Domanda del libro di testo
How does the hydrolysis of ATP result in the movement of a motor protein along a cytoskeletal filament?
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Ch. 7 - Inside the Cell
Freeman8th EditionBiological ScienceISBN: 9780138276263
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TOC.tableOfContents
- Ch. 1 - Biology: The Study of Life13
- Ch. 2 - Water and Carbon: The Chemical Basis of Life14
- Ch.3 - Protein Structure and Function10
- Ch.4 - Nucleic Acids and the RNA World10
- Ch. 5 - An Introduction to Carbohydrates10
- Ch. 6 - Lipids, Membranes, and the First Cells11
- Ch. 7 - Inside the Cell10
- Ch. 8 - Energy and Enzymes: An Introduction to Metabolism10
- Ch. 9 - Cellular Respiration and Fermentation11
- Ch. 10 - Photosynthesis12
- Ch. 11 - Cell-Cell Interactions12
- Ch. 12 - The Cell Cycle8
- Ch. 13 - Meiosis12
- Ch. 14 - Mendel and the Gene23
- Ch. 15 - DNA and the Gene: Synthesis and Repair15
- Ch. 16 - How Genes Work16
- Ch. 17 - Transcription, RNA Processing, and Translation16
- Ch. 18 - Control of Gene Expression in Bacteria16
- Ch. 19 - Control of Gene Expression in Eukaryotes12
- Ch. 20 - The Molecular Revolution: Biotechnology, Genomics, and New Frontiers15
- Ch. 21 - Genes, Development, and Evolution12
- Ch. 22 - Evolution by Natural Selection16
- Ch. 23 - Evolutionary Processes13
- Ch. 24 - Speciation15
- Ch. 25 - Phylogenies and the History of Life13
- Ch. 26 - Bacteria and Archaea15
- Ch. 27 - Diversification of Eukaryotes16
- Ch. 28 - Green Algae and Land Plants16
- Ch. 29 - Fungi18
- Ch. 30 - An Introduction to Animals9
- Ch. 31 - Protostome Animals15
- Ch. 32 - Deuterostome Animals17
- Ch. 33 - Viruses16
- Ch. 34 - Plant Form and Function16
- Ch. 35 - Water and Sugar Transport in Plants16
- Ch. 36 - Plant Nutrition13
- Ch. 37 - Plant Sensory Systems, Signals, and Responses16
- Ch. 38 - Flowering Plant Reproduction and Development16
- Ch. 39 - Animal Form and Function17
- Ch. 40 - Water and Electrolyte Balance in Animals16
- Ch. 41 - Animal Nutrition16
- Ch. 42 - Gas Exchange and Circulation16
- Ch. 43 - Animal Nervous Systems16
- Ch. 44 - Animal Sensory Systems16
- Ch. 45 - Animal Movement11
- Ch. 46 - Chemical Signals in Animals16
- Ch. 47 - Animal Reproduction and Development16
- Ch. 48 - The Immune System in Animals16
- Ch. 49 - An Introduction to Ecology15
- Ch. 50 - Behavioral Ecology16
- Ch. 51 - Population Ecology16
- Ch. 52 - Community Ecology20
- Ch. 53 - Ecosystems and Global Ecology17
- Ch. 54 - Biodiversity and Conservation Ecology18
Freeman8th EditionBiological ScienceISBN: 9780138276263Non è quello che usi tu?Cambia libro di testo
Capitolo 7, Problema 5
Which of the following cell structures would you expect to be most important in the growth of bacteria on the surface of your teeth?
a. Cell wall
b. Fimbriae
c. Flagella
d. Cilia
Guida verificata passo dopo passo1
Understand the function of each cell structure option provided: cell wall, fimbriae, flagella, and cilia.
Cell walls provide structural support and protection, but are not directly involved in attachment to surfaces.
Fimbriae are hair-like structures that allow bacteria to adhere to surfaces, which is crucial for growth on teeth.
Flagella are tail-like structures used for movement, not attachment, so they are less relevant for bacteria adhering to teeth.
Cilia are similar to flagella but are typically found in eukaryotic cells, not bacteria, and are used for movement rather than attachment.
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Fimbriae
Fimbriae are hair-like appendages on the surface of bacterial cells that enable them to adhere to surfaces, such as the enamel of teeth. This adhesion is crucial for bacteria to colonize and form biofilms, which are communities of bacteria that contribute to dental plaque formation. Understanding fimbriae is essential for recognizing how bacteria establish themselves in the oral cavity.
Video consigliato:
01:52
Fimbriae
Biofilm Formation
Biofilms are structured communities of bacteria that attach to surfaces and are embedded in a self-produced extracellular matrix. In the context of dental health, biofilms on teeth can lead to plaque formation, which is a precursor to cavities and gum disease. The ability of bacteria to form biofilms is a key factor in their growth and persistence on teeth surfaces.
Video consigliato:
03:31Introduction to Biofilms
Bacterial Adhesion
Bacterial adhesion is the process by which bacteria attach to surfaces, a critical step in colonization and biofilm formation. This process often involves specific structures like fimbriae, which facilitate the initial attachment to surfaces such as teeth. Understanding bacterial adhesion helps explain how bacteria can persist in the oral environment and contribute to dental issues.
Video consigliato:
04:16Properties of Water- Cohesion and Adhesion
Pratica correlata
Domanda del libro di testo
Most of the proteins that enter the nucleus possess a nuclear localization signal (NLS), even if they are small enough to pass through the nuclear pore complex unhindered. Why would a small protein have an NLS, when it naturally diffuses across the nuclear pore complex without one?
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Domanda del libro di testo
The eukaryotic cytoskeleton is a highly dynamic network of filaments and motor proteins. Which of the following correctly describe activities of these cytoskeletal components? Select True or False for each statement.
T/FMyosin motors walk toward the plus ends of intermediate filaments.
T/FDynein motors are responsible for the whip-like movement of eukaryotic flagella.
T/FKinesin motors move vesicles along tracks toward the microtubule-organizing center.
T/FActin filaments are required for cytoplasmic streaming.
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Domanda del libro di testo
Molecular zip codes direct molecules to particular destinations in the cell. How are these signals read?
a. They bind to receptor proteins.
b. They enter transport vesicles.
c. They bind to motor proteins.
d. They are glycosylated by enzymes.
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Domanda del libro di testo
Cells that line your intestines are known to possess a large number of membrane proteins that transport small molecules and ions across the plasma membrane. Which of the following cell structures would you expect to be required for this characteristic of the cells?
a. The endoplasmic reticulum
b. Peroxisomes
c. Lysosomes
d. The cell wall
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Domanda del libro di testo
Which of the following results provided evidence of a discrete nuclear localization signal somewhere on the nucleoplasmin protein?
a. The nucleoplasmin protein was small and easily slipped through the nuclear pore complex.
b. After cleavage of the nucleoplasmin protein, only the tail segments appeared in the nucleus.
c. Removing the tail from the nucleoplasmin protein allowed the core segment to enter the nucleus.
d. The SRP bound only to the tail of the nucleoplasmin protein, not the core segment.
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