Which of the following disorders results from an adult getting an insufficient amount of vitamin D, which results in demineralized, brittle bones?
What will be an ideal response?
Osteomalacia
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Systemic acquired resistance is
A. a broad-ranging resistance that lasts for a period of days. B. the same as the human immune response. C. a response whereby antibodies recognize specific antigens. D. a response that occurs when the hypersensitive response fails. E. a method for plants to modify their DNA for protection.
____________________ is a vascular tissue that conducts water and dissolved minerals.
A. Phloem B. Mesophyll C. Epidermal D. Xylem E. Sclerenchyma
An energy barrier
A) is the amount of energy that must be produced by the reactants to end a chemical reaction. B) is higher than the activation energy of a reaction. C) prevents the spontaneous breakdown of molecules in the cell. D) can only be overcome with the use of enzymes.
Which of the following is not true of the light-dependent reactions of photosynthesis?
A. They generates NADPH. B. Photons cause magnesium to release electrons. C. ATP is generated by a chemiosmotic mechanism. D. They occur in the thylakoid membranes. E. They generate glucose from CO2 and H2O.