Exam (elaborations)
Bio 219 Assignment Questions And Answers Latest Update
- Course
- BIO 219
- Institution
- Purdue University
Bio 219 Assignment Questions And Answers Latest Update
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Bio 219 Assignment QuestionsAnd Answers Latest Update
Which of the following is not true of all cells? Answer: all cells within the
same organism have the same amount of proteins, membranes, and sugars
How many covalent bonds can oxygen form? In other words, what is the valence
of oxygen? Answer: 2
CH3 Answer: methyl
During protein synthesis (and all macromolecule synthesis) ATP/energy is spent to
form which covalent bond? Answer: bond between the monomer and the
carrier
Which is more hydrophobic, glutamate or valine? Answer: valine
The change from glutamate to valine decreases interactions WITHIN the protein
and increases interactions BETWEEN hemoglobin molecules. This causes long
chains of hemoglobin to form, which clog up the cell and force the sickle cell
shape. Which level of protein structure is affected when the hemoglobin
molecules interact together? Answer: quaternary structure
Which of the following changes when an enzyme is added to a reaction? Answer:
activation energy will decrease
, Enzymes can be characterized using MIchaelis-Menten or Lineweaver-Burk plots.
In those models, the Michaelis constant (Km) is a measure of which of the
following? Answer: the binding affinity between enzyme and substrate
During the formation of hemoglobin proteins, condensation reactions occur
between which of the following functional groups? Answer: amine +
carboxcylic acid
in most cases of sickle-cell anemia, where the 6th amino acid (typically glutamate)
is replaced by valine, how would the potential for chemical interactions change?
Answer: valine will form fewer ionic bonds with other side chains
Individuals with sickle-cell anemia are susceptible to bacterial infections. Many
antibiotics work by inhibiting bacterial cell wall synthesis by inhibiting an enzyme
called transpeptidase. During this enzyme reaction, which of the following
represents the point on a Michaelis-Menten curve where the enzymes are not
working at peak efficiency because all enzymes are already bound to substrates?
Answer: Vmax
A patient is given antibiotics to combat their infection. Upon treatment, the Vmax
of transpeptidase decreases with no effect on the Km. What kind of inhibitor is
the antibiotic? Answer: reversible and non-competitive
Blood also carries glucose around the body. Glucose is absorbed in the intestine.
However, the concentration of glucose in the intestine is typically already high.
Glucose is carried into the intestine via the sodium/glucose transporter. This
couples the movement of sodium (spontaneous) with the movement of glucose
(not spontaneous). However, it is often true that the concentration of sodium is
also greater inside the intestine than outside. How can the movement of sodium
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