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TLS Online TPP Program

#Question id: 1045

Why would it be more difficult to treat diseases in humans caused by members of the Eukarya than diseases caused by the Bacteria?

#Unit 4. Cell Communication and Cell Signaling

  1. Multicellular organisms always have their own immune systems to contend with-so any treatment we develop needs to overcome this built-in protection mechanism in such organisms.

  2. Since bacteria are so much simpler (being single-celled), they are inherently easier to kill off than multi-cellular eukaryotic microbes.

  3. Eukaryotic microbes use many of the same enzymes and systems as humans-so we lose the ability to target certain molecules that might be present ONLY in the cell type we want to eliminate. There's too much overlap when both organisms are eukaryotic.

  4. Eukaryotic microbes (unlike prokaryotes) often secrete compounds that breakdown and eliminate drugs used against them. This makes them much harder to effectively eliminate than bacteria.

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TLS Online TPP Program

#Question id: 11787

#Unit 7. System Physiology – Animal

Giving prostaglandin E2 (PGE2) to a pregnant woman may result in an abortion. What is the best explanation for this finding?
TLS Online TPP Program

#Question id: 11788

#Unit 7. System Physiology – Animal

During the first few years after menopause, follicle-stimulating hormone (FSH) levels are normally extremely high. A 56-year-old woman completed menopause 3 years ago. However, she is found to have low levels of FSH in her blood. Which of the following is the best explanation for this finding?
TLS Online TPP Program

#Question id: 11796

#Unit 7. System Physiology – Animal

Which of the following hormones is largely unbound to plasma proteins?
TLS Online TPP Program

#Question id: 11946

#Unit 7. System Physiology – Animal

A 3-week-old infant is brought to the emergency room in a comatose condition. The history reveals that her parents have been feeding her concentrated, undiluted formula for 5 days. (Infant formula preparations are often sold in concentrated forms that must be properly diluted with water before feeding.) The infant’s plasma osmolality is 352 mOsm/L (normal is 280 to 300 mOsm/L), and the osmolality of the urine is 497 mOsm/L. What is the explanation for the hyperosmotic condition of the plasma?
TLS Online TPP Program

#Question id: 11947

#Unit 7. System Physiology – Animal

Why is milk produced only after delivery, not before?
TLS Online TPP Program

#Question id: 11948

#Unit 7. System Physiology – Animal

Which of the following increases the rate of excretion of calcium ions by the kidney?