Biology Topic Practice

Lifestyle and Risk Factors

The incidence of non-communicable diseases is affected by lifestyle factors and environmental substances.

Do you know the difference between a risk factor and a cause?

What is Lifestyle and Risk Factors?

"A risk factor is any attribute, characteristic or exposure of an individual that increases the likelihood of developing a non-communicable disease."

Question 1

Which answer best completes the statement? ____ tissue is made of hollow tubes that transport water

Question 2

A student thinks that stents are used to thin the blood. Why is this incorrect?

Question 3

Choose the correct option to complete the statement. Enzymes have an ____ that fits a specific substrate

Question 4

Which answer best completes the statement? Proteases break down proteins into ____

Risk Factors and Disease

Risk factors: Aspects of a person's lifestyle or substances in the body/environment.

Causal mechanism: A proven link between a risk factor and a disease (e.g. smoking and lung cancer).

Impact: These diseases have a significant human and financial cost locally and globally.

Interaction: Different factors often interact to increase overall risk.

Exam Tip

A correlation between a factor and a disease does not always mean it is the cause.

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