Gr 9 NATURAL SCIENCES: CH 1.5 SUM Digestive System

What are the seven essential groups that constitute a healthy diet?

Proteins, Carbohydrates, Fats and Oils, Vitamins, Minerals, Fibre, and Water (correct)
Proteins, Carbohydrates, Fats and Oils, Vitamins, Minerals, Fibre, and Air
Proteins, Carbohydrates, Fats and Oils, Vitamins, Minerals, Fibre, and Sugar
Proteins, Carbohydrates, Fats and Oils, Vitamins, Minerals, Fibre, and Salt

What is the primary function of carbohydrates in the body?

To provide energy to the body (correct)
To protect and insulate organs
To build and repair body cells and tissues
To maintain healthy hair and nails

What are healthy fats found in?

Chips and pastries
Soft drinks and sweetened fruit juices
Olive oil, canola oil, and sardines (correct)
Sweets and biscuits

What is the role of vitamins in the body?

To help in various chemical reactions (A) Signup and view all the answers

What is the importance of proteins in the body?

To build and repair body cells and tissues (A) Signup and view all the answers

What are plant-based sources of protein?

Soya beans, peas, beans, nuts, and seeds (C) Signup and view all the answers

What is the function of fibre in the body?

Non-digestible carbohydrates (B) Signup and view all the answers

What is the importance of water in a healthy diet?

One of the seven essential groups that constitute a healthy diet (C) Signup and view all the answers

What is the role of vitamins in the body, according to Vitamin A?

To strengthen the immune system and support eyesight (B) Signup and view all the answers

What should be done when consuming carbohydrates?

Moderate the intake of processed carbohydrates (B) Signup and view all the answers

Where does the majority of digestion and nutrient absorption occur?

Small Intestine (A) Signup and view all the answers

What is the primary function of the large intestine?

To absorb water and salts from indigestible food matter (D) Signup and view all the answers

What is the function of villi and microvilli in the small intestine?

To increase the surface area for absorption (B) Signup and view all the answers

What is the process that moves food through the alimentary canal?

Peristalsis (A) Signup and view all the answers

Which enzyme breaks down carbohydrates?

Amylase (A) Signup and view all the answers

What is the primary location for nutrient absorption?

Small Intestine (D) Signup and view all the answers

What is the process of expelling undigested and unabsorbed food from the body?

Egestion (D) Signup and view all the answers

What is the role of enzymes in digestion?

To break down nutrients (D) Signup and view all the answers

What is stored in the rectum?

Feces (C) Signup and view all the answers

Which of the following is NOT a function of the small intestine?

Storage of feces (D) Signup and view all the answers

What is the main function of vitamin C in the human body?

Keeping skin and gums healthy and boosting the immune system (B) Signup and view all the answers

Which mineral is essential for strong bones and teeth?

Calcium (D) Signup and view all the answers

What is the main function of fibre in the human body?

Maintaining regular bowel movements and preventing constipation (C) Signup and view all the answers

What is the approximate percentage of water in the human body?

50% (C) Signup and view all the answers

What is the purpose of the starch test in food testing?

Identifying the presence of starch (B) Signup and view all the answers

What is the result of poor dietary choices?

Health issues such as obesity, malnutrition, and chronic diseases (A) Signup and view all the answers

What is the name of the process that transforms food into small molecules that can be absorbed and transported to the body's cells?

Digestion (A) Signup and view all the answers

What type of digestion occurs in the mouth?

Both mechanical and chemical digestion (C) Signup and view all the answers

What is the function of the oesophagus in the alimentary canal?

Moving food from the mouth to the stomach through peristalsis (A) Signup and view all the answers

What is the function of gastric juices in the stomach?

Secreting enzymes and hydrochloric acid to facilitate chemical digestion (D) Signup and view all the answers

What is the primary function of vitamin D in the body?

Building strong bones and teeth (B) Signup and view all the answers

Which of the following is a source of magnesium?

Bananas and nuts (D) Signup and view all the answers

What is the primary function of fibre in the diet?

Maintaining regular bowel movements and preventing constipation (D) Signup and view all the answers

What is the purpose of the emulsion test in food testing?

To detect the presence of fats and oils (C) Signup and view all the answers

What is the main function of proteins in the human body?

To build and repair body cells and tissues (C) Signup and view all the answers

What is the result of not drinking enough water daily?

Dehydration and poor bodily functions (A) Signup and view all the answers

Why is it important to moderate the intake of processed carbohydrates?

Because they can lead to health problems if consumed excessively (B) Signup and view all the answers

Which part of the alimentary canal is responsible for mechanical digestion?

Stomach (C) Signup and view all the answers

What type of digestion occurs in the stomach?

Both mechanical and chemical digestion (D) Signup and view all the answers

What is the role of fats and oils in the body?

To protect and insulate organs, and absorb and transport certain vitamins (A) Signup and view all the answers

What is the function of vitamin A?

To strengthen the immune system and aid eyesight (D) Signup and view all the answers

What is the function of the oesophagus in the alimentary canal?

To move food from the mouth to the stomach (A) Signup and view all the answers

What is the consequence of poor dietary choices?

Obesity, malnutrition, and chronic diseases (C) Signup and view all the answers

What are some sources of healthy fats?

Olive oil, canola oil, and sardines (C) Signup and view all the answers

What percentage of the human body is composed of water?

50% (A) Signup and view all the answers

Why is water an essential component of a healthy diet?

Because it helps in the elimination of waste products (C) Signup and view all the answers

What is the importance of including foods from all seven essential groups in a healthy diet?

To ensure the body gets a balanced mix of all nutrients (B) Signup and view all the answers

What are some plant-based sources of protein?

Soya beans, peas, beans, nuts, and seeds (C) Signup and view all the answers

What is the primary energy source for the body?

Carbohydrates (B) Signup and view all the answers

Why is it important to consume fats in moderation?

Because they can lead to health problems if consumed excessively (B) Signup and view all the answers

What is the primary function of enzymes in digestion?

To break down nutrients into smaller molecules (B) Signup and view all the answers

What is the role of the small intestine in the digestive system?

To break down proteins, fats, and carbohydrates with the aid of enzymes and bile (D) Signup and view all the answers

What is the function of the rectum in the digestive system?

To store feces until they are expelled through the anus (C) Signup and view all the answers

What is the result of the processes of peristalsis in the digestive system?

Food is propelled through the alimentary canal (D) Signup and view all the answers

Which enzyme breaks down fats in the digestive system?

Lipase (A) Signup and view all the answers

What is the primary function of the large intestine in the digestive system?

To absorb water and salts from indigestible food matter (D) Signup and view all the answers

What is the process of nutrient absorption primarily occurring in?

Small intestine (B) Signup and view all the answers

What is the role of villi and microvilli in the small intestine?

To increase the surface area for nutrient absorption (C) Signup and view all the answers

What is the process of expelling undigested and unabsorbed food from the body?

Egestion (A) Signup and view all the answers

Which enzyme breaks down proteins in the digestive system?

Protease (C) Signup and view all the answers

What is the primary function of proteins in building and repairing body cells and tissues?

To facilitate chemical reactions in the body (C) Signup and view all the answers

Why is it essential to include foods from all seven essential groups in a healthy diet?

To maintain proper body function and overall health (C) Signup and view all the answers

What is the importance of vitamins in the body, besides being essential for various chemical reactions?

They strengthen the immune system and promote healthy eyesight (D) Signup and view all the answers

Why is it crucial to moderate the intake of processed carbohydrates?

To prevent an excessive spike in blood sugar levels (C) Signup and view all the answers

What is the primary role of fats and oils in the body, besides providing energy?

To protect and insulate organs (D) Signup and view all the answers

What is the importance of fibre in a healthy diet, besides being a non-digestible carbohydrate?

It promotes digestive health and regular bowel movements (C) Signup and view all the answers

What is the primary function of water in a healthy diet?

To maintain proper bodily functions and overall health (C) Signup and view all the answers

Why is it essential to consume healthy fats in moderation?

To prevent an excessive accumulation of fat in the body (A) Signup and view all the answers

What is the primary importance of including a variety of nutrients and substances in a healthy diet?

To maintain proper bodily functions and overall health (A) Signup and view all the answers

What is the consequence of not including foods from all seven essential groups in a healthy diet?

Impaired bodily functions and overall health (B) Signup and view all the answers

What is the primary function of vitamin C in the human body?

Keeping skin and gums healthy and boosting the immune system (B) Signup and view all the answers

What is the main function of magnesium in the human body?

Important for strong bones, teeth, and muscles (C) Signup and view all the answers

What is the primary function of the alimentary canal?

To facilitate the digestion and absorption of food (C) Signup and view all the answers

What is the result of poor dietary choices?

Conditions such as obesity, malnutrition, and chronic diseases (A) Signup and view all the answers

What type of digestion occurs in the mouth?

Both mechanical and chemical digestion (D) Signup and view all the answers

What is the purpose of the starch test in food testing?

To identify the presence of starch (C) Signup and view all the answers

What is the primary function of calcium in the human body?

Essential for strong bones and teeth (A) Signup and view all the answers

What is the main function of the stomach in the alimentary canal?

To further the process of chemical digestion through gastric juices (D) Signup and view all the answers

What is the approximate percentage of water in the human body?

More than 50% (A) Signup and view all the answers

What is the primary function of sodium in the human body?

Regulates water in the blood and aids muscle and nerve function (D) Signup and view all the answers

What is the primary function of the enzymes amylase, protease, and lipase in the digestive system?

To break down carbohydrates, proteins, and fats (C) Signup and view all the answers

What is the primary location where the process of absorption occurs?

Small intestine (D) Signup and view all the answers

What is the significance of peristalsis in the digestive system?

It ensures the progression of food through the alimentary canal (A) Signup and view all the answers

What is the primary function of the large intestine?

To absorb water and salts from remaining indigestible food matter (B) Signup and view all the answers

What is the significance of villi and microvilli in the small intestine?

They increase the surface area for absorption (B) Signup and view all the answers

What is the result of the process of absorption in the small intestine?

Nutrients are transported to cells through the bloodstream (D) Signup and view all the answers

What is the function of the rectum in the digestive system?

To store feces until defecation (A) Signup and view all the answers

What is the primary function of enzymes in the digestive system?

To break down nutrients into smaller molecules (D) Signup and view all the answers

What is the process of expelling undigested and unabsorbed food from the body?

Egestion (D) Signup and view all the answers

Where do the enzymes amylase, protease, and lipase receive their target nutrients from?

Pancreas and liver (A) Signup and view all the answers

Gr 9 NATURAL SCIENCES: CH 1.5 SUM Digestive System

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Questions and Answers

What are the seven essential groups that constitute a healthy diet?

What is the primary function of carbohydrates in the body?

What are healthy fats found in?

What is the role of vitamins in the body?

What is the importance of proteins in the body?

What are plant-based sources of protein?

What is the function of fibre in the body?

What is the importance of water in a healthy diet?

What is the role of vitamins in the body, according to Vitamin A?

What should be done when consuming carbohydrates?

Where does the majority of digestion and nutrient absorption occur?

What is the primary function of the large intestine?

What is the function of villi and microvilli in the small intestine?

What is the process that moves food through the alimentary canal?

Which enzyme breaks down carbohydrates?

What is the primary location for nutrient absorption?

What is the process of expelling undigested and unabsorbed food from the body?

What is the role of enzymes in digestion?

What is stored in the rectum?

Which of the following is NOT a function of the small intestine?

What is the main function of vitamin C in the human body?

Which mineral is essential for strong bones and teeth?

What is the main function of fibre in the human body?

What is the approximate percentage of water in the human body?

What is the purpose of the starch test in food testing?

What is the result of poor dietary choices?

What is the name of the process that transforms food into small molecules that can be absorbed and transported to the body's cells?

What type of digestion occurs in the mouth?

What is the function of the oesophagus in the alimentary canal?

What is the function of gastric juices in the stomach?

What is the primary function of vitamin D in the body?

Which of the following is a source of magnesium?

What is the primary function of fibre in the diet?

What is the purpose of the emulsion test in food testing?

What is the main function of proteins in the human body?

What is the result of not drinking enough water daily?

Why is it important to moderate the intake of processed carbohydrates?

Which part of the alimentary canal is responsible for mechanical digestion?

What type of digestion occurs in the stomach?

What is the role of fats and oils in the body?

What is the function of vitamin A?

What is the function of the oesophagus in the alimentary canal?

What is the consequence of poor dietary choices?

What are some sources of healthy fats?

What percentage of the human body is composed of water?

Why is water an essential component of a healthy diet?

What is the importance of including foods from all seven essential groups in a healthy diet?

What are some plant-based sources of protein?

What is the primary energy source for the body?

Why is it important to consume fats in moderation?

What is the primary function of enzymes in digestion?

What is the role of the small intestine in the digestive system?

What is the function of the rectum in the digestive system?

What is the result of the processes of peristalsis in the digestive system?

Which enzyme breaks down fats in the digestive system?

What is the primary function of the large intestine in the digestive system?

What is the process of nutrient absorption primarily occurring in?

What is the role of villi and microvilli in the small intestine?

What is the process of expelling undigested and unabsorbed food from the body?

Which enzyme breaks down proteins in the digestive system?

What is the primary function of proteins in building and repairing body cells and tissues?

Why is it essential to include foods from all seven essential groups in a healthy diet?

What is the importance of vitamins in the body, besides being essential for various chemical reactions?

Why is it crucial to moderate the intake of processed carbohydrates?

What is the primary role of fats and oils in the body, besides providing energy?

What is the importance of fibre in a healthy diet, besides being a non-digestible carbohydrate?

What is the primary function of water in a healthy diet?

Why is it essential to consume healthy fats in moderation?

What is the primary importance of including a variety of nutrients and substances in a healthy diet?

What is the consequence of not including foods from all seven essential groups in a healthy diet?

What is the primary function of vitamin C in the human body?

What is the main function of magnesium in the human body?

What is the primary function of the alimentary canal?

What is the result of poor dietary choices?

What type of digestion occurs in the mouth?

What is the purpose of the starch test in food testing?