Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Question
Chapter 2.5, Problem 5CC
Summary Introduction
To determine:
How many molecules of ghrelin are present in 1L of blood if concentration of appetite regulating hormone ghrelin is present about 1.3 x 10-10 in a blood of a fasting person?
Introduction:
Appetite regulating hormone is also known as hunger hormone. Hunger hormone is of two types: leptin and ghrelin. Leptin is a hormone made up of fat cells that help to reduce the appetite and are responsible for weight loss while ghrelin raises the appetite and also involve in gain of body weight. Ghrelin is made up of 28 amino acids produced in stomach.
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Nernst: Ex =RT In
[X]。
[X]
Goldman: Em =RT In
PNa [Na]o+ Pk+[K+]o + Pai-[CI-]i
PNa [Na]+Pk+ [K] + Pai-[CI]o
1. Calculate the reversal potential for sodium, potassium, and cloride at human
body temperature if:
[Na]o = 464 mM,
[Na] 11 mM,
[K] 36 mM,
[K]=499 mM,
[Cl] = 424 mM,
[CI]=34 mM
ENa+ =
Ex+ =
Ecl-
Calculate glucose concentration.
Na (sodium) and glucose secondary active
transport.
Na transport (which drive glucose import)
G=R*T*In(Na in/ Na out)+Z*F*Y(psi symbol)
Na in=14mM
Na out=145MM
Z=+1
F=96.5 KJ/V*mol
Y(psi)=-0.05V
What is the glucose in and out
concentration?
Please be very through when explaining
this calculation.
(I am stuck at why the energy sign changes
from negative to positive when using the
calculated energy from sodium to glucose)
GenAlex Medical, a leading manufacturer of medical laboratory equipment, is designing a new automated system that can detect normal levels of dissolved glucose (70. to 105 mg/dL), using a blood sample that is as small as 5.0 mL.
Calculate the minimum mass in milligrams of glucose that the new system must be able to detect.
Be sure your answer has the correct number of significant digits.
Chapter 2 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 2.1 - Is a trace element an essenteal element? Explain.Ch. 2.1 - Prob. 2CCCh. 2.2 - A nitrogen atom has 7 protons and the most common...Ch. 2.2 - Prob. 2CCCh. 2.2 - Prob. 3CCCh. 2.3 - Why does the structure HCCH fail to make sense...Ch. 2.3 - What holds the atoms together in a crystal of...Ch. 2.3 - If you were a phamaceutical researcher, why would...Ch. 2.4 - Which type of chemical reaction occurs faster at...Ch. 2.4 - Write an equation that uses the products of...
Ch. 2.5 - Prob. 1CCCh. 2.5 - How can the freezing of water crack boulders?Ch. 2.5 - Compared with a basic solution at pH 9, the same...Ch. 2.5 - What would be the effect on the properties of the...Ch. 2.5 - Prob. 5CCCh. 2 - The reactivity of an atom arises from A. the...Ch. 2 - Which of the following statements correctly...Ch. 2 - Many mammals control their body temperature by...Ch. 2 - We can be sure that a mole of table sugar and a...Ch. 2 - Measurements show that the pH of a particular lake...Ch. 2 - Prob. 6TYUCh. 2 - What coefficients must be placed in the following...Ch. 2 - A Slice of pizza has 500 kcal. If we could burn...Ch. 2 - Draw the hydration shells that from around a...Ch. 2 - What do climate change (see Concept 1.1) and ocean...Ch. 2 - SCIENTIFIC INQUIRY Female luna moths (Actias luna)...Ch. 2 - FOCUS ON EVOLUTION The percentage of naturally...Ch. 2 - FOCUS ON ORGANIZATION Several emergent properties...Ch. 2 - SYNTHESIZE YOUR KNOWLEDGE How do cats drink?...
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