Mock LET Exam

Which part of the brain is responsible for memory and intelligence?

• cerebellum

• cerebrum

• medulla oblongata

• thalamus

In a flame test, the presence of boron in a solution is evident by what color of flame?

• Bright green

• Brick red

• Gold

• Lilac

Children in upland places are found to be affected by enlarged goiter. Which of these situations may heal this group of children?

• Add iron to diet

• Add iodized salt to diet

• Expose the children toultraviolet rays

• Add iodine drops to diet

Which blood transfusion would agglutinate blood?

• A donor to A recipient

• A donor to O recipient

• A donor to AB recipient

• O donor to AB recipient

Which of the following is the main function of the mitochondria in animal cells?

• Protein synthesis

• Energy production

• Cell division

• Storage of genetic material

Which process explains why a glass of cold water eventually "sweats" on a humid day?

• Condensation

• Evaporation

• Sublimation

• Precipitation

Which of the following best explains why we see lightning before we hear thunder?

• Thunder travels faster than lightning

• Light travels faster than sound

• Lightning lasts longer than thunder

• Sound is absorbed more easily than light

Mark divides his day into leisure, sleep and work in the ratio 1:2:3. How many hours does he spend for work?

• 4 hours

• 8 hours

• 10 hours

• 12 hours

If today is Saturday, what day is 154 days from now?

• Thursday

• Friday

• Saturday

• Sunday

If the ratio of women to men in a meeting is 4 to 1, what percent of the persons in the meeting are men?

• 20%

• 25%

• 33%

• 80%