Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 13TYK
An organism called a plasmodial slime mold is one large cytoplasmic mass with many nuclei. Explain how such a “megacell” could form.
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Whether the statement "Peroxisomes are found in only a few specialized types of eukaryotic cell" is true or false.
Is the cell the fundamental unit of life in plasmodial slime molds? Or is the “whole organism,” regardless of cellular composition, the fundamental unit? Explain your answer.
SECTION
rs of Lab Section:
3.3
FUNGUS-LIKE PROTISTS
Answer the following questions:
v. 20231
What is a possible function of cytoplasmic streaming in the slime mold?
To help distribute and redistribute nutrient throughout
organism.
Hypothesize as to how you think the living slime mold plasmodium (feeding stage) would
react if you warm it up by leaving it on your microscope stage under high illumination for
about 30 minutes?
the
Chapter 8 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 8 - Complete the following table to compare mitosis...Ch. 8 - If an intestinal cell in a grasshopper contains 24...Ch. 8 - Which of the following is not a function of...Ch. 8 - It is difficult to observe individual chromosomes...Ch. 8 - A fruit fly somatic cell contains 8 chromosomes....Ch. 8 - If a fragment of a chromosome breaks off and then...Ch. 8 - Which of the following phases of mitosis is...Ch. 8 - A biochemist measured the amount of DNA in cells...Ch. 8 - A micrograph of a dividing cell from a mouse...Ch. 8 - Cytochalasin B is a chemical that disrupts...
Ch. 8 - Why are individuals with an extra chromosome 21,...Ch. 8 - In the light micrograph below of dividing cells...Ch. 8 - An organism called a plasmodial slime mold is one...Ch. 8 - Prob. 14TYKCh. 8 - Discuss the factors that control the division of...Ch. 8 - Compare cytokinesis in plant and animal cells. In...Ch. 8 - Sketch a cell with three pairs of chromosomes...Ch. 8 - Suppose you read in the newspaper that a genetic...Ch. 8 - Bacteria are able to divide on a faster schedule...Ch. 8 - Prob. 20TYKCh. 8 - A mule is the offspring of a horse and a donkey. A...Ch. 8 - Prob. 22TYK
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- A prokaryote converts food energy into the chemical energy of ATP on/in its: chromosome. flagella. ribosomes. cell wall. plasma membrane.arrow_forwardParamecia live mostly in freshwater and move with the use of structures called cilia. They utilize contractile vacuoles to expel water that enters the cell by osmosis. Euglena are unicellular organisms that use flagella for movement and chloroplasts for photosynthesis. They are found in freshwater and saltwater. Scientists have determined that Paramecia and Euglena are eukaryotes and not prokaryotes because they havearrow_forwardWhich of the following is true of the flagellum in eukaryotes? It is a long, thin extracellular (exterior) structure, with a basal motor embedded in the cell membrane/cell wall. It is identical to the archaeal flagellum (archaellum) in composition and structure, but very different in composition and structure from bacterial flagella. It is a long, thin structure containing bundles of microtubules and motor proteins, all within the plasma membrane. Eukaryotic cells do not possess flagella.arrow_forward
- In general terms, describe the structure and content of a "typical" protozoan and show how it largely conforms to that of a eukaryotic cell.arrow_forwardA cell diagram is 18mm long, which is 200x larger than life size. How large is the actual cell?arrow_forwardWhile looking through your microscope under 100X total magnification you see a irregular shaped cell (a blob) with an obvious nucleus. You can also see the circulating cytoplasm in the cell cause a portion of the plasma membrane to bulge out in one direction allowing the cell to move to a new location on the slide. What kind protozoan would you say this was?arrow_forward
- Put a checkmark (1) on the group where each of the following structures are present. Cellular Structures Plantae Animalia FungiProtista Monera 1. Nucleus 2. Nucleoid 3. Nucleolus 4. Ribosomes 5. Golgi Body 6. Endoplasmic reticulum 7. Plasma membrane 8. Centriole 9. Cell wall 10. Chloroplast 11. Mitochondria 12. Cytoplasm 13. Cytoskeleton 14.Pigments 15. DNAarrow_forwardFill in the blank with the name of the cell structure that fits the description. 1. short, hair-like projections for movement of substances along cell surface 2. intracellular fluid 3. site of energy production by cellular respiration 4. site of protein synthesis 5. site of steroid and fatty acid synthesis 6. small vesicle with digestive enzymes 7. organelles needed to form cilia and flagella 8. thread-like strand of DNA with associated proteins 9. site of secretory and membrane protein synthesis 10. site where protein products are stored, packaged, and exported 11. contains DNA that control cellular activities 12. site of ribosome synthesis 13. gives the cell shape, support, movement, and holds organelles in position 14. controls movement of substances into or out of the cellarrow_forwardANSWER BOXED RED QUESTIONarrow_forward
- 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…arrow_forwardAn autotrophic protist, such as a diatom or a dinoflagellate, can evolve into a heterotrophic protist (and therefore a protozoan) simply by losing its chloroplasts. Under what conditions might this take place?arrow_forwardMatch the description with the organism Description- -the fused cells possess a total of two equal-sized nuclei and four flagella -has an organized mass of DNA within its mitochondrion -have one flagellum in a sulcus while the second flagellum in a cingulum -has a photoreceptor and an eyespot near a pocket-like structure -has thin,…arrow_forward
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