Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
8th Edition
ISBN: 9780135213759
Author: John McMurry, David Ballantine
Publisher: PEARSON+
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Question
Chapter 28, Problem 28.82AP
Interpretation Introduction
Interpretation:
The advantage for an animal to produce its own pain-suppressing molecules has to be explained.
Concept Introduction:
- Pain suppressing molecules: Pain suppressing molecules are hormones which are released when the body experiences unbearable pain and these molecules help to reduce the pain.
- Suppressing the pain helps the prey to escape from the predator even when they are injured
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At a pH equal to the isoelectric point (pl) of alanine, the net charge of alanine is zero. Two structures can be drawn that have a
net charge of zero, but the predominant form of alanine at its pl is zwitterionic.
CH3
H,N
CH3
**
H¸N-C
H
Zwitterionic
H
Uncharged
OH
Select statements that explain why alanine is predominantly zwitterionic at its pl.
pk of alanine's amino group is more than its pl.
pk of alanine's carboxyl group is more than its pl.
PK of alanine's carboxyl group is less than its pl.
pk of alanine's amino group is less than its pl.
Correct Answer
What fraction of alanine is in the completely uncharged form at its pl?
1 in 2.2 × 107
1 in 1.6 × 10²
1 in 4680
1 in 9460
How does a voltage-gated sodium channel work? Specifically, how and why does a change in voltage trigger their opening? Please be detailed
When sodium ions enter a neuron during depolarization, they trigger the opening of additional voltage-gated sodium channels nearby, creating a positive feedback loop where the influx of sodium ions further depolarizes the membrane, causing even more sodium channels to open and allowing more sodium ions to enter the cell, thus sustaining the depolarization process until the action potential peaks. But how and why exactly does the influx of sodium ions trigger more sodium channels to let in more sodium? Please explain
Chapter 28 Solutions
Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
Ch. 28.1 - While thinking about how a messenger molecule and...Ch. 28.2 - Prob. 28.2PCh. 28.2 - Prob. 28.3PCh. 28.2 - Prob. 28.4PCh. 28.3 - Prob. 28.5PCh. 28.3 - Prob. 28.6KCPCh. 28.4 - Prob. 28.7PCh. 28.4 - Look at the structure of thyroxine shown earlier...Ch. 28.4 - Prob. 28.1CIAPCh. 28.4 - Prob. 28.2CIAP
Ch. 28.4 - Prob. 28.9PCh. 28.5 - Prob. 25.10PCh. 28.6 - Prob. 28.11PCh. 28.6 - Prob. 28.12PCh. 28.6 - Prob. 28.13KCPCh. 28.7 - Identify the functional groups present in THC. Is...Ch. 28.7 - Prob. 28.15KCPCh. 28 - Prob. 28.16UKCCh. 28 - Prob. 28.17UKCCh. 28 - Prob. 28.18UKCCh. 28 - Prob. 28.19UKCCh. 28 - Prob. 28.20UKCCh. 28 - Prob. 28.21UKCCh. 28 - Prob. 28.22APCh. 28 - Prob. 28.23APCh. 28 - Prob. 28.24APCh. 28 - Prob. 28.25APCh. 28 - Prob. 28.26APCh. 28 - Prob. 28.27APCh. 28 - Prob. 28.28APCh. 28 - Prob. 28.29APCh. 28 - Prob. 28.30APCh. 28 - Prob. 28.31APCh. 28 - Prob. 28.32APCh. 28 - Prob. 28.34APCh. 28 - Prob. 28.35APCh. 28 - Prob. 28.36APCh. 28 - Prob. 28.37APCh. 28 - How does epinephrine reach its target tissues?Ch. 28 - Prob. 28.39APCh. 28 - Prob. 28.40APCh. 28 - Prob. 28.41APCh. 28 - Prob. 28.42APCh. 28 - What enzyme catalyzes hydrolysis of the second...Ch. 28 - Prob. 28.44APCh. 28 - Prob. 28.45APCh. 28 - Prob. 28.46APCh. 28 - Prob. 28.47APCh. 28 - Prob. 28.48APCh. 28 - Prob. 28.49APCh. 28 - Prob. 28.50APCh. 28 - Prob. 28.51APCh. 28 - Prob. 28.52APCh. 28 - Prob. 28.53APCh. 28 - Prob. 28.54APCh. 28 - Prob. 28.55APCh. 28 - Prob. 28.56APCh. 28 - Prob. 28.57APCh. 28 - Prob. 28.58APCh. 28 - Prob. 28.59APCh. 28 - Prob. 28.60APCh. 28 - Prob. 28.62APCh. 28 - Prob. 28.63APCh. 28 - Prob. 28.64APCh. 28 - Prob. 28.65APCh. 28 - Prob. 28.66APCh. 28 - Prob. 28.67APCh. 28 - Prob. 28.68APCh. 28 - Prob. 28.69APCh. 28 - Prob. 28.70APCh. 28 - Prob. 28.71APCh. 28 - Prob. 28.72APCh. 28 - Prob. 28.73APCh. 28 - Prob. 28.74APCh. 28 - Prob. 28.75APCh. 28 - Prob. 28.76APCh. 28 - Why do we have brain receptors that respond to...Ch. 28 - Prob. 28.78APCh. 28 - Prob. 28.79APCh. 28 - Prob. 28.80APCh. 28 - Prob. 28.81APCh. 28 - Prob. 28.82APCh. 28 - Prob. 28.83CPCh. 28 - Prob. 28.84CPCh. 28 - Prob. 28.85CPCh. 28 - Prob. 28.86CPCh. 28 - Prob. 28.87CPCh. 28 - Prob. 28.88CPCh. 28 - Prob. 28.89CPCh. 28 - Prob. 28.90CPCh. 28 - Prob. 28.91CPCh. 28 - Prob. 28.92CPCh. 28 - Prob. 28.93CPCh. 28 - Prob. 28.94GPCh. 28 - Prob. 28.95GP
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