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Question
Biology
Posted 2 months ago

two drugs are injected intot he same thigh muscle. Drug A is body temperature (37 C) and has a molecular weight of 150 g/mol150 \mathrm{~g} / \mathrm{mol}. Drug B has been in the refridgerator (5 C) and has a molecular weight of 600 g/mol600 \mathrm{~g} / \mathrm{mol}. Predict which drug will diffuse into the blood more rapidly. Explain your reasoning.
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Answer from Sia
Posted 2 months ago
Answer
Drug A will diffuse into the blood more rapidly.
Solution
a
Temperature: Drug A is at body temperature (37°C), while Drug B is refrigerated (5°C). Higher temperatures increase the kinetic energy of molecules, leading to faster diffusion rates
b
Molecular Weight: Drug A has a molecular weight of 150 g/mol150 \mathrm{~g} / \mathrm{mol}, whereas Drug B has a molecular weight of 600 g/mol600 \mathrm{~g} / \mathrm{mol}. Lower molecular weight allows for faster diffusion through tissues
Key Concept
Diffusion Rate
Explanation
Drug A, being at a higher temperature and having a lower molecular weight, will diffuse more rapidly into the blood compared to Drug B. Higher temperature increases molecular movement, and lower molecular weight facilitates easier passage through the muscle tissue.

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