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Questions and Answers
What forces are responsible for slowing down a car?
What forces are responsible for slowing down a car?
Which part of the plant is primarily responsible for absorption of water?
Which part of the plant is primarily responsible for absorption of water?
In the process of photosynthesis, which two substances are combined to produce glucose?
In the process of photosynthesis, which two substances are combined to produce glucose?
What causes a person to not sink into snow when wearing snowshoes?
What causes a person to not sink into snow when wearing snowshoes?
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Which organ in the alimentary canal is responsible for digesting proteins, carbohydrates, and fats?
Which organ in the alimentary canal is responsible for digesting proteins, carbohydrates, and fats?
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Study Notes
Forces Slowing a Car
- A car slowing down is due to friction and air resistance.
- Friction and air resistance are the forces slowing the car.
Photosynthesis Word Equation
- Carbon dioxide + water → glucose + oxygen
- The equation represents the process plants use to make food.
Parts of a Plant and Their Functions
- Roots: Absorption of water and minerals
- Stem: Transport of water and minerals
- Leaves: Photosynthesis
- Flower: Reproduction
Alimentary Canal Organs and Functions
- Stomach: Food is chewed into smaller pieces and mixed into a creamy liquid.
- Small Intestine: Digests proteins, carbohydrates, and fats, and absorbs water, amino acids, sugars, and fatty acids.
- Large Intestine: Absorbs water.
Pressure and Force
- Force acts on the area.
- Larger area means less pressure
- Smaller area means higher pressure.
- Snowshoes use a larger area, reducing pressure and preventing sinking into snow.
- Sharp knives use a smaller area for a higher pressure, making cutting easier.
Poor Diet and Health Problems
- Too much sugar: Heart disease, tooth decay
- Too much fat: Heart disease
- Too much salt: High blood pressure
- Too little protein: Poor growth
- Too little carbohydrate: Little energy, poor growth
Fruit Fat and Fiber Content
- Fruits and their fat content (in grams): Apricot (0.1), Banana (0.1), Kiwi fruit (0.0), Orange (0.1), Pineapple (0.1), Strawberry (0.0)
- Fruits and their fiber content (in grams): Apricot (1.2), Banana (3.1), Kiwi fruit (2.6), Orange (2.4), Pineapple (13.8), Strawberry (0.6)
- Fruits with highest fiber: Pineapple and banana
- Importance of fiber: Fiber reduces constipation.
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