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Questions and Answers
Which hormone is secreted when the ovulated egg gets fertilized and the embryo is implanted?
What does the presence of hCG in maternal blood and urine indicate?
What happens in the absence of fertilization?
What is the main factor affecting productivity in plants?
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Which of the following is NOT a property of water mentioned in the text?
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What is the pH of pure water?
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Which of the following is NOT a role of water in plant cells?
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What is water's biological importance due to?
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Study Notes
Hormonal Changes in Fertilization
- Human Chorionic Gonadotropin (hCG) is secreted when an ovulated egg is fertilized and the embryo implants in the uterus.
- The presence of hCG in maternal blood and urine indicates pregnancy.
Consequences of Absence of Fertilization
- In the absence of fertilization, the hormone levels drop, leading to the shedding of the uterine lining, commonly referred to as menstruation.
Factors Affecting Plant Productivity
- The main factor affecting productivity in plants is nutrient availability, alongside light and water.
Properties and Roles of Water
- Water has several unique properties, including cohesion, adhesion, high specific heat, and solvent capabilities. Be aware of which properties may not apply if mentioned in context.
- The pH of pure water is neutral, specifically 7.
- Water plays crucial roles in plant cells, such as providing structural support, facilitating nutrient transport, and maintaining cell turgor pressure.
Biological Importance of Water
- Water's biological importance stems from its capacity to dissolve a wide range of substances, making it essential for biochemical reactions and cellular processes.
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Description
Test your knowledge on pregnancy indicators and the role of human chorionic gonadotropin (hCG) in this informative quiz. Learn about the signs and symptoms of pregnancy, as well as how hCG affects the menstrual cycle.
