Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 40, Problem 3DAA
Summary Introduction
To determine: Whether switching to an organic diet lowers the amount of pesticide residues excreted by the children.
Concept introduction: Conventionally, in fruits, vegetables, and grains that are produced, pesticides are used. Pesticides such as malathion and chlorpyrifos are neurotoxicant. At high levels, they work by inhibiting acetylcholinestrase. This can lead to paralysis, breathing problem, and even death. Due to its toxic effect, the fruits and vegetable are produced through organic farming without use of pesticides and gain the USDA’s organic label.
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A patient comes to your medical practice with complaints of low urine output (not peeing). You use inulin to calculate the glomerular filtration rate (GFR) using the following information: Plasma level (P – constant over 24 hours): 10 mg/mL inulin. Urine sample (U): 144 mg inulin/mL urine. Urine formation (V): 10 mL/min. Using the fromula GFR=V ✕ U/P, you calculate a GFR of ...
A) 144mL/min..
B) 14400 mL/min.
C) 144 min./mL.
D) 144 g mannitol/min.
Urine dilution by the loop of Henle is dependent on the length of the loop, being more diluted, the longer the loop.
True or false
Use the following information to answer the next question.
Patient
Glucose in Urine (mmol/L)
Urine Output (mL/day)
A
0.0
1 550
B
0.3
4 300
C
1.0
6 000
D
0.0
8 100
Which row represents the urine glucose level of a normal patient and the urine volume of a patient with untreated diabetes insipidus, respectively?
Select one:
a. A and C
b. A and D
c. B and C
d. B and D
Chapter 40 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 40 - Prob. 1SQCh. 40 - Body fluids of a marine bony fish have a solute...Ch. 40 - Bowman's capsule, the start of the tubular part of...Ch. 40 - Fluid that enters Bowman's capsule flows directly...Ch. 40 - Prob. 1DAACh. 40 - Prob. 2DAACh. 40 - Prob. 3DAACh. 40 - Prob. 4DAACh. 40 - Blood pressure forces water and small solutes into...Ch. 40 - Kidneys return most of the water and small solutes...
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