Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 1.6PS
The “Facts” of Life. Each of these statements was once regarded as a biological fact but is now understood to be untrue. In each case, indicate why the statement was once thought to be true and why it is no longer considered a fact.
(a) Plant and animal tissues are constructed quite differently because animal tissues do not have conspicuous boundaries that divide them into cells.
(b) Living organisms are not governed by the laws of chemistry and physics, as is nonliving matter, but are subject to different laws that are responsible for the formation of organic compounds.
(c) Genes most likely consist of proteins because the only other likely candidate, DNA, is a relatively uninteresting molecule consisting of only four kinds of monomers (
(d) The fermentation of sugar to alcohol can take place only if living yeast cells are present.
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Students have asked these similar questions
Please answer.
For each of the following scenarios please describe which part of the cell theory is supported by this
evidence.
Options:
•
•
•
Cells come from preexisting cells,
cells are the basic unit of life,
all living things are made of cells
1. A botanist (plant scientists) named Schlieden studied a large variety of plant cells under the
microscope and found that all plants were made of cells.
Option 1
2. A scientist named Leeuwenhoek found that after studying a wide variety of organisms the
smallest living organism he observed was made of only one cell.
Option 1
3. A scientist named Virchow viewed cells under a microscope and found that cells would grow
and split into new cells.
Option 1
4. A zoologist (animal scientist) looked at a large amount of different animal tissues under a
microscope and found that all animals are made of cells.
Option 1
5. Robert Hooke studied cork and many other substances and found that they contained little
square boxes he called cells.
Option 1
What I Can Do
Cells are highly organized structures with parts that perform specific functions.
Starting from the cell membrane with its incomparable abilities not only to provide
shape and flexibility to the cell but also to determine the nature of its interaction with
its environment. For you to recognize these functions, make an illustration (with a title)
that shows a place which resembles a cell membrane. Also, write the things that you
think they are similar. Your product will be assessed based on the following criteria:
organization and content accuracy, appropriateness of elements, creativity, and
appearance. The actual rubric to be used in assessing your product will be found on
page 21.
Assessment
Let's see how well you have enjoyed the amazing world of çell cycle and mitosis by
Chapter 1 Solutions
Becker's World of the Cell (9th Edition)
Ch. 1 - What evidence led scientists to develop the basic...Ch. 1 - Why is a high degree of antibody-antigen...Ch. 1 - You have discovered a defective gene that allows...Ch. 1 - Prob. 1.3CCCh. 1 - The Historical Strands of Cell Biology. For each...Ch. 1 - QUANTITATIVE Cell Sizes. To appreciate the...Ch. 1 - QUANTITATIVE Sizing Things Up. To appreciate the...Ch. 1 - Problem Set QUANTITATIVE Limits of Resolution Then...Ch. 1 - The Contemporary Strands of Cell Biology. For each...Ch. 1 - The Facts of Life. Each of these statements was...
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- QIV. Determine if the level of organization is molecular or cellular. Tick True if molecular. Tick False if cellular. Prokaryotic cells have no membrane-bound nucleus, and the organelles have no surrounding membranes. Select one: O True O Falsearrow_forwardTRUE or FALSE: Eukaryotic cells feature membrane bound organelles that create specialized compartments within a single cell. The primary structure of the outer cell membrane is a double layer but the membranes that enclose organelles are only single layer. Choose. 1. Which of the following is one of the ways that will keep the membranes of such vegetables to remain fluid when it is extremely cold? A) by increasing the percentage of unsaturated phospholipids in the membrane B) by decreasing the number of hydrophobic proteins in the membrane C) by increasing the percentage of cholesterol molecules in the membrane D) by co-transport of glucose and hydrogen 2. After a membrane freezes and then defrost, it often turns out to be loose to solutes. The best logical reason for this is that: A) the lipid bilayer loses its fluidity when it freezes. B) transport proteins become nonfunctional during freezing C) the integrity of the lipid bilayer is broken when the membrane freezes D) the…arrow_forwardProteins Proteins are abundant in living systems. They are involved in almost all aspects of a cell's ability to maintain homeostasis. Different types of proteins include enzymes, transport proteins, hormones, structural proteins, defense proteins, storage proteins, and contractile proteins. Due to the differences in their structure, proteins perform various functions including carrying substances throughout the body, constructing new structures, aiding in digestion, and coordinating the activities of the body. All cells build diverse proteins using the same building blocks of amino acids. There are 20 different amino acids that can be combined to make a protein. Structural similarities within amino acids allow for protein synthesis to be a regulated process, while differences within amino acids allow for interactions that create unique protein structures. An amino acid attaches to another amino acid by a peptide bond, forming a peptide. Polypeptides are formed when many amino acids…arrow_forward
- Nonearrow_forwardTAGS: Biology, Chemistry, Biochemistry, Cell Biology, Molecular Biology A group of researchers were tasked to design various synthetic cell membranes that could be used to simulatecellular activities of different organisms. Help the researchers assemble the structure of the major lipid component for a cell membrane (draw the strucutres clearly) that is appropriate for the following and briefly explain your answer: a prokaryotic cell thriving in a geyser at the Yellowstone National Park in Wyoming, USA a muscle cell of a salmon fry in the Arctic Ocean a frog neurocyte Chemical structures of the compounds that are available are shown on the image.arrow_forwardThe plasma membrane isa. a carbohydrate layer that surrounds groups of cells to protect them.b. a double lipid layer with proteins inserted in it, which surrounds every cell individually.c. a thin sheet of structural proteins that encloses cytoplasm.d. composed of proteins that form a protective barrier.arrow_forward
- This is not graded.arrow_forwardTRUE OR FALSE. 1. Eukaryotic cells have membrane-bound organelles and true nucleus whereas prokaryotic cells have no nucleus and organelles. 2. Microfilaments, microtubules, and intermediate filaments keep the whole cell and its organelles intact. 3. Ribosomes, the main organelle involved in protein synthesis are composed of sub units that are produced by the golgi body.arrow_forwardSubject: Environmental Science Think about your favorite kind of pizza. How is your body provided with each of the four major biological molecules when you eat this pizza? Why is it important that your food contains these biological molecules?arrow_forward
- True or False: 14- Golgi apparatus present in all the cells. 15- The lysosomes are formed by Endoplasmic reticulum. 16- The primary lysosome is inactive and the Secondary lysosome is active. 17- Important lysosomes hydrolyze the proteins into amino acids. 18- Peroxisomes break down the fatty acids using a process called beta-oxidation: This is the major function of peroxisomes. 19- The nucleus controls and regulates the activities of the cell. 20-Mitosis results in four haploid daughter cells by undergoing one round of DNA replication followed by two divisions. 21- The cell cycle incorporates two principal phases: the interphase, and the M phase (mitosis). 22- The S phase in mitosis division needed about 12.5 to 20 hours in duration. 23-During the G phase, the cell examines its replicated DNA in preparation for cell division. 24- Exocytosis is a Ca2+-dependent process. 25- Phagocytosis means ("cell drinking"). 26- Pinocytosis means ("cell eating "). 27- The energy that causes diffusion…arrow_forwardMatch the organelle to its function. Match the organelle to its function. steroid synthesiscell shape and movement of organellesturgor pressuredetoxification of hydrogen peroxideribosome productionprotein synthesisstorage of hydrolaseinformation centersynthesis of secretory proteinsphotosynthesiscontains pigments in flowersboundary of the cellsynthesis of complex polysaccharidesATP synthesissupport and regulation of cell properties ribosome nucleus rough endoplasmic reticulum Golgi complex chloroplast chromoplast nucleolus peroxisome lysosome central vacuole extracellular matrix mitochondrion cytoskeleton plasma membrane smooth endoplasmic reticulumarrow_forwardThe most energy-intensive process (i.e. requires the most energy) in a cell is lipid catabolism. transcription. carbohydrate synthesis. translation. DNA replication.arrow_forward
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