The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time. Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

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Chapter 18, Problem 12Q

Summary Introduction

To explain: The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

Summary Introduction

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

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A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation? The cell membranes are more resistant than normal. An isotonic solution had been added instead of water. A solution of 0.1 M NaCl had been added instead of water. Not enough water had been added to the red blood cell pellet. The man had sickle-cell anaemia.

With reference to their absorption spectra of the oxy haemoglobin intact line) and deoxyhemoglobin (broken line) shown in Figure 2 below, how would you best explain the reason why there are differences in the major peaks of the spectra? Figure 2. SPECTRA OF OXYGENATED AND DEOXYGENATED HAEMOGLOBIN OBTAINED WITH THE RECORDING SPECTROPHOTOMETER 1.4 Abs < 0.8 06 0.4 400 420 440 460 480 500 520 540 560 580 600 nm 1. The difference in the spectra is due to a pH change in the deoxy-haemoglobin due to uptake of CO2- 2. There is more oxygen-carrying plasma in the oxy-haemoglobin sample. 3. The change in Mr due to oxygen binding causes the oxy haemoglobin to have a higher absorbance peak. 4. Oxy-haemoglobin is contaminated by carbaminohemoglobin, and therefore has a higher absorbance peak 5. Oxy-haemoglobin absorbs more light of blue wavelengths and less of red wavelengths than deoxy-haemoglobin

Answer 2

Question

Chapter 18, Problem 12Q

Summary Introduction

To explain: The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

Summary Introduction

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

Expert Solution & Answer

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Answer 3

Question

Chapter 18, Problem 12Q

Summary Introduction

To explain: The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

Summary Introduction

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

Expert Solution & Answer

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Answer 4

Question

Chapter 18, Problem 12Q

Summary Introduction

To explain: The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

Summary Introduction

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

Expert Solution & Answer

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Answer 5

Chapter 18, Problem 12Q

Summary Introduction

To explain: The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

Summary Introduction

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

Answer 6

Chapter 18, Problem 12Q

Summary Introduction

To explain: The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

Answer 7

Chapter 18, Problem 12Q

Summary Introduction

To explain: The reason that cleavage divisions take place without significant increase in the weight of the embryo as a result of short cell cycles that are shorter than those of bacterial fission time.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism. Cleavage is a process of repeated mitotic divisions where the enormous amount of cytoplasm is distributed to form several small cells. Here, the weight of the embryo does not change.

Answer 8

Summary Introduction

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

Answer 9

Summary Introduction

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 18 - Prob. 1Q Ch. 18 - Prob. 2Q Ch. 18 - Prob. 3Q Ch. 18 - Prob. 4Q Ch. 18 - Prob. 5Q Ch. 18 - Prob. 6Q Ch. 18 - Prob. 7Q Ch. 18 - Prob. 8Q Ch. 18 - Prob. 9Q Ch. 18 - Prob. 10Q

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To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

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Chapter 18 Solutions

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To explain: The phase of the cell cycle that will be reduced during cleavage. Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.

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Chapter 18 Solutions

To explain: The phase of the cell cycle that will be reduced during cleavage.

Introduction: The male and female gametes unite to form the zygote. The zygote then undergoes series of cell divisions called cleavage to develop into a multicellular organism.