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TLS Online TPP Program

#Question id: 1032

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?

#SCPH06 I Botany

  1. The penicillin wouldn't affect the Archaea because it prevents crosslinking of peptidoglycan-Archaea don't have this compound in their cell walls.

  2. The penicillin will inhibit cell wall formation in the Archaea, killing them.

  3. The penicillin will slow down the growth of the Archaea by damaging the cell wall, but they will still be able to grow somewhat.

  4. The penicillin will enhance the growth of the Archaea by providing a rich nutrient source.

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TLS Online TPP Program

#Question id: 11009

#I Life Science/ Life Sciences Group – I-V

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

#Question id: 11010

#I Life Science/ Life Sciences Group – I-V

Which of the following best explains how sympathetic stimulation affects the heart?
TLS Online TPP Program

#Question id: 11011

#I Life Science/ Life Sciences Group – I-V

Which of the following conditions at the S-A node will cause heart rate to decrease?
TLS Online TPP Program

#Question id: 11013

#I Life Science/ Life Sciences Group – I-V

What is the heart rate in the following EKG?
TLS Online TPP Program

#Question id: 11014

#I Life Science/ Life Sciences Group – I-V

What is the normal QT interval?
TLS Online TPP Program

#Question id: 11015

#I Life Science/ Life Sciences Group – I-V

A 65-year-old man had an EKG recorded at a local emergency room following a biking accident. His weight was 80 kg and his aortic blood pressure was 160/90 mm Hg. The QRS voltage was 0.5 mV in lead I and 1.5 mV in lead III. What is the QRS voltage in lead II