Smoking, Diet and Obesity

A risk factor is defined as:

• A characteristic or condition that increases the likelihood of developing a disease or injury.

• A treatment used to cure a disease.

• A symptom of a particular illness.

• A method for preventing all diseases.

Obesity is a risk factor for which of the following diseases?

• Diabetes

• Asthma

• Tuberculosis

• Malaria

Smoking is a risk factor for which of the following diseases?

• Lung cancer

• Diabetes

• Asthma only

• Arthritis

Diffusion is the process by which:

• particles move from an area of high concentration to an area of low concentration

• energy is transferred from one object to another

• liquids change into gases

• solids turn directly into gases

An adaptation of the alveoli that increases the rate of diffusion is:

• a large surface area

• thick walls

• low blood supply

• dry inner surface

The piece of equipment used to measure the volume of a liquid is called:

• Graduated cylinder

• Thermometer

• Balance

• Bunsen burner

A 20ml sample of blood contains 2.5ml of platelets. What percentage of the sample contains platelets?

• 12.5%

• 20%

• 10%

• 25%

Convert 0.000006 into standard form.

• 6 × 10^-6

• 6 × 10^-5

• 6 × 10^-7

• 0.6 × 10^-5

Describe the term risk factor.

• A risk factor is something that could increase someone's chance of getting a disease.

• A risk factor is a type of medicine used to cure diseases.

• A risk factor is a type of exercise to prevent illness.

• A risk factor is a type of food that guarantees good health.

State a disease obesity is a risk factor for.

• Diabetes, cardiovascular disease

• Common cold

• Chickenpox

• Scurvy

• Asthma