Flash Cards
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What are life processes?
Life processes are essential functions that living beings perform to survive, including nutrition, respiration, excretion, and reproduction.
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2/21
What is nutrition?
Nutrition is the process by which animals obtain and use food to provide energy and support growth.
3/21
Define digestion.
Digestion is the process of breaking down complex food into simpler forms that can be absorbed by the body.
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What is mechanical digestion?
Mechanical digestion involves the physical breakdown of food into smaller pieces, primarily by chewing.
5/21
What role does saliva play in digestion?
Saliva contains enzymes that help break down starch into sugars and moistens food for easier swallowing.
6/21
What is the alimentary canal?
The alimentary canal is a long tube where digestion occurs, starting from the mouth and ending at the anus.
7/21
Explain absorption.
Absorption is the process by which digested nutrients pass into the blood from the small intestine to be transported to the body.
8/21
What is egestion?
Egestion is the process of expelling undigested food from the body through the anus.
9/21
Differentiate between respiration and breathing.
Breathing is the physical process of inhaling and exhaling air, while respiration is the chemical process that breaks down food to release energy.
10/21
What is respiration?
Respiration is the process of converting nutrients, like glucose, into energy through the consumption of oxygen.
11/21
Name the main organs involved in the respiratory system.
Main organs in the respiratory system include the lungs, trachea (windpipe), bronchi, and diaphragm.
12/21
What are gills?
Gills are specialized organs in aquatic animals that enable gas exchange, allowing them to breathe underwater.
13/21
Define rumination.
Rumination is the process where ruminant animals, like cows, re-chew their partially digested food for further digestion.
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What is the significance of the small intestine?
The small intestine is crucial for nutrient absorption, having a large surface area due to its villi.
15/21
Explain the role of the liver in digestion.
The liver produces bile that helps emulsify fats, making them easier to digest.
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What happens in the stomach during digestion?
In the stomach, food is mixed with gastric juices, where it is churned and further broken down into a semi-liquid state.
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What are the products of respiration?
The products of respiration are carbon dioxide, water, and energy.
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What do we inhale and exhale?
We inhale oxygen and exhale carbon dioxide during the breathing process.
19/21
Why is oral hygiene important?
Good oral hygiene helps prevent tooth decay and maintains overall health, as it supports effective digestion.
20/21
How do amphibians breathe?
Amphibians breathe through different mechanisms at different life stages: gills in tadpoles and lungs in adults.
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What is the circulatory system?
The circulatory system consists of the heart, blood, and blood vessels that transport nutrients and oxygen throughout the body.
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