In the human disease known as lupus, there is an immune reaction against a patientʹs own DNA from broken or dying cells. This kind of response typifies which kind of irregularity?

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#Question id: 5757

#XL - S Microbiology

A new E. coli mutant was tested for auxotrophy. The mutant grows on:

minimal medium (M) + arginine (A) + proline (P)

M + P + histidine (H)

M + A + H + P

but not on M or on M + A + H. The mutant requires

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#Question id: 10340

#XL - Q Biochemistry

There several charecteristics of nitrate reductase, which of the following properties of nitrate reductase is incorrect?

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#Question id: 2208

#XL - Q Biochemistry

Which of the following statements is a reasonable explanation for why unsaturated fatty acids help keep a membrane more fluid at lower temperatures?

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#Question id: 2047

#XL - S Microbiology

A high antibody response to an antigen such as (TG)-A-L in a given mouse strain:

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#Question id: 11502

#XL - S Microbiology

Which of these statements is false and therefore does not support the hypothesis that certain eukaryotic organelles originated as bacterial endosymbionts? Such organelles