Obtaining Energy and Removing Waste

Obtaining Energy and Removing Waste

reminder

• if you want to read raise your hand

• ​don’t said the answer

• ​don’t cheat

• ​then you don’t know anything in ministry exam.​

Vocabulary

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• carbohydrate

• ​eliminate

• neutralize

• ​Physical

• ​Protein\​

• Swallow​

​why do organisms eat or need food ?

Organisms need to take food to get energy and perform life processes. ..... To perform all these life processes, the organism needs energy and nutrients.

​How does Digestion work

​​Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules

Multiple Choice

Why do we eat food?

• To make waste products

• To get nutrients and energy

• To put oxygen into the body cells

• To keep our stomachs full

​​What is Calories & nutrient & 7 nutrient ?

​A Calorie is the amount of energy it takes to raise the temperature of 1 kg of water by 1°C. nutrient are parts of food that used by the body to grow and survive carbohydrates, proteins, fats, vitamins, minerals, Roughage and water.

Multiple Choice

what is the amount of the energy ?

• calorie

• Organs

• Esophagus

• Nutrient

​The small intestine is about 20 feet long and about an inch in diameter. Its absorb most of the nutrients from what we eat and drink. The large intestine is about 5 feet long and about 3 inches in diameter. The colon absorbs water from wastes, creating stool . ​The excretory system collects and eliminates wastes from the body and regulates the level of fluid in the body Villi are fold of small intestine are covered with fingerlike projection. 

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Multiple Select

7 nutrient are ?

• Water

• Calorie

• sweet

• Carbohydrate and Proteins

​​What is photosynthesis short answer ?

​is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.​

Multiple Select

what is the types of Digestion ?

• mechanical

• Cardiac

• chemical

• physical

​What is Digestion?

​Digestion is the mechanical and chemical breakdown of food into smaller particles and molecules that your body can absorb and use.

​Parts of the Digestive System

• Mouth

• Esophagus

• Stomach

• Small Intestine

• Large Intestine

• Liver (A)

• Gallbladder (B)

• Pancreas (C)

Multiple Choice

Where do you start to chew your food?

• large intestine

• stomach

• mouth

• esophagus

​Breaking Food Down

​Mechanical Digestion – Involves the tearing, crushing and mashing of food. Example: When you take a bite and chew it with your teeth or when your muscles of the stomach contract and relax.

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Chemical Digestion – When chemicals called enzymes help break down larger molecules into smaller molecules.

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​What is the purpose of the Digestive System?

​The purpose of the digestive system is to take in food and break it down so your cells can get (nutrients), and those nutrients enter your blood so that the circulatory system can take it to every cell in your body.

​What is the path food takes through your body?

1) Mouth – Food is shredded by the teeth and mixed with saliva. Saliva breaks down starches into simple sugars and softens and moistens the food. The tongue pushes the food, now called bolis, down the esophagus.​

Multiple Choice

What is the purpose of the digestive system?

• to break down food into nutrients the body can use

• to exchange gasses in your body

• to get rid of waste in the body

• to break down food into oxygen

​What is the path food takes to get through your body?

​2) Esophagus – The muscles in the esophagus push the bolis down into the stomach while its walls, lined with mucus, makes it easier for the food to slide down.

​What is the path food takes to get through your body?

3) Stomach – There is a strong acid called Hydrochloric acid  that dissolves the food.The digestive juices (enzymes and acid) that break protein causing it to now turn into a mush called the bolis. (chyme).  ​

​What is the path food takes to get through your body?

​4) Small Intestine – Most of digestion occurs here. Also reabsorption of the broken down macronutrients get reabsorbed in the blood. Nutrients passes into the bloodstream through the villi, which line the small intestine walls, and are transported throughout the body.

Multiple Choice

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What is digestion?

• The process of breaking down large food molecules into bigger molecules.

• The process of breaking down large food molecules into smaller molecules.

​What is the path food takes to get through your body?

• 5) Large Intestine – Materials that cannot be absorbed pass into the large intestine. The large intestine absorbs water and stores waste until it can be eliminated from the body.

Multiple Choice

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Which type of digestion breaks down pieces of food into small molecules?

• chemical digestion

• mechanical digestion

• absorption digestion

• peristalsis digestion

Multiple Choice

What is the role of the salivary glands in digestion?

• digest food

• get rid of waste

• produce saliva

• produce saliva

Multiple Choice

Which of the following is the longest organ in the digestive system?

• Heart

• Small intestine

• Large Intestine

• Large Intestine

​What is the Function of the excretory system

​Excretory system main job is to filter our cell waste or metabolic waste from the blood in the circulatory system

Organs of Excretory system

• Kidney- Contains a filter called nephrons that filters the blood Nephrons produce urine.

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• Ureter- Collects urine from the kidney and delivers to the bladder

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• Bladder- stores urine until ready to release it through the urethra

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• Urethra- small tube that send urine out of the body.

​Nephron loop

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​This part of the nephron is called the loop of Henle. Its main function is to reabsorb water and sodium chloride from the filtrate. This conserves water for the organism, producing highly concentrated urine.

Multiple Choice

How is cell waste being filtered out of your blood?

• Nephrons in the kidneys filter out the waste.

• Alveoli in the lungs are exchanging oxygen and carbon dioxide.

Multiple Choice

Alveoli in the lungs are exchanging oxygen and carbon dioxide.

• Kidney

• Ureter

• Urethra

• Bladder

Multiple Choice

An activity like sleeping does not require energy

• False

• True

Multiple Choice

the system that collects and eliminates wastes from the body and regulates the level of fluid in the body

• digestion

• excretory system

• chemical digestion

• kidneys

Multiple Choice

Which of the following plays a role in the excretory system

• skin

• kidneys

• respiratory system

• all of the above

Multiple Choice

Amount of energy needed to raise temperature 1 gram of water 1 degree C

• villi

• Calorie

• Kidneys

• Nutrients

​I hop you love the lesson

​bye