To evaluate kidney function in a 45-year-old woman with type II diabetes, you ask her to collect her urine over 24 hours. She collects 3600 ml of urine in that period. The clinical laboratory returns the following results after analyzing the patient’s urine and plasma samples: plasma creatinine = 4 mg/dL, urine creatinine = 32 mg/dL, plasma potassium = 5 mmol/L, and urine potassium = 10 mmol/L.

What is this patient’s approximate GFR, assuming that she collected all her urine in the 24-hour period?

TLS Online TPP Program

#Question id: 12226

#Unit 10. Ecological Principles

Which  of  the  following  types  of  species interaction is  correctly paired with  its  effects  on  the  density  of  the  two interacting populations?

TLS Online TPP Program

#Question id: 12227

#Unit 10. Ecological Principles

During the course of the formation of a parasite/host relationship, a critical first step in this evolution would be

TLS Online TPP Program

#Question id: 12228

#Unit 10. Ecological Principles

Which of the following examples best describes an ecological community?

TLS Online TPP Program

#Question id: 12229

#Unit 10. Ecological Principles

Community ecologists would consider which of the following to be most significant in understanding the structure of an ecological community?

TLS Online TPP Program

#Question id: 12230

#Unit 10. Ecological Principles

Historically, most ecological research on the community has focused on which of the following? 

TLS Online TPP Program

#Question id: 12231

#Unit 10. Ecological Principles

Which of the following studies would a community ecologist undertake to learn about competitive interactions?