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Flashcards

Homeostasis

Telangana Open School (TOSS) · Class 12 · Biology

Flashcards for Homeostasis — Telangana Open School (TOSS) Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.

44 questions30 flashcards5 concepts

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Card 1Homeostasis

What is homeostasis?

Answer

Homeostasis is the process by which the body maintains a stable internal environment despite changes in external conditions. It ensures that factors like temperature, water content, sugar levels, and

Card 2Homeostasis

Why is homeostasis important for cells?

Answer

Cells require a stable internal environment to function efficiently. Factors like temperature, pH, and chemical concentrations must remain within specific limits. If these fluctuate too much, enzymes

Card 3Homeostasis

Give three examples of conditions regulated by homeostasis.

Answer

1. Body temperature (thermoregulation) 2. Blood sugar levels (regulated by insulin and glucagon) 3. Water balance (controlled by kidneys and ADH hormone). These are kept within narrow ranges to ensure

Card 4Thermoregulation

What is thermoregulation?

Answer

Thermoregulation is the process by which the body maintains a constant internal temperature despite changes in the external environment. In humans, the normal core body temperature is around 37°C. Thi

Card 5Thermoregulation

Why is thermoregulation necessary?

Answer

Thermoregulation is necessary because enzymes, which control all metabolic reactions, are highly sensitive to temperature. Above 45°C, enzymes get denatured and stop working. Below 0°C, water freezes

Card 6Enzyme Function

What happens to enzymes at 0°C and below?

Answer

At 0°C and below, enzymes become inactive due to low molecular movement. Although they are not destroyed, their activity slows down significantly. Additionally, freezing of water inside and between ce

Card 7Enzyme Function

What happens to enzymes at 45°C and above?

Answer

At 45°C and above, enzymes begin to denature. Their three-dimensional structure unfolds, making them unable to bind with substrates. This stops catalytic activity and disrupts metabolic processes. Pro

Card 8Enzyme Function

What is the optimum temperature for human enzymes?

Answer

The optimum temperature for most human enzymes is between 35°C and 40°C, with 37°C being the average body temperature. At this range, enzyme activity is highest and metabolic reactions proceed efficie

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Frequently Asked Questions

What are the important topics in Homeostasis for Telangana Open School (TOSS) Class 12 Biology?
Homeostasis covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Homeostasis — Telangana Open School (TOSS) Class 12 Biology?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Homeostasis?
There are 30 flashcards for Homeostasis covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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