Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 4.5, Problem 1CC
Summary Introduction
To determine: The importance of highly invaginated inner membrane of the mitochondria.
Introduction: A eukaryotic cell consists of many cell organelles enclosed within a plasma membrane. Mitochondria and chloroplast are considered as semi-autonomous organelles because both possess the ability to grow and divide due to the presence of their own DNA. However, they are semi-autonomous as they depend on other parts of the cell, such as cytosol to import their internal components.
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A couple undergoes a workup for infertility, which shows that the man has a low sperm count. The couple asks why this is a problem because "it only takes one sperm to fertilize an egg." How could you explain their problem?
O The flagella of many sperm must beat against the zona pellucida of the oocyte to destroy it before a single sperm can penetrate.
O Many sperm must enter the egg before one is chosen to complete fertilization.
O The corona radiata that surrounds the oocyte contains many macrophages that kill most of the sperm that reach the egg.
O Although a single sperm fertilizes the egg, many others prepare the egg for its entry
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Steroids, a type of lipid, include the sex hormones that are synthesized and stored in the testes and ovaries. The testes and ovaries, therefore, are rich in what organelle? *
O Rough ER
O smooth ER
O Mitochondria
O Ribosomes
The cell cycle is regulated by
O Internal signals
External signals
Internal and external signals
O Apoptosis
Chapter 4 Solutions
Biology
Ch. 4.1 - Prob. 1CCCh. 4.1 - Prob. 2CCCh. 4.2 - Prob. 1BCCh. 4.2 - Prob. 1CCCh. 4.2 - Prob. 2BCCh. 4.3 - Prob. 1BCCh. 4.3 - Prob. 1CCCh. 4.3 - Prob. 2BCCh. 4.4 - Prob. 1CCCh. 4.4 - Prob. 1BC
Ch. 4.4 - Prob. 2CCCh. 4.4 - The Nucleus and Endomembrane System Experimental...Ch. 4.4 - Prob. 2EQCh. 4.4 - Prob. 3EQCh. 4.4 - Prob. 3CCCh. 4.5 - Prob. 1CCCh. 4.5 - Core Skill: Connections Look ahead to Figure...Ch. 4.5 - Prob. 2CCCh. 4.6 - Prob. 1CCCh. 4.6 - Prob. 2CCCh. 4 - The cell theory states that a. all living things...Ch. 4 - Prob. 2TYCh. 4 - Prob. 3TYCh. 4 - Prob. 4TYCh. 4 - Each of the following is part of the endomembrane...Ch. 4 - Prob. 6TYCh. 4 - Functions of the smooth endoplasmic reticulum...Ch. 4 - Prob. 8TYCh. 4 - Prob. 9TYCh. 4 - Which of the following observations would not be...Ch. 4 - Prob. 1CQCh. 4 - Explain how motor proteins and cytoskeletal...Ch. 4 - Prob. 3CQCh. 4 - Discuss the roles of the genome and proteome in...Ch. 4 - Prob. 2COQ
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- Some sperm mitochondria enter an egg during fertilization, but as sperm nature these mitochondria are tagged with a protein (ubiquitin) that marks them for destruction. What organelle carries out this destruction process?arrow_forward9.arrow_forwardWhat is the special characteristic of mitochondria that makes it different from other organelles? Why is it called “power house” of cell?with daigrmsarrow_forward
- A couple is told by their doctor that they cannot have children because the sperm of the male lack motility. Which cellular structures are likely to be dysfunctional? Microtubules O All are correct O Microfilaments Intermediate filamentsarrow_forwardExplain and identify the testis and ovaries have considerable levels of smooth endoplasmic reticulum in specific cells.arrow_forwardwhy do plants cell have bigger vacuoles than animal cell?arrow_forward
- What occurs during the stage of mitosis that is shown in the diagram above Select all that apply OSster chromatids are separated by the spinde fibers OOvomosomes de-condense OCentrioles move to opposite poles OSpinde fbers disappear OChromosomes condere ONuclear emvelope reforms O Nuclear emvelope disappearsarrow_forwardMitosis occurs daily in a human being. What type of cells do humans need to produce in large quantities on a daily basis?arrow_forwardThe stage of mitosis when sister chromatids separate from each other and migrate to opposite poles of a cell is called O telophase anaphase metaphase prophase O interphasearrow_forward
- What is the special characteristic of mitochondria that makes it different from other orgnelles. Why is it called power house of the cell?arrow_forwardSperm need significant amounts of ATP to fuel their travel through the reproductive tract. This ATP is generated via oxidative metabolism of the glucose and fructose contained in the seminal fluid. These sugars are large polar molecules that enter sperm cells via glucose transporters or GLUTS. One such GLUT protein is depicted in the image below. When GLUTS recognize and bind glucose, they undergo a conformational change releasing glucose on the other side of the membrane. Due to the persistent high energy demands of the sperm cell, these sugars are continually being catabolized (broken down). GLUTs mediate what type of transport of glucose and fructose across the membrane? ________________ Is this an active or passive process? _________________ What type of transport protein are the GLUTs described in this question? ___________________ How many transmembrane domains does this GLUT have? _______________arrow_forwardThis organelle takes glucose and turns it in to energy (ATP) O ribosomes O mitochondria O cell wall O ysosomesarrow_forward
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