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Questions and Answers
What is the primary purpose of photosynthesis in plants?
What is the primary purpose of photosynthesis in plants?
Which of the following is NOT a raw material required for photosynthesis?
Which of the following is NOT a raw material required for photosynthesis?
Where in the plant cell does photosynthesis occur?
Where in the plant cell does photosynthesis occur?
What is produced during the light phase of photosynthesis?
What is produced during the light phase of photosynthesis?
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During which phase of photosynthesis is ATP synthesized?
During which phase of photosynthesis is ATP synthesized?
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Which process involves the splitting of water molecules during the light phase?
Which process involves the splitting of water molecules during the light phase?
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What is the significance of glucose production in photosynthesis?
What is the significance of glucose production in photosynthesis?
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What role does chlorophyll play in photosynthesis?
What role does chlorophyll play in photosynthesis?
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What substance is formed as a result of anaerobic respiration in muscle cells?
What substance is formed as a result of anaerobic respiration in muscle cells?
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What is the process called that converts pyruvic acid into lactic acid in muscle cells?
What is the process called that converts pyruvic acid into lactic acid in muscle cells?
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What type of respiration occurs when there is insufficient oxygen in the muscles?
What type of respiration occurs when there is insufficient oxygen in the muscles?
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Which of the following is a common product of alcoholic fermentation in yeast?
Which of the following is a common product of alcoholic fermentation in yeast?
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What is released during both aerobic and anaerobic respiration?
What is released during both aerobic and anaerobic respiration?
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What is oxygen debt in relation to lactic acid?
What is oxygen debt in relation to lactic acid?
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Which product is NOT formed during anaerobic respiration in plants like yeast?
Which product is NOT formed during anaerobic respiration in plants like yeast?
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Which of the following statements is true about anaerobic respiration?
Which of the following statements is true about anaerobic respiration?
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What happens to the diaphragm during inhalation?
What happens to the diaphragm during inhalation?
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Which muscles facilitate the movement of ribs during inhalation?
Which muscles facilitate the movement of ribs during inhalation?
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What is the primary mechanism that drives the movement of air into the lungs?
What is the primary mechanism that drives the movement of air into the lungs?
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What occurs to the thoracic cavity during exhalation?
What occurs to the thoracic cavity during exhalation?
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What is the purpose of the cuticle in terrestrial plants?
What is the purpose of the cuticle in terrestrial plants?
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Which of the following statements is true about inhalation?
Which of the following statements is true about inhalation?
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Which adaptation allows for efficient transport of water and nutrients in plants?
Which adaptation allows for efficient transport of water and nutrients in plants?
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What happens to the pressure in the thoracic cavity during inhalation?
What happens to the pressure in the thoracic cavity during inhalation?
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What is the process called when undigested remains are removed from the body?
What is the process called when undigested remains are removed from the body?
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What is a key difference between Bryophytes and Pteridophytes?
What is a key difference between Bryophytes and Pteridophytes?
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What role do abdominal muscles play during inhalation?
What role do abdominal muscles play during inhalation?
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What happens to the elastic lungs during inhalation?
What happens to the elastic lungs during inhalation?
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What type of reproduction is characterized by having only one parent and no gametes?
What type of reproduction is characterized by having only one parent and no gametes?
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Which type of teeth do herbivores primarily utilize to process plant material?
Which type of teeth do herbivores primarily utilize to process plant material?
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What is an advantage of asexual reproduction in plants?
What is an advantage of asexual reproduction in plants?
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Which nutrient is primarily responsible for providing energy through its ingestion?
Which nutrient is primarily responsible for providing energy through its ingestion?
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What is a disadvantage of asexual reproduction?
What is a disadvantage of asexual reproduction?
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What characterizes the diet of omnivores?
What characterizes the diet of omnivores?
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Which of the following is the correct order of the nutritional processes?
Which of the following is the correct order of the nutritional processes?
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How do Gymnosperms and Angiosperms differ from Bryophytes and Pteridophytes in terms of fertilization?
How do Gymnosperms and Angiosperms differ from Bryophytes and Pteridophytes in terms of fertilization?
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Carnivores ingest less food than herbivores because:
Carnivores ingest less food than herbivores because:
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Which group of plants is considered the best adapted to terrestrial environments?
Which group of plants is considered the best adapted to terrestrial environments?
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Which adaptation is NOT characteristic of carnivores?
Which adaptation is NOT characteristic of carnivores?
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Which of the following nutrients is essential for growth and repair of damaged tissues?
Which of the following nutrients is essential for growth and repair of damaged tissues?
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What occurs during exhalation when it is forced?
What occurs during exhalation when it is forced?
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What is the primary factor that facilitates the diffusion of oxygen in the alveoli?
What is the primary factor that facilitates the diffusion of oxygen in the alveoli?
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Why is inhalation considered a passive process?
Why is inhalation considered a passive process?
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What causes carbon dioxide to move from the blood into the alveoli?
What causes carbon dioxide to move from the blood into the alveoli?
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What happens to the thoracic cavity pressure during exhalation?
What happens to the thoracic cavity pressure during exhalation?
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Which muscles are primarily responsible for forced exhalation?
Which muscles are primarily responsible for forced exhalation?
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What is the primary role of the alveoli in gas exchange?
What is the primary role of the alveoli in gas exchange?
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What causes a diffusion gradient for oxygen in the alveoli?
What causes a diffusion gradient for oxygen in the alveoli?
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Study Notes
Life Sciences Year Note - Grade 11
- This is a study note compiled to meet CAPS documents and examination guidelines.
- The note covers various topics in year 11 Life Sciences.
Table of Contents
- Important Information 2023: Includes assessment schedule (practical tasks, controlled tests, assignments, and final examination dates and times).
- Biodiversity and Classification of Microorganisms: Describes prokaryotes and eukaryotes, microorganisms (viruses, bacteria, protists, and fungi), and viruses.
- Biodiversity of Plants: Divides plants into four groups (bryophytes, pteridophytes, gymnosperms, and angiosperms), based on their vascular tissue, presence of seeds, and spores.
- Biodiversity of Animals: Categorizes animals into invertebrates (lacking a vertebral column) and vertebrates (with a vertebral column), discussing six phyla (porifera, cnidaria, platyhelminthes, annelida, arthropoda, and chordata).
- Photosynthesis: Explains the process of photosynthesis; raw materials (CO2, H2O, and sunlight), chlorophyll's role, products (glucose, oxygen), and the location of photosynthesis within the chloroplast.
- Animal Nutrition (Human Nutrition): Outlines five processes, necessity for food, different feeding modes (herbivores, carnivores, and omnivores), human nutrition, and the digestive system/accessory organs.
- Cellular Respiration: Discusses cellular respiration as the breakdown of glucose in the presence of oxygen, releasing energy in the form of ATP. Describes aerobic and anaerobic phases.
- Gaseous Exchange: Explains breathing, gaseous exchange, requirements for effective gaseous exchange (surface area, thin wall, moist surface, transport system), and the role of the lung, diaphragm and intercostal muscles.
- Population Ecology: Details population size, density, natality, mortality, immigration, and emigration and their impact.
- Human Impact: Discusses climate change, deforestation, desertification, ozone depletion, water availability, and concerns for biodiversity.
- Reference: Includes answer series, and other internet sources.
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Description
This comprehensive study note is tailored for Grade 11 Life Sciences, aligning with CAPS documents and examination guidelines. It covers various essential topics such as biodiversity, classification of microorganisms, plants, and animals, as well as the process of photosynthesis.
