Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 7TYU
SCIENTIFIC INQUIRY In studying micrographs of an unusual protist (single-celled eukaryote) that you found in a sample of pond water, you spot an organelle that you can’t recognize. You successfully develop a method for growing this organism in liquid in the laboratory. Describe how you would go about finding out what this organelle is and what it does in the cell. Assume that you would make use of additional microscopy, cell fractionation, and biochemical tests.
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You are studying amoebas and paramecia, two different single-celled protozoans. You have at your disposal a standard white light
(known as "bright-field") microscope, a fluorescence microscope, a scanning electron microscope, and a transmission electron
microscope. For each of the following studies, indicate which type of microscope would be most useful.
Items (6 items) (Drag and drop into the appropriate area below)
Take movies of
unmanipulated
cells swimming
or crawling in a
drop of water.
Categories
View three-
dimensional
images of the
outer surface of a
paramecium,
including cilia.
bright-field
Drag and drop here
View cytoplasmic
streaming
(movement of
organelles within
the cytoplasm) in
a paramecium.
fluorescence
Drag and drop here
Stain and
visualize
chromosomes
and mitotic
spindles in
dividing
amoebae.
Visualize
ribosomes in the
cytosol and
mitochondria of
amoebas.
scanning electron
Drag and drop here
Use labeled
antibodies to
locate and make
color images of
lysosomes in
both…
The Size of Cells and Their Components:
a. (a) If you were to magnify a cell 10,000 fold (typical of
the magnification achieved using an electron microscope),
how big would it appear? Assume you are viewing a "typical"
eukaryotic cell with a cellular diameter of 50 um.
Scanning electron microscope can be used for ()
A. Observe images of different sections of cells
B. Observe living cells
C. Quantitative analysis of chemical composition in cells
D. Observation of cell surface stereomorphology
E. Observation of cellular activity
Chapter 4 Solutions
Campbell Biology in Focus
Ch. 4.1 - Prob. 1CCCh. 4.1 - Prob. 2CCCh. 4.2 - Briefly describe the structure and function of the...Ch. 4.2 - Prob. 2CCCh. 4.3 - What role do ribosomes play in carrying out...Ch. 4.3 - Describe the molecular composition of nucleoli,...Ch. 4.3 - WHAT IF? As a cell begins the process of dividing,...Ch. 4.4 - Describe the structural and functional...Ch. 4.4 - Describe how transport vesicles integrate the...Ch. 4.4 - WHAT IF? Imagine a protein that functions in the...
Ch. 4.5 - Describe two characteristics shared by...Ch. 4.5 - Prob. 2CCCh. 4.5 - Prob. 3CCCh. 4.6 - Prob. 1CCCh. 4.6 - WHAT IF? Males afflicted with Kartageners syndrome...Ch. 4.7 - In what way are the cells of plants and animals...Ch. 4.7 - Prob. 2CCCh. 4.7 - MAKE CONNECTIONS The polypeptide chain that makes...Ch. 4.8 - Colpidium colpoda is a unicellular protist that...Ch. 4 - Which structure is not part of the endomembrane...Ch. 4 - Which structure is common to plant and animal...Ch. 4 - Which of the following is present in a prokaryotic...Ch. 4 - Cyanide binds to at least one molecule involved in...Ch. 4 - Which cell would be best for studying lysosomes?...Ch. 4 - DRAW IT From memory, draw two eukaryotic cells....Ch. 4 - SCIENTIFIC INQUIRY In studying micrographs of an...Ch. 4 - FOCUS ON EVOLUTION Compare different aspects of...Ch. 4 - FOCUS ON ORGANIZATION Considering some of the...Ch. 4 - Prob. 10TYU
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- PART D: CALCULATING THE ACTUAL SIZE OF A CELL. Once you know your microscope's diameter of the field of view, you can now calculate the actual size of your specimen. The ACTUAL SIZE of the specimen is the real size of the cell you are looking at. When you look at the cells through the microscope. the cells look very tiny. It is possible to determine the actual size of the cells you are looking at under LP.MP and HP. We will determine the actual size of a cell u I under HP. Step 1- Look at the cells under HP MAG. Step 2- Pick one cell you want to know the size of. Step 3- Imagine that this cell is placed along the left side of the field of view. (see example) Step 4-Estimate how many cels could fit across the field of view. Step 5- Record your answer Step 6- Use the formula below to calculate the actual size of your cell NOTE: Cells are very tiny therefore; the size of a cell is calculated in micrometers (um) and not mm. Cell size in (mm) ACTUAL SIZE OF CELL= HIGH POWERFOV.diameter of…arrow_forwardWhat differences are there between a free-living, single-celled organism such as a paramecium and a single human cell such as a ciliated cell of the respiratory tract? Use cited.arrow_forwardYou are using a computer program to design a new single-celled organism. Discuss why a flat, plate-like cell will be more efficient in transporting materials than a spherical, ball-like cell of the same volume.arrow_forward
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