Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Question
Chapter 3, Problem 15P
Interpretation Introduction
Interpretation:
The reason for the increase in the total activity to a value more than that is present in the original crude extract during purification of an enzyme should be determined.
Concept introduction:
A peptide bond is present between the two amino acids in a protein. During the formation of a peptide bond, a molecule of water is released. The amino group of an amino acid gets associated with the carboxyl group of another. Polypeptides and proteins are the chains formed by the amino acids.
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MULTIPLE CHOICE
- Please answer properly
QUESTION :
Enzymes can be regulated in a many different ways.
Covalent modification is one way. Here, the functional
groups are attached to or removed from the enzyme. A
phosphate group is an example of a functional group
that can be added to an enzyme. Depending on the
enzyme, addition of a phosphate group can either
increase or decrease an enzyme's activity. Evaluate the
following names and identify the general name of an
enzyme that functions to add phosphate groups to its
substrate?
A. isomerase
B. phosphatase
C. kinase
D. ligase
Question #1: Choanoflagelletes are a unicellular ancestor to animals. One observation to support
this hypothesis is the appearance of adhesion molecules that are key to the development of
multiceullarity.
Bulk transport
Gap junctions
Animals.
Adhesion, cell
signaling
Single-celled
:}
Insects, mammals, and other animals
with bilateral symmetry (~10,000,000)
Jellyfish and their relatives (10,000)
} Sponges (10,000)
Choanoflagellates (150)
Despite their simple unicellular lifestyle they express adhesion molecules including cadherins
and lectins (King et al., 2003) but don't seem to have molecules that are typically found in the
extracellular matrix such as integrins or laminins (Williams et al., 2014).
Design a microscopy experiment to test the assertion that choanoflagellates have (some)
adhesion molecules and those molecules play a similar role in a closely related animal like
sponges.
Help?
Please explain salting out in protein purification.
Chapter 3 Solutions
Biochemistry
Ch. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10P
Ch. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Prob. 25PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 30PCh. 3 - Prob. 31P
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