A 24-year-old African-American man comes to the emergency room 3 hr after the onset of severe back and chest pain. These problems started while he was skiing. He lives in Los Angeles and had a previous episode of these symptoms 5 years ago while visiting Wyoming. He is in obvious pain. Laboratory studies show the following:

Hemoglobin                                        11 gm/dl

Leukocyte count                                 22,000/μl3

Reticulocyte count                              25%

What is the diagnosis of this patient?

TLS Online TPP Program

#Question id: 12767

#Unit 10. Ecological Principles

Your friend comes to you with a problem. It seems his shrimp boats aren’t catching nearly as much shrimp as they used to. He can’t understand why because originally he caught all the shrimp he could handle. Each year he added a  new  boat,  and  for  a  long  time  each  boat  caught  tons  of  shrimp.  As  he  added  more  boats,  there  came  a  time when each boat caught somewhat fewer shrimp, and now, each boat is catching a lot less shrimp. Which of the following topics might help your friend understand the source of his problem?

TLS Online TPP Program

#Question id: 12768

#Unit 10. Ecological Principles

Carrying capacity is

TLS Online TPP Program

#Question id: 12769

#Unit 10. Ecological Principles

Which of the following graphs refer to this equation? 

TLS Online TPP Program

#Question id: 12770

#Unit 10. Ecological Principles

Which of the following graphs illustrates the population growth curve of single bacterium growing in a flask of ideal medium at optimum temperature over a 24 -hour period? 

TLS Online TPP Program

#Question id: 12771

#Unit 10. Ecological Principles

Which of the following graphs illustrates the growth curve of a small population of rodents that has grown to reach a static carrying capacity? 

TLS Online TPP Program

#Question id: 12772

#Unit 10. Ecological Principles

Which of the following is a likely graphic outcome of a population of deer introduced to an island with an adequate herbivory and without natural predators, parasites, or disease?