1.
What scientific field is concerned with food poisoning?
Correct Answer
B. Toxicology
Explanation
Toxicology is the scientific field that is concerned with food poisoning. It involves the study of toxins and their effects on living organisms, including the study of how toxins in food can cause illness or poisoning. By understanding the toxic properties of various substances, toxicologists can help identify and prevent foodborne illnesses, develop treatments for poisoning cases, and establish safety regulations for food production and handling.
2.
Which of these is not a poison to humans?
Correct Answer
B. Oxygen
Explanation
Oxygen is not a poison to humans because it is an essential element for respiration. It is necessary for the survival of all living organisms, including humans. Oxygen is required for the process of cellular respiration, where it is used to produce energy in the form of ATP. In contrast, tin, mercury, and lead are all toxic to humans and can cause various health problems when ingested or exposed to in high amounts.
3.
Which of these is a poison found in cassava?
Correct Answer
C. Cyanide
Explanation
Cyanide is a poison found in cassava. Cassava contains naturally occurring compounds called cyanogenic glycosides, which can release cyanide when consumed. Cyanide is a highly toxic substance that can cause serious health problems or even be fatal if ingested in large amounts. Therefore, it is important to properly process and cook cassava to remove the cyanide and make it safe for consumption.
4.
Which of these food crops does not contain natural poisons?
Correct Answer
C. Okra
Explanation
Okra is the correct answer because it is a food crop that does not contain natural poisons. Sorghum, almonds, and cassava all contain natural poisons. Sorghum contains cyanide, almonds contain a small amount of cyanide in their skins, and cassava contains cyanide in its roots. However, okra does not contain any natural poisons and is safe for consumption.
5.
What organ is most concerned with food poisoning in the human body?
Correct Answer
A. Liver
Explanation
The liver is the organ most concerned with food poisoning in the human body. It plays a crucial role in detoxifying harmful substances, including toxins and bacteria that can cause food poisoning. The liver filters the blood and removes toxins, helping to protect the body from the harmful effects of foodborne pathogens. Additionally, the liver produces bile, which aids in the digestion and absorption of fats, further assisting in the elimination of harmful substances from the body.
6.
What contaminates fishes that contain ciguatoxins?
Correct Answer
C. Dinoflagellates
Explanation
Dinoflagellates are responsible for contaminating fishes that contain ciguatoxins. Ciguatoxins are toxins produced by certain species of dinoflagellates, which are microscopic marine organisms. These toxins accumulate in the tissues of fishes that consume the dinoflagellates, particularly in tropical and subtropical regions. When humans consume contaminated fish, ciguatera poisoning can occur, causing symptoms such as nausea, vomiting, diarrhea, and neurological effects. Therefore, the presence of dinoflagellates in the marine environment is a crucial factor in the contamination of fishes with ciguatoxins.
7.
Which of these is not a symptom of food poisoning?
Correct Answer
B. Migraine
Explanation
Migraine is not a symptom of food poisoning. Food poisoning typically causes symptoms such as fever, watery diarrhea, and vomiting. Migraine, on the other hand, is a neurological condition characterized by severe headaches, often accompanied by sensitivity to light and sound. While food poisoning can cause headaches in some cases, it is not the same as a migraine. Therefore, migraine is not considered a symptom of food poisoning.
8.
Which of these is not a symptom of ciguatera poisoning?
Correct Answer
D. Migraine
Explanation
Migraine is not a symptom of ciguatera poisoning. Ciguatera poisoning is caused by consuming fish that contain ciguatoxins, which are produced by certain types of marine algae. Symptoms of ciguatera poisoning include tingling sensation on fingers and toes, as well as vomiting. However, migraine, which is a severe headache often accompanied by other symptoms such as sensitivity to light and sound, is not typically associated with ciguatera poisoning.
9.
Which of these fishes does not contain ciguatera poison?
Correct Answer
D. Tilapia
Explanation
Tilapia does not contain ciguatera poison. Ciguatera poisoning is caused by consuming certain types of fish that have accumulated toxins produced by marine microalgae. While Dog snapper, King mackerel, and Barracuda are known to carry ciguatera poison, Tilapia is not associated with this toxin. Therefore, it is safe to consume Tilapia without the risk of ciguatera poisoning.
10.
Which of these is not a phytotoxin?
Correct Answer
D. Botulinum
Explanation
Botulinum is not a phytotoxin because it is a neurotoxin produced by the bacteria Clostridium botulinum. Phytotoxins are toxins produced by plants that are harmful to other organisms. Ciguatera, lathyrogens, and cyanogenic glycosides are all examples of phytotoxins. Ciguatera is a toxin found in certain types of fish, lathyrogens are toxins found in certain legumes, and cyanogenic glycosides are toxins found in certain plants that release hydrogen cyanide when ingested.