Describe how the structure of the bacterial cytoplasmic membrane relates to its function of selective permeability
What will be an ideal response?
The structure and function of the cytoplasmic membrane are explained in the fluid mosaic model. The cytoplasmic membranes of bacterial cells are composed of phospholipids, which create a semipermeable barrier to the cell's outer environment. The only molecules that can easily cross the membrane are small, lipid soluble molecules. Other types of molecules must use the wide variety of transport proteins embedded in the phospholipid bilayer to cross the membrane. In this way, the cell can control the concentration of both its nutrients and its waste products. The cytoplasmic membrane can also be used for energy production and for photosynthesis in prokaryotic cells.
Bloom's Taxonomy: Application
Section: Bacterial Cytoplasmic Membranes
Learning Outcome: 3.15
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The experiments of Hershey and Chase
1.used radioactive phosphorus to label DNA and radioactive sulfur to label proteins. 2.used radioactive sulfur to label DNA and radioactive phosphorus to label proteins. 3.used mice. 4.demonstrated the transforming principle. 5.showed that protein entered the bacterial cells.
Insulin is produced by the:a
beta cells of the islets of Langerhans. b. alpha cells of the islets of Langerhans. c. cortical cells of the adrenal gland. d. neurons in the hypothalamus. e. lobules of the liver.
Choanocytes are a characteristic of members of the phylum Cnidaria
____________________ Indicate whether the statement is true or false.