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Questions and Answers
What is the main function of the sepal in a plant?
What is the main function of the sepal in a plant?
- To produce male sex cells
- To protect the unopened flower (correct)
- To transfer pollen grains
- To attract pollinating insects
In plant reproduction, what is the role of the stigma?
In plant reproduction, what is the role of the stigma?
- Transferring anthers
- Releasing pollen grains
- Collecting ovules (correct)
- Producing male sex cells
What is the primary function of haemoglobin in the red blood cells?
What is the primary function of haemoglobin in the red blood cells?
- To transport vitamins and minerals
- To regulate body temperature
- To provide oxygen to the tissues (correct)
- To store energy for the body
What is the primary cause of scurvy?
What is the primary cause of scurvy?
What is the role of collagen in the body?
What is the role of collagen in the body?
What is the primary function of roughage in the diet?
What is the primary function of roughage in the diet?
What is the result of Vitamin D deficiency in children?
What is the result of Vitamin D deficiency in children?
What is the primary cause of anaemia?
What is the primary cause of anaemia?
What is the function of blood platelets in the context of the text?
What is the function of blood platelets in the context of the text?
What is the risk related to CDH genes as mentioned in the text?
What is the risk related to CDH genes as mentioned in the text?
Which factor is most likely to contribute to preventing cholesterol buildup as indicated in the text?
Which factor is most likely to contribute to preventing cholesterol buildup as indicated in the text?
What is the main purpose of gas exchange in the respiration process described in the text?
What is the main purpose of gas exchange in the respiration process described in the text?
How are nutrients transported to the heart in the context of the text?
How are nutrients transported to the heart in the context of the text?
What is the function of cilia in the respiratory system based on the text?
What is the function of cilia in the respiratory system based on the text?
What is the result of a lack of protein in the diet?
What is the result of a lack of protein in the diet?
What is the function of the alimentary canal?
What is the function of the alimentary canal?
What is the result of consuming a diet high in saturated fat?
What is the result of consuming a diet high in saturated fat?
What is the term for a diet that lacks essential nutrients?
What is the term for a diet that lacks essential nutrients?
What is the term for a severe protein deficiency disease?
What is the term for a severe protein deficiency disease?
What is the result of a lack of fiber in the diet?
What is the result of a lack of fiber in the diet?
What is the primary role of mitosis?
What is the primary role of mitosis?
Which process results in genetically identical daughter cells?
Which process results in genetically identical daughter cells?
What is a key consequence of deforestation on the carbon cycle?
What is a key consequence of deforestation on the carbon cycle?
Where does the energy for photosynthesis primarily come from?
Where does the energy for photosynthesis primarily come from?
What is the main function of decomposers in an ecosystem?
What is the main function of decomposers in an ecosystem?
How do fossil fuels primarily impact the carbon cycle?
How do fossil fuels primarily impact the carbon cycle?
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Study Notes
Plant Structure and Function
- Sepals protect the developing flower and support the petals.
- Stigma receives pollen during plant reproduction, crucial for fertilization.
Human Physiology
- Haemoglobin's primary function is transporting oxygen in red blood cells.
- Scurvy is primarily caused by a deficiency of vitamin C.
- Collagen provides structure and strength to connective tissues in the body.
- Roughage aids digestion and helps maintain gut health in the diet.
Nutritional Deficiencies
- Vitamin D deficiency in children can lead to rickets, affecting bone development.
- Anaemia is primarily caused by a lack of iron, resulting in decreased hemoglobin production.
- A diet lacking essential nutrients is termed malnutrition.
- Severe protein deficiency is known as kwashiorkor.
- A lack of fiber in the diet may lead to constipation and digestive issues.
Blood Physiology
- Blood platelets play a crucial role in clotting, preventing excessive bleeding.
Genetic and Health Risks
- CDH gene mutations can result in increased risk for various health issues.
Cholesterol Management
- Regular physical activity is likely to prevent cholesterol buildup in the body.
Respiratory and Circulatory Functions
- Gas exchange is vital for providing oxygen to tissues and removing carbon dioxide.
- Nutrients are transported to the heart via the blood through the circulatory system.
- Cilia in the respiratory system help trap and expel foreign particles and pathogens.
Diet-related Health Effects
- A diet high in saturated fat can increase the risk of cardiovascular diseases.
Cell Biology
- Mitosis primarily serves the role of growth and tissue repair through cell division.
- Mitosis results in genetically identical daughter cells, maintaining genetic continuity.
Environmental Impact
- Deforestation disrupts the carbon cycle by reducing the amount of carbon absorbed by trees.
- The energy for photosynthesis primarily comes from sunlight.
- Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.
- Fossil fuels contribute to the carbon cycle by releasing stored carbon into the atmosphere when burned.
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