Gram-positive bacteria have ____ and appear
____ under the microscope.
a. thick walls; pink
b. thick walls; purple
c. thin walls; pink
d. thin walls; purple
e. none of these
B
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In mycorrhizal mutualisms between plants roots and fungi,
A) the plant supplies carbohydrates to the fungus and the fungus supplies phosphorus and nitrogen to the plant. B) the plant supplies water to the fungus and the fungus supplies essential amino acids to the plant. C) the plant protects the fungus from predation and the fungus supplies carbohydrates to the plant. D) the fungus infects the plant roots, stimulating plant growth through myc factors that act as growth hormones in the plant.
How do cattle digest complex plant polysaccharides like cellulose?
A. They have specialized mammalian enzymes to degrade the bonds of cellulose. B. Bacterial populations in one of the four compartments of their stomachs are able to break the bonds between adjacent glucose units of cellulose. C. Mechanical forces of cud-chewing break the cell walls of plant fibers, enabling the cattle to extract the digestible contents of the cells. D. Acids produced in the stomach degrade cellulose.
Which of the following is a basic component
of all of the others?
a. cells d. organism b. organs e. organ systems c. tissues
What is the Coracoid?
What will be an ideal response?