Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?

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#Question id: 18380

#XL - S Microbiology

A commonly used municipal wastewater treatment to restart activated sludge bioreactors. Which technique is involved in this remediation process?

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#Question id: 1630

#XL - S Microbiology

Which of the following statements is TRUE of plasma cells?

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#Question id: 20133

#XL - P Chemistry

For the combustion of 1 mole of liquid benzene at 25ºC, the heat of reaction at constant pressure is given by, C6H6(l) + 7 O2 (g) → 6CO2 (g) + 3H2O (l); DH = –780980 cal.

What would be the heat of reaction at constant volume?

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#Question id: 5242

#XL - T Zoology

Auxotrohic bacteria plating on different medium, it is observed that colonies grow on minimal plus threonine only, no colony on minimal plus leucine and no colonies grow on minimal medium cystein only. What are the actual genotypes of auxotroph?

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#Question id: 165

#XL - T Zoology

Amino acids are ampholytes because they can function as either a(n):