A patient can produce antibodies against some bacterial pathogens, but he does not produce antibodies against viral infections. This is probably due to a disorder in which cells of the immune system?

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#Question id: 16014

#Section 6: Plant, Animal and Microbial Biotechnology

What are the main constituents of culture for animal cell growth?

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#Question id: 15497

#Section 4: Fundamentals of Biological Engineering

A. aceti converts alcohol to acetic acid according to the stoichiometric relation

C₂H₅OH + O₂ 🡪CH₃COOH + H₂O

In a vigorously agitated and aerated reactor containing 20 g/l ethanol, the organism produces 16 g/l acetic acid and 2 g/l was the residual ethanol concentration. What are the theoretical and observed yields of acetic acid expressed in g/g ethanol?

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#Question id: 3806

#Section 3: Genetics, Cellular and Molecular Biology

How are damaged nucleotides recognized by DNA repair enzymes?

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#Question id: 18087

#Section 1: Engineering Mathematics

Each of five questions on a multiple-choice examination has four choices, only one of which is correct. The student is attempting to guess the answers. The random variable X is the number of questions answer correctly. Probability that the student will get

Exactly three correct answers

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#Question id: 27142

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Calculate the percentage sequence identity for the pairwise alignment given below: