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Ch 05 - Life Processes10th Science
Defining Characteristics of Life
Why is visible movement (like running or breathing) insufficient to define whether an organism is alive, and what is the ultimate biological criterion?
Why is visible movement (like running or breathing) insufficient to define whether an organism is alive, and what is the ultimate biological criterion?
CONCEPT
- Visible Movement Limit: Some plants do not visibly grow, and some animals breathe without visible movement.
- The Ultimate Criterion: Invisible molecular movements are strictly necessary for life. Living structures are highly organised and constantly face environmental wear and tear. Therefore, organisms must continually move molecules around to repair and maintain their cellular structures.
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Life Processes
What is the biological definition of 'Life Processes', and what are the four core examples?
What is the biological definition of 'Life Processes', and what are the four core examples?
DEFINITION
- Definition: The basic physiological functions performed by living organisms that are absolutely essential for their survival and body maintenance, even when the organism is completely at rest or asleep.
- Core Examples: Nutrition, Respiration, Transportation, and Excretion.
Prism Memory Hook
NRTE: Nutrition, Respiration, Transportation, Excretion
Modes of Nutrition
What is the fundamental difference between Autotrophic and Heterotrophic modes of nutrition?
What is the fundamental difference between Autotrophic and Heterotrophic modes of nutrition?
DISTINCTION
Autotrophic Nutrition:
- Organisms synthesize their own complex food from simple inorganic sources ( and ) utilizing an external energy source (sunlight).
- Examples: Green plants and some bacteria.
Heterotrophic Nutrition:
- Organisms cannot synthesize their own food and must strictly depend on complex organic substances prepared by autotrophs (directly or indirectly).
- Examples: Animals, fungi, and most bacteria.
Prism Memory Hook
Auto = Self, Hetero = Others
Also in this chapter
44 more cards to study in Prism
- 4Equation for Photosynthesis
- 5Parasitic Nutritive Strategy
- 6Major Events of Photosynthesis
- 7Raw Materials from Soil
- 8Functioning of Stomata
- 9Testing for Chlorophyll Necessity
- 10Role of KOH in Photosynthesis Experiment
- 11Holozoic Nutrition in Amoeba
- 12Alimentary Canal Length
- 13Digestion in the Mouth
- 14Dental Caries & Plaque Formation
- 15Gastric Glands & Stomach Digestion
- 16Functions of Bile Juice
- 17Pancreatic and Intestinal Enzymes
- 18Anaerobic Respiration in Yeast (Fermentation)
- 19Intestinal Villi
- 20Anaerobic Respiration in Muscle Cells
- 21Aerobic vs Anaerobic Respiration
- 22Aerobic Respiration Pathway
- 23ATP: The Energy Currency
- 24Sites of Gaseous Exchange in Plants
- 25Breathing Rate: Aquatic vs Terrestrial
- 26Human Respiratory Tract
- 27Alveolar Structure and Surface Area
- 28Haemoglobin: The Respiratory Pigment
- 29Respiratory Damage from Smoking
- 30Heart Chambers & Thermoregulation
- 31Double Circulation
- 32Ventricular Muscular Walls
- 33Cardiac and Venous Valves
- 34Arteries vs. Veins
- 35Capillaries
- 36Blood Pressure Measurement
- 37Hypertension (High Blood Pressure)
- 38Platelets and Vessel Leak Maintenance
- 39Lymph (Tissue Fluid)
- 40Water Transport in Xylem
- 41Translocation in Phloem
- 42Human Excretory System Anatomy
- 43Filtration Unit: The Nephron
- 44Tubular Selective Re-absorption
- 45Artificial Kidney (Hemodialysis)
- 46Plant Excretion Strategies
- 47Living vs. Deceased Organ Donation
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10th Science
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