BIOCHEMISTRY (LOOSELEAF) >CUSTOM PKG<
8th Edition
ISBN: 9781305760738
Author: Campbell
Publisher: CENGAGE C
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 11RE
REFLECT AND APPLY Why is the development of catalysis important to the development of life?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Example 1:
1. Suppose an enzyme (MW = 5,000 g/mole) has a concentration of 0.05 mg/L. If the
kcat is 1 x 10 s, what is the theoretical maximum reaction velocity for the
enzyme?
A) 1050 µM/s.
B) 100 µM/s.
C) 150 μM/s.
D) 105 μM/s.
In 1956, E. P. Kennedy and S. B. Weiss published their study of membrane lipid phosphatidylcholine (lecithin) synthesis in rat
liver. Their hypothesis was that phosphocholine joined with some cellular component to yield lecithin. In an earlier experiment,
incubating 32 P-labeled phosphocholine at physiological temperature (37 °C) with broken cells from rat liver yielded labeled
lecithin. This became their assay for the enzymes involved in lecithin synthesis.
Determine the optimal pH for this enzyme and characterize the enzyme activity at different pH values.
-O-P-O-CH2-CH₁₂-N(CH3)3
Phosphocholine
H₂C-O-C-R
HC-O-C-R2
+
+
+
Cell fraction + ?
HC-O-P-O-CH₁₂-CH₂-N(CH),
O
Phosphatidylcholine
The researchers then centrifuged the broken cell preparation
to separate the membranes from the soluble proteins. They
tested three preparations: whole extract, membranes, and
soluble proteins. Table 1 summarizes the results.
Table 1: Cell fraction requirement for incorporation of
32p-phosphocholine into…
Researchers isolated an unknown substance, X, from rabbit muscle. They determined its structure from the following
observations and experiments.
(a) Qualitative analysis showed that X was composed entirely of C, H, and O. A weighed sample of X was completely oxidized
and the H2O and CO2 produced were measured. This quantitative analysis revealed that X contained 40.00% C, 6.71% H, and
53.29% O by weight.
(b) The molecular mass of X, as determined by mass spectrometry, was 90.00 atomic mass units (u).
(c) Infrared spectroscopy showed that X contained one double bond.
(d) X dissolved readily in water, and the solution demonstrated optical activity when tested in a polarimeter.
(e) The aqueous solution of X is acidic.
What is the empirical formula of X?
Chapter 1 Solutions
BIOCHEMISTRY (LOOSELEAF) >CUSTOM PKG<
Ch. 1 - RECALL State why the following terms are important...Ch. 1 - RECALL Match each entry in Column a with one in...Ch. 1 - RECALL Identify the functional groups in the...Ch. 1 - REFLECT AND APPLY In 1828, Wohler was the first...Ch. 1 - REFLECT AND APPLY A friend who is enthusiastic...Ch. 1 - REFLECT AND APPLY Does biochemistry differ from...Ch. 1 - REFLECT AND APPLY An earlier mission to Mars...Ch. 1 - REFLECT AND APPLY Common proteins are polymers of...Ch. 1 - REFLECT AND APPLY Nucleic acids are polymers of...Ch. 1 - REFLECT AND APPLY RNA is often characterized as...
Ch. 1 - REFLECT AND APPLY Why is the development of...Ch. 1 - REFLECT AND APPLY What are two major advantages of...Ch. 1 - REFLECT AND APPLY Why was the development of a...Ch. 1 - REFLECT AND APPLY Comment on RNAs role in...Ch. 1 - REFLECT AND APPLY Do you consider it a reasonable...Ch. 1 - RECALL List five differences between prokaryotes...Ch. 1 - RECALL Do the sites of protein synthesis differ in...Ch. 1 - REFLECT AND APPLY Assume that a scientist claims...Ch. 1 - RECALL Draw an idealized animal cell, and identify...Ch. 1 - RECALL Draw an idealized plant cell, and identify...Ch. 1 - RECALL What are the differences between the...Ch. 1 - RECALL Which organelles are surrounded by a double...Ch. 1 - RECALL Which organelles contain DNA?Ch. 1 - RECALL Which organelles are the sites of...Ch. 1 - RECALL State how the following organelles differ...Ch. 1 - RECALL List the five kingdoms into which living...Ch. 1 - RECALL Which of the five kingdoms consist of...Ch. 1 - RECALL How does the five-kingdom classification...Ch. 1 - REFLECT AND APPLY What are the advantages of being...Ch. 1 - REFLECT AND APPLY Mitochondria and chloroplasts...Ch. 1 - REFLECT AND APPLY Fossil evidence indicates that...Ch. 1 - RECALL Which processes are favored: those that...Ch. 1 - RECALL Does the thermodynamic term spontaneous...Ch. 1 - BIOCHEMICAL CONNECTIONS For the process...Ch. 1 - RECALL Which of the following are spontaneous...Ch. 1 - REFLECT AND APPLY In which of the following...Ch. 1 - REFLECT AND APPLY Why is it necessary to specify...Ch. 1 - REFLECT AND APPLY Why is the entropy of a system...Ch. 1 - REFLECT AND APPLY A reaction at 23C has G=1kJmol1....Ch. 1 - REFLECT AND APPLY Urea dissolves very readily in...Ch. 1 - REFLECT AND APPLY Would you expect the reaction...Ch. 1 - REFLECT AND APPLY The existence of organelles in...Ch. 1 - REFLECT AND APPLY Why is it advantageous for a...Ch. 1 - REFLECT AND APPLY Which would you expect to have a...Ch. 1 - REFLECT AND APPLY How would you modify your answer...Ch. 1 - REFLECT AND APPLY Would it be more or less likely...Ch. 1 - REFLECT AND APPLY What thermodynamic...Ch. 1 - REFLECT AND APPLY If cells of the kind we know...Ch. 1 - REFLECT AND APPLY The process of protein folding...Ch. 1 - REFLECT AND APPLY In biochemistry, the exergonic...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biochemistry and related others by exploring similar questions and additional content below.Similar questions
- Show work. don't give Ai generated solution....give correct solutionarrow_forwardBiochemistry What is the process of "transamination" in either the muscles or the liver, that involves keto acid or glutamic acid? Please explain how the steps work. Thank you!arrow_forwardBiochemistry Please help. Thank you What is the importance of glutamic acid in the metabolism of nitrogen from amino acids? (we know therole; it’s used to remove the nitrogen from amino acids so that the remaining carbon skeleton can bebroken down by the “usual” pathways, but what is the important, unique role that only glutamicacid/glutamate can do?)arrow_forward
- Biochemistry Please help. Thank you When carbamyl phosphate is joined to L-ornathine, where does the energy for the reaction come from?arrow_forwardBiochemistry Question Please help. Thank you What is the function of glutamate dehydrogenase?arrow_forwardBiochemistry Question Please help. Thank you How and why does a high protein diet affect the enzymes of the urea cycle?arrow_forward
- Biochemistry What is the importance of the glucose-alanine cycle?arrow_forwardBiochemistry Assuming 2.5 molecules of ATP per oxidation of NADH/(H+) and 1.5molecules of ATP per oxidation of FADH2, how many ATP are produced per molecule of pyruvate? Please help. Thank youarrow_forward1. How would you explain the term ‘good food’? 2. How would you define Nutrition? 3. Nutrients are generally categorised into two forms. Discuss.arrow_forward
- Biochemistry Question. Please help solve. Thank you! Based upon knowledge of oxidation of bioorganic compounds and howmuch energy is released during their oxidation, rank the following, from most to least, with respect to how much energy would be produced from each during their oxidation. Explain your placement for each one.arrow_forwardBiochemistry Question.For the metabolism of amino acids what is the first step for theirbreakdown? Why is it necessary for this breakdown product to be transported to the liver? For the catabolism of the carbon backbone of these amino acids, there are 7 entry points into the “standard” metabolic pathways. List these 7 entry points and which amino acids are metabolized to these entry points. Please help. Thank you!arrow_forwardBiochemistry Question. Please help. Thank you. You are studying pyruvate utilization in mammals for ATP production under aerobic conditions and have synthesized pyruvate with Carbon #1 labelled with radioactive C14. After only one complete cycle of the TCA cycle, which of the TCA cycle intermediates would be labeled with C14? Explain your answer. Interestingly, you find C14 being excreted in the urine. How does it get there?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning
Biochemistry
Biochemistry
ISBN:9781305961135
Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:Cengage Learning
Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY