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What is common variable immunodeficiency?
Common variable immunodeficiency is an immunodeficiency disorder characterized by a low level of antibodies. Patients with this disease are subject to recurring infections.
How is scid diagnosed?
SCID is severe combined immunodeficiency disease/disorder and is diagnosed by performing a complete blood count (CBC). The values for all white blood cells will usually be very low to not found. This is genetic and untreatable at this time and will result in the foal's death within the first year of life, and usually in the first month of life, because it has no immune system and can't fight off any bacteria or viruses.
What does it mean when an enzyme has a low value for its Michaelis constant?
It indicates that the enzyme has a high affinity for the substrate.
True or False Low Km means that an enzyme binds very loosely to a substrate andd consequently results in a high velocity compared to an enzyme with a high Km?
False. Low Km actually indicates a strong binding of the enzyme to the substrate, resulting in a high affinity and low velocity at low substrate concentrations. High Km means a weak binding of the enzyme to the substrate and requires higher substrate concentrations for the enzyme to achieve maximum velocity.
How might very low pH affect an enzyme's hydrogen bonds?
A very low pH can break the hydrogen bonds in an enzyme which causes the shape of the enzyme to change shape making the enzyme unable to do it's job. This is called "denaturation" However some enzymes such as pepsin only work in a low pH (pepsin works best in a pH of about 3) so it does depend on the enzyme.
What enzyme is released as a result of low blood pressure?
Renin
What conditions LEAST likely to denature an enzyme?
low temperatures
The enzyme phosphofructokinase is an important enzyme that plays a significant regulatory role in glycolysis. Which of the following conditions would be expected to result in increased activity of this enzyme?
Low levels of ATP
How does temperature change the action of enzymes?
Temperature can affect enzyme activity because enzymes work best within specific temperature ranges. At low temperatures, enzyme activity decreases as the molecules move more slowly, decreasing the likelihood of enzyme-substrate collisions. At high temperatures, enzyme activity can be disrupted because the enzyme structure can become denatured, leading to a loss of function. Optimal temperature for enzyme activity varies depending on the specific enzyme.
would the pH be high or low if you combined a strong base and oil?
it would be low
How does initial concentration of substrate effect enzyme activity?
At low concentration of substrate , rate of enzyme action is directly proportional to conc. of substrate .
What is Low-Ogestrel?
It is a combined emergency contraceptive pill
