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

Biology & Microbiology

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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.

Biology & Microbiology

____________________ is a vascular tissue that conducts water and dissolved minerals.

A. Phloem B. Mesophyll C. Epidermal D. Xylem E. Sclerenchyma

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology