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TLS Online TPP Program

#Question id: 7260

There are maternally-determined variations along the animal-vegetal axis that are necessary for normal development in sea urchin. Which of the following statements about regulation in sea urchin embryos is consistent with that fact?

#Unit 5. Developmental Biology
  1. Up until the hatching of the embryo as a pluteus larva, any blastomere can be separated from the others and will regulate to go on and develop into a fully formed and full size larva.
  2. Up until the hatching of the embryo as a pluteus larva, any blastomere can be separated from the others and will regulate to go on and develop into a fully formed, yet smaller, larva.
  3. Blastomeres from the animal or vegetal poles of the embryo can be isolated and will go on to form an embryo, as long as either an animal or vegetal pole is included.
  4. Blastomeres at the 4-cell stage each still possesses a portion of the original animal-vegetal axis, and if isolated will go on to form a fully formed, yet smaller, larva.
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TLS Online TPP Program

#Question id: 12307

#Unit 7. System Physiology – Animal

If a person has a kidney transport maximum for glucose of 350 mg/min, a GFR of 100 ml/min, a plasma glucose of 150 mg/dL, a urine flow rate of 2 ml/min, and no detectable glucose in the urine, what would be the approximate rate of glucose reabsorption, assuming normal kidneys?
TLS Online TPP Program

#Question id: 12308

#Unit 7. System Physiology – Animal

 Which of the following statements is correct?
TLS Online TPP Program

#Question id: 12309

#Unit 10. Ecological Principles

Which statement below about mating behavior is incorrect?
TLS Online TPP Program

#Question id: 12310

#Unit 10. Ecological Principles

Which of the following statements about evolution of behavior is correct?
TLS Online TPP Program

#Question id: 12311

#Unit 10. Ecological Principles

Animals tend to maximize their energy intake- to- expenditure ratio. What is this behavior called?
TLS Online TPP Program

#Question id: 12312

#Unit 10. Ecological Principles

Feeding behavior with a high energy intake- to- expenditure ratio is called