MRC Prac Science- Food

What are the building blocks of proteins?

• Amino Acids

• Fatty Acids

• Nucleotides

• Lipids

Bread is a product of fermentation that contains bubbles. These bubbles come from:

• Water

• Oxygen

• Carbon Dioxide

• Lactic Acid

Sugar in the bloodstream is referred to as________

• Amino Acids

• Glucose

• Fructose

• Glycogen

Which of the elements in the list are NOT macronutrients?

• Protein

• Fats

• Vitamins

• Carbohydrates

Where do we find carbohydrates?

• in animal fats, industrial sauces, sweets, precooked food...

• in starchy vegetables, cereals, grains, rice, bread...

• in beef, poultry, fish, eggs, dairy products, beans...

• mainly in most fruits and vegetables

What is a substance called if it speeds up a chemical reaction?

• Catalyst

• Specific

• Optimal

• Substrate

The graph shows how enzymes affect reactions in cells. Which statement best summarises the information shown in the graph?

• Enzymes decrease the energy level of the products.

• Enzymes increase the energy of the reactants.

• Enzyme decrease the activation energy of the reaction.

• Enzymes reverse the direction of the reaction.

What happens when enzymes are heated to a high temperature?

• The enzymes die.

• The shapes of the enzyme are altered denature

• The enzymes' amino acid sequence changes.

• The enzymes remain the same

What best describes what occurs here

• nutrients are absorbed

• water and salts are reclaimed

• waste is excreted

• most mechanical digestion

Where does the digestion of starch begin?

• Small Intestine

• Mouth

• Stomach

• Liver