A teenaged boy with numerous nosebleeds was referred to a physician for evaluation prior to a minor surgery. His prothrombin time (PT) was 11 sec (11–15 sec normal), partial thromboplastin time (PTT) was 58 sec (25–40 sec normal), and bleeding time was 6.5 min (2–7 min normal). Which of the following is most likely abnormal in this young man?

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#Question id: 5845

#SCPH28 | Zoology

Which of the following statements is false?  In vitro, the strand-exchange reaction:

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#Question id: 15236

#SCPH28 | Zoology

Polyacrylamide gels are formed from the polymerisation of acrylamide monomer in the presence of

A) Agarose

B) TEMED

C) APS

D) bis-acrylamide

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#Question id: 1032

#SCPH28 | Zoology

A research laboratory is investigating environmental factors that would inhibit the growth of Archaea. One question they have is if adding the antibiotic penicillin would be effective in controlling their growth. What do you think the outcome would be if they tried this?

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#Question id: 676

#SCPH06 I Botany

What would you expect about the formation of an α-helix for a segment of a protein chain that contains lysine approximately every fourth residue with all other residues being mostly hydrophobic?

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#Question id: 23247

#SCPH28 | Zoology

In pyrosequencing which molecule is actually detected?