Questions and Answers
What is the primary mode of heat loss in humans when skin temperature is higher than the environment temperature?
Which amino acid is recognized as the 21st amino acid?
A point mutation in the beta-chain of hemoglobin results in a substitution of which amino acid for glutamate?
A 35-year-old female presents with gross hematuria, elevated blood pressure, and decreased urine output. Which type of collagen fiber is most likely defective in this condition?
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Which glucose transporter is responsible for insulin-stimulated glucose uptake?
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What is the acceptable macronutrient distribution range (AMDR) for simple sugars?
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Study Notes
Heat Loss in Humans
- When skin temperature is greater than the environment temperature, radiation is the major mode of heat loss.
Amino Acids
- Selenocysteine is determined as the 21st amino acid.
Sickle Cell Disease
- Sickle cell disease results from a missense mutation in both genes encoding for the beta-chain, resulting in a change from Glutamate to Valine.
Collagen Fiber Defects
- Defects in Type IV collagen fiber are associated with a condition causing gross hematuria, elevated blood pressure, and decreased urine output, accompanied by bilateral hearing loss and opacification of the lenses.
Glucose Uptake
- Insulin-stimulated glucose uptake involves the GLUT4 transporter.
Macronutrient Distribution
- The acceptable macronutrient distribution range (AMDR) of simple sugars is not specified, but the exact range is an important concept in nutrition.
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Description
Test your knowledge of various biological concepts, including heat loss, amino acids, sickle cell disease, and collagen fiber defects.
