Please can you explain how to do the following:
a) a non-smoker with low blood pressure has a plasma chloesterol concentration of 5mmol per litre. Over a period of time this concentration increases to 8mmol per litre. By how many times has this risk of heart disease increased? Show your working.
b) Two non-smoking men with low blood pressure both have plasma chloesterol concentrations of 5mmol per litre. One of them starts to smoke and the plasma chloesterol concentration of the other increases to 7mmol per litre. Which man is now at the greater risk of heart disease? Explain your answer.
Many thanks
I have changed the subject to maths and science now not biology as my previous post at 2.38pm.
hi PETER, In the first question you didn't say anything about how the risk is measured,and at what level of plasma chloesterol concentration the risk starts with .
and in the second one , how many times that person smokes per day , and how it is effective on the risk
i think this question doesn't have adequate information
by
muthu
vrmuth at gmailcom
this is the only information we have been given. hope someone can help.
a) To determine how many times the risk of heart disease has increased, we need to compare the initial and final cholesterol concentrations.
Initial concentration: 5 mmol/L
Final concentration: 8 mmol/L
To find the factor by which the concentration has increased, divide the final concentration by the initial concentration:
Increase factor = Final concentration / Initial concentration
= 8 mmol/L / 5 mmol/L
= 1.6
Therefore, the risk of heart disease has increased by 1.6 times.
b) To determine which man is at a greater risk of heart disease, we compare their cholesterol concentrations.
First man (non-smoker): Plasma cholesterol concentration = 5 mmol/L
Second man (smoker): Plasma cholesterol concentration = 7 mmol/L
Since the concentration of the first man remained the same, and the second man's concentration increased, we can conclude that the second man (who started smoking) is now at a greater risk of heart disease. Smoking is known to increase cholesterol levels, which increases the risk of heart disease.