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TLS Online TPP Program

#Question id: 1033

 A research lab is trying to produce new antibiotics. They come up with drugs that detach the hydrophilic heads from the phospholipids in plasma membranes. This drug

#SCPH28 | Zoology

  1. would be highly toxic and completely useless for human beings-we also have plasma membranes with hydrophilic head groups!

  2. would be highly toxic only to bacteria, making it an excellent drug to develop and test further. Humans have a different phospholipid structure in their cell plasma membranes than bacteria.

  3. would generally not be toxic enough to damage Gram-negative bacteria, as their plasma membranes lie under a thick layer of peptidoglycan.

  4. would be highly toxic for human beings, but might be useful as a topical antibiotic skin cream. The top layer of skin cells is dead anyway, so it wouldn't matter if this damaged those cells. It could NOT be taken internally, though, by human beings. 

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TLS Online TPP Program

#Question id: 10962

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

A 24-year-old man came into the ER with a broken leg. A blood test was ordered and his WBC count was 22 × 10^3/μl. Five hours later, a second blood test resulted in values of 7 × 10^3/μl. What is the cause of the increased WBC count with the first test?
TLS Online TPP Program

#Question id: 10963

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

During an inflammatory response, which is the correct order for cellular events?
TLS Online TPP Program

#Question id: 10964

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

A patient visits his dentist, who notices a sore on the patient’s lip. The sore was unusual in that there was no pain or drainage from the sore. The patient was subsequently admitted to the hospital with a violent shaking chill. His lab values were Hct 30%, platelets 400,000/μl, WBC 4200/μl, 68% lymphocytes, and 20% neutrophils. What is the diagnosis of this patient?
TLS Online TPP Program

#Question id: 10965

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

Which of the following is a TRUE statement?
TLS Online TPP Program

#Question id: 10966

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

A couple requests blood typing of their 2-year-old child (father AB, Rh-negative; mother B, Rhnegative). Results of hemagglutination assays of the child’s blood are shown in the next figure. Which of the following conclusions concerning the child’s parentage is valid?
TLS Online TPP Program

#Question id: 10967

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

A 21-year-old female, blood type B, is undergoing surgery. Her platelet count is 75,000/μl. She will need platelet infusions before and during surgery. Which of the following blood types would be used to collect platelets that are compatible with the patient?