2- 3- 1 3 4 4-arrow_forward
- Hi, please help with question 1arrow_forwardHow to write the methodology? I have a practical of HOMOGENIZATION AND FREEZE-DRYING, I need to do a lab report, but I don't know how to write the methodology. Here is the introduction: HomogenizationHomogenization is a process that involves breaking apart cells to release theircytoplasm and its contents. When the purpose is to extract organelles, it is frequentlydone in two steps; first, using a blender to break the tissue up, and then with anultrasonic or mechanical tissue disruptor. The organelles are then generally separatedusing differential centrifugation.Freeze-dryingFreeze-drying also known as lyophilization, and it is a dehydration process typicallyused to preserve perishable material or make the material more convenient fortransport. It works by freezing the material and then reducing the surrounding pressureto allow the frozen water in the material to sublimate directly from the solid phase tothe gas phase.arrow_forwardDo Q1 Applying concepts both part a as well as barrow_forward
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