BIOCHEMISTRY (LOOSELEAF) >CUSTOM PKG<
8th Edition
ISBN: 9781305760738
Author: Campbell
Publisher: CENGAGE C
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Chapter 7, Problem 61RE
Interpretation Introduction
Interpretation:
The role of coenzymes based on the reaction mechanisms is to be discussed.
Concept Information:
Coenzymes are non-proteinaceous substances that take part in an enzymatic reaction and get regenerated at the end of the same.
Examples of coenzymes are biotin, flavin coenzymes, lipoic acid and nicotinamide adenine coenzymes. These have various vitamin precursors, such as coenzyme A (cofactor).
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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 7 Solutions
BIOCHEMISTRY (LOOSELEAF) >CUSTOM PKG<
Ch. 7 - RECALL What features distinguish enzymes that...Ch. 7 - RECALL What is the metabolic role of aspartate...Ch. 7 - RECALL What molecule acts as a positive effector...Ch. 7 - RECALL Is the term KM used with allosteric...Ch. 7 - Prob. 5RECh. 7 - Prob. 6RECh. 7 - RECALL What is a homotropic effect? What is a...Ch. 7 - RECALL What is the structure of ATCase?Ch. 7 - RECALL How is the cooperative behavior of...Ch. 7 - RECALL Does the behavior of allosteric enzymes...
Ch. 7 - RECALL Does the behavior of allosteric enzymes...Ch. 7 - RECALL Explain what is meant by K0.5.Ch. 7 - REFLECT AND APPLY Explain the experiment used to...Ch. 7 - RECALL Distinguish between the concerted and...Ch. 7 - RECALL Which allosteric model can explain negative...Ch. 7 - RECALL With the concerted model, what conditions...Ch. 7 - Prob. 17RECh. 7 - Prob. 18RECh. 7 - Prob. 19RECh. 7 - Prob. 20RECh. 7 - Prob. 21RECh. 7 - BIOCHEMICAL CONNECTIONS How does Valium work?Ch. 7 - Prob. 23RECh. 7 - Prob. 24RECh. 7 - RECALL What is the function of a protein kinase?Ch. 7 - RECALL What amino acids are often phosphorylated...Ch. 7 - REFLECT AND APPLY What are some possible...Ch. 7 - REFLECT AND APPLY Explain how phosphorylation is...Ch. 7 - REFLECT AND APPLY Explain how glycogen...Ch. 7 - Prob. 30RECh. 7 - Prob. 31RECh. 7 - RECALL Name three proteins that are subject to the...Ch. 7 - Prob. 33RECh. 7 - RECALL What are caspases?Ch. 7 - REFLECT AND APPLY Explain why cleavage of the bond...Ch. 7 - REFLECT AND APPLY Why is it necessary or...Ch. 7 - Prob. 37RECh. 7 - Prob. 38RECh. 7 - Prob. 39RECh. 7 - RECALL What are the two essential amino acids in...Ch. 7 - RECALL Why does the enzyme reaction for...Ch. 7 - REFLECT AND APPLY Briefly describe the role of...Ch. 7 - REFLECT AND APPLY Explain the function of...Ch. 7 - REFLECT AND APPLY Explain why the second phase of...Ch. 7 - Prob. 45RECh. 7 - REFLECT AND APPLY An inhibitor that specifically...Ch. 7 - REFLECT AND APPLY What properties of metal ions...Ch. 7 - RECALL In biochemistry mechanisms, what group is...Ch. 7 - Prob. 49RECh. 7 - REFLECT AND APPLY Explain the difference between...Ch. 7 - Prob. 51RECh. 7 - Prob. 52RECh. 7 - Prob. 53RECh. 7 - REFLECT AND APPLY What is the relationship between...Ch. 7 - Prob. 55RECh. 7 - BIOCHEMICAL CONNECTIONS Why can cocaine addiction...Ch. 7 - Prob. 57RECh. 7 - Prob. 58RECh. 7 - RECALL How are coenzymes related to vitamins?Ch. 7 - RECALL What type of reaction uses vitamin B6?Ch. 7 - Prob. 61RECh. 7 - Prob. 62RECh. 7 - Prob. 63RECh. 7 - BIOCHEMICAL CONNECTIONS What are some of the ways...
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