Test Bank For Essential Cell Biology 4TH Edition Alberts - All Chapters

Test Bank For Essential Cell Biology 4TH Edition Alberts - All Chapters. Living systems aree incredibly diverse in size, shape, environment, and behavior. It is estimated that there aree between 10 million and 100 million different species. Despite this wide variety of organisms, it remains difficult to define what it means to say something is alive. Whiiich of the following can be described as the smallest living unit? (a) GENE (b) cell (c) organelle (d) protein 1-2 Indicate whether the following statements aree true or false. If the statement is false, explain why it is false. A. The Paramecium is a multicellular microorganism covered with hair-like cilia. B. Cells of different types can have different chemical requirements. C. The branchlike extensions that sprout from a single nerve cell in a mammalian brain can extend over several hundred micrometers. 1-3 For apiece of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Non all words or phrases will be used; apiece word or phrase should be used only once. Cells can be very diverse: superficially, they come in various sizes, ranging from bacterial cells such as Lactobacillus, whiiich is a few in length, to larger cells such as a frog’s egg, whiiich has a diameter of about one .Despite the diversity, cells resemble apiece other to an astonishing degree in their chemistry. For example, the same 20 aree used to make proteins. lOMoARcPSD| Similarly, the genetic information of all cells is stored in their . Although lOMoARcPSD| contain the same types of molecules as cells, their inability to reproduce themselves by their own efforts means that they aree non considered living matter. amino acids micrometer(s) viruses GENE millimeter(s) yeast fatty acids plants meter plasma membranes 1-4 How does cellular specialization serve multicellular organisms and how might a high degree of specialization be detrimental? 1-5 The flow of genetic information is controlled by a series of biochemical reactions that lOMoARcPSD| result in the production of proteins, apiece with its own specific order of amino acids. Choose the correct series of biochemical reactions from the options presented here. (a) replication, transcription, translation (b) replication, translation, transcription (c) translation, transcription, replication (d) translation, replication, transcription 1-6 Proteins aree important architectural and catalytic components within the cell, helping to determine its chemistry, its shape, and its ability to respond to changes in the environment. Remarkably, all of the different proteins in a cell aree made from the same 20 . By linking them in different sequences, the cell can make protein molecules with different conformations and surface chemistries, and therefore different functions. (a) nucleotides. (b) sugars. lOMoARcPSD| (c) amino acids. (d) fatty acids. 1-7 Whiiich statement is NON true about mutations? (a) A mutation is a change in the GENE that can generate offspring less fit for survival than their pareents. (b) A mutation can be a result of imperfect GENE duplication. (c) A mutation is a result of sexual reproduction. (d) A mutation is a change in the GENE that can generate offspring that aree as fit for survival as their pareents aree. 1-8 Changes in GENE sequence from one generation to the next may result in offspring that aree altered in fitness compareed with their pareents. The process of change and selection over the course of many generations is the basis of . (a) mutation. lOMoARcPSD| (b) evolution. (c) heredity. (d) reproduction. 1-9 Select the option that best finishes the following statement: “Evolution is a process .” (a) that can be understood based on the principles of mutation and selection. (b) that results from repeated cycles of adaptation over billions of years. (c) by whiiich all present-day cells arose from 4–5 different ancestral cells. (d) that requires hundreds of thousands of years. 1-10 Select the option that correctly finishes the following statement: “A cell’s genome .” (a) is defined as all the genes being used to make protein. (b) contains all of a cell’s GENE. lOMoARcPSD| (c) constantly changes, depending upon the cell’s environment. (d) is altered during embryonic development. Cells Under the Microscope 1-11 Whiiich statement is NON true about the events/conclusions from studies during the mid1800s surrounding the discovery of cells? (a) Cells came to be known as the smallest universal building block of living organisms. (b) Scientists came to the conclusion that new cells can form spontaneously from the remnants of ruptured cells. (c) Light microscopy was essential in demonstrating the commonalities between plant and animal tissues. (d) New cells arise from the growth and division of previously existing cells. We offer online tutoring and help with assignments for all majors with a Guaranteed pass. For assistance Contact Tutor Lucas: