In: Biology
Answer the following questions regarding to the second step of Citric acid cycle (isomerization of citrate to isocitrate)
1. how does the second step of CAC fits into the larger metabolic pathway? overall outcome?
2. enzymes involved. Also categorize the type of the enzyme. explain!
3. Thermodynamics? endergonic or exergonic? if any differences between standard state and actual free energy.
4. regulations?
In: Biology
Following information is from the instruction of Q5 DNA polymerase: One unit of enzyme will incorporate 10 nmol of dNTP into acid insoluble material in 30 minutes at 74°C. The temperature of denaturing should be ( ) and the temperature of extension should be ( )
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94℃ to 98℃ for both. |
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94℃ to 98℃ for denaturing, 74℃ for extension. |
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72℃ for denaturing, 50℃ to 65℃ for extension. |
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94℃ to 98℃ for denaturing, 50℃ to 65℃ for extension. |
In: Biology
True or False?
Enzymes are totally consumed in a chemical reaction.
Glucose is a universal food molecule for most organisms.
Anabolic reactions release energy.
Endomthermic reactions release energy.
Catabolic reactions result in the formation of complex
molecules.
Starch is used as a building block of complex molecules by
microbes.
Phospholipids are a major food molecule to produce energy.
An enzyme accelerates the chemical transformation of specific
substrates.
In: Biology
Aspartate transcarbamoylase (ATCase) catalyzes the first step in the biosynthesis of a nucleotide. The end product of the pathway, cytidine 5’-triphosphate (CTP), in turn inhibits ATCase activity. This effect can be overcome by the addition of ATP.
a) Sketch the enzyme activity curve of ATCase alone, ATCase + CTP, & ATCase + ATP. Explain your rationale.
b) The regulation of ATCase activity by CTP exemplifies what TWO types of regulation?
In: Chemistry
Choose correct answers: Which of the following are true of insulin receptors?
Question 5 options:
|
A |
found on muscle cells |
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B |
found predominately on beta cells |
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C |
bind insulin and change shape |
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D |
allow insulin to enter the cell |
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E |
Enzyme linked receptor (RTK) |
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F |
G protein coupled receptor |
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G |
only perform one function in response to ligand binding |
In: Biology
There’s a class of drugs used to treat high blood pressure known as ACE-Inhibitors. As you might guess from the name, these drugs work by inhibiting the enzyme ACE.
a. Explain in detail how an ACE-inhibitor would work to lower blood pressure. (5 points)
b. What effect will ACE-inhibitors have on the
volume of urine produced? Explain why. (3 points)
In: Anatomy and Physiology
A vaccine for Coronavirus is likely to take a longer time than imagined, because the most obvious target of the vaccine should be the external spike protein on the envelope of this enveloped virus. The cellular attachment protein on epithelial cells, which the virus binds to for entry into the epithelial cell, is known to be ACE2, a receptor enzyme. Explain why the production of a vaccine targeting the coronavirus spike protein (S1), is not likely to be successful.
In: Anatomy and Physiology
Is there currently a surplus or shortage of human organs available for transplant? Using the demand/supply framework, explain how legalizing the trade for human organs will help move the market towards an equilibrium. Explain without drawing a graph.
In: Economics
It is worthwhile planning human resources even if you
have no strategy”.
(a) For what reasons might you agree or disagree with this
statement?
(b) Examine any five (5) challenges associated with human resource
planning in organisations.
In: Nursing