Which of the following is the first activated intermediate in the bacterial sulfur assimilation pathway?

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#Question id: 2052

#XL - S Microbiology

Why have pigs have been proposed as a source of organs for xenotransplantation to humans?

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#Question id: 15673

#XL - S Microbiology

A urine sample with more than 100,000 organisms is considered indicative of infection. A urine sample containing 5,000 bacteria, with a generation time of 30 minutes, sits for 3 hours before finally being assayed. How many bacteria will then be present within the sample?

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#Question id: 11924

#XL - S Microbiology

The largest seaweeds belong to which group?

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#Question id: 3791

#XL - Q Biochemistry

 In vitro systems used to study replication must include all of the following except:

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#Question id: 11009

#XL - T Zoology

What is the normal total delay of the cardiac impulse in the A-V node plus bundle?