Alex has had diarrhea for a few days; he is told by the doctor that he has Salmonella. In an effort to uncover the source of his ailment, Alex recounts all the steps of his food preparation. He blames the chicken for his ailment. Which of the following steps most likely caused his food poisoning? (Select all that apply)
A. He left the chicken on the counter for 20 minutes before cooking it.
B. He rinsed the raw chicken in the sink after taking it out of the packaging.
C. He cut the raw chicken on a clean cutting board.
D. He put the chicken in the oven. Two hours later he noted that it still wasn’t cooked and realized that he had accidentally set the temperature to 120o Fahrenheit (50o Celsius) instead of 120o Celsius (250o Fahrenheit).
E. Realizing his error he increased the temperature to 175o Celsius (350o Fahrenheit).
F. He took the chicken out of the oven and cut it with the same board cutting board and knife he used earlier.
G. He allowed it to cool for 15 minutes at room temperature before putting it in the fridge.
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A scientist named Monty Santos introduces a new type of potato (called a ‘Montato’) that is highly resistant to an herbicide known as glyphosate. It was developed by introducing one gene from a species of avocado into the genome of the potato plant. Which of the following results are risks that might be associated with this crop? (Select all that apply)
A. The inserted gene may introduce potential allergens into the Montatoes.
B. The Montatoes will taste like avocadoes, not potatoes.
C. The Montatoes may spread into the wild and replace other varieties of potato.
D. The Montatoes will look like avocadoes, not potatoes.
E. The Montatoes will offer more calories in the form of fat than carbohydrates.
A chemist is trying to develop a new pesticide. What features might the scientist be looking for? (Select all that apply)
A substance with a low toxicity to all plants and animals.
B. A substance that acts on an enzyme in insects not found in humans.
C. A substance that accumulates in the fat stores of animals.
D. A substance that will break down in the environment.
E. A substance that builds up in the food chain.
The safety of pesticide use in agricultural settings and at a household level is a serious concern. What are the potential risks associated with pesticides? (Select all that apply)
A. Pesticides may interfere with human endocrine (hormonal) functions.
B. The chemicals in pesticides may be passed on from one generation of plants to the next.
C. Pesticides can have both acute and chronic toxicology profiles that cause health problems.
D. Overuse will promote artificial selection of resistant pests (insects or weeds) which results in the need for higher concentrations or more frequent application of pesticides.
Food additives are used for various purposes including enhancing the flavour of a product. Which of the following statements are characteristics of monosodium glutamate (MSG)? (Select all that apply)
A. It is used to glue meat pieces together.
B. It is a salt of an amino acid.
C. It is responsible for the 6th taste (Kokumi).
D. It can be produced by bacteria.
E. It can be produced from seaweed.
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