A deficiency of vitamin D causes

1.scurvy.
2.rickets.
3.kidney stones.
4.a goiter.
5.dwarfism.


2

Biology & Microbiology

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____ are phagocytes that engulf bacteria and cellular debris

a. Eosinophils b. Leucocytes c. Monocytes d. Platelets e. Neutrophils

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Respond to the following statements with reference to the five plant micronutrients listed below.

A. This nutrient is a component of chlorophyll and many enzymes. B. This nutrient plays an important role in cell wall formation. C. This nutrient is a cofactor in photosystem II and also functions in signaling. D. This nutrient is a component of many proteins, and serves as cofactor for many enzymes. E. This nutrient is involved as cofactor in electron transfer chains.

Biology & Microbiology

Structurally similar receptor tyrosine kinases have been found in all multicellular animals. This

suggests that ________.

a. RTK genes are resistant to mutation b. RTKs evolved relatively early in the history of animals c. RTKs evolved from G proteins d. RTKs cannot be involved in processes vital to animals e. RTKs have evolved independently of each other in animals

Biology & Microbiology

"The total amount of mass-energy in the universe is constant," is a statement of

A) the first law of thermodynamics. B) the second law of thermodynamics. C) thermodynamic spontaneity. D) entropy. E) enthalpy.

Biology & Microbiology