Q: Which chemical reaction is primarily responsible for releasing energy from glucose in human cells?

Aerobic respiration: $$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy}$$

Question 1

Which of the following best explains why smoking has a greater economic impact in developing countries compared to developed countries?

Accepted Answer

Poorer smokers in developing countries spend a significant portion of their income on cigarettes instead of necessities like food, healthcare, and education.

Question 2

Which of the following is NOT a reason why humans need food, according to the study materials?

Accepted Answer

To increase the body's water retention

Question 3

A balanced diet must include which of the following groups of food substances?

Accepted Answer

Carbohydrates, lipids, proteins, minerals, vitamins, dietary fibre, and water

Question 4

Which chemical reaction is primarily responsible for releasing energy from glucose in human cells?

Accepted Answer

Aerobic respiration: $$C_6H_{12}O_6$ + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy}$$

Question 5

Which of the following statements about nicotine addiction and quitting smoking is most accurate?

Accepted Answer

Nicotine patches and gum help reduce cravings by providing nicotine without harmful tar, allowing gradual weaning.

Question 6

If a person consumes a diet high in carbohydrates but low in proteins and vitamins, which health issue are they most likely to face?

Accepted Answer

Impaired growth and tissue repair

Question 7

Which of the following is a major source of glucose in the human diet, according to the study materials?

Accepted Answer

Digestion of starch from foods like potatoes, rice, and cereals

Question 8

Why is tobacco farming considered problematic in developing countries?

Accepted Answer

It uses land that could be used for growing food crops.

Question 9

Which of the following best describes the role of carbohydrates in the human body?

Accepted Answer

They are the main fuel for supplying cells with energy.

Question 10

A survey shows that about two-thirds of current smokers would like to stop smoking. Which factor most likely contributes to the difficulty in quitting?

Accepted Answer

The addictive nature of nicotine, which causes withdrawal symptoms.

Question 11

Which of the following is a correct statement about the global distribution of cigarette consumption?

Accepted Answer

Cigarette consumption is increasingly concentrated in the developing world.

Question 12

Which of the following is a plausible consequence of high smoking rates in China, based on the study materials?

Accepted Answer

Over a million deaths per year from smoking-related diseases, expected to double by 2025.

Question 13

Which of the following sugars is found in milk?

Accepted Answer

Lactose

Question 14

Which of the following is a correct formula for the aerobic respiration of glucose?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy}$$

Question 15

Which of the following is a common misconception about quitting smoking?

Accepted Answer

Quitting smoking does not cause any withdrawal symptoms.

Question 16

Which food substance is present in the smallest proportion in the human body but plays a crucial role in energy supply?

Accepted Answer

Carbohydrates

Question 17

If a population shifts from a diet rich in natural foods to one high in processed sugars, which health risk is most likely to increase?

Accepted Answer

Risk of diabetes and obesity

Question 18

Which of the following is a correct statement about starch?

Accepted Answer

Starch is a large, insoluble carbohydrate found as a storage molecule in many plants.

Question 19

Which of the following is a plausible reason why ex-smoker rates are high in the UK?

Accepted Answer

Public health campaigns and availability of quitting aids have encouraged many to stop smoking.

Question 20

Which of the following is a correct statement about dietary fibre?

Accepted Answer

Dietary fibre is essential for maintaining healthy digestion.

Human Health, Smoking, and Nutrition: Key Concepts in General Biology

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