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Answer the following question.
How is the structure of sarcomere suitable for the contractility of the muscle? Explain its function according to sliding filament theory.
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Answer the following question.
How does the structure of actin and myosin help in muscle contraction?
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Histones are involved in packaging of DNA into structural units called ______.
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Explain the significance of mitosis.
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Write a short note on secondary growth.
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Answer the following question.
What enables the ear pinna to be folded and twisted while the nose tip can’t be twisted?
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Answer the following question.
Sharad touched a hot plate by mistake and took away his hand quickly. Can you recognize the tissue and its type responsible for it?
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Distinguish between smooth muscles and skeletal muscles.
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Answer the following question.
Describe the digestive system of cockroach.
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Answer the following question.
Write a note on the Gizzard of cockroach.
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Answer the following question.
What would have happened if the cockroach did not had gizzard?
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Explain the following in short.
What is the role of the hypopharynx?
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Explain the following in short:
What is mesentron?
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Choose the correct option.
Tubular secretion does not take place in ______.
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Answer the following question.
Effective filtration pressure was calculated to be 20 mmHg; where glomerular hydrostatic pressure was 70 mm of Hg. Which other pressure is affecting the filtration process? How much is it?
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Answer the following question.
What kind of contraction occurs in your neck muscles while you are reading your class assignment?
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Answer the following question.
There were two cut logs of wood lying in the campus. One had growth rings and other didn’t. Teacher said it is due to differences in their pattern of growth which is dependent on the season. How?
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Answer the following question.
While on the trip to Kashmir, Pintoo observed that cut portions of large trees show distinct rings, which he never found in Maharashtra. Why is so?
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Answer the following question.
Student found a wooden stopper in lab. He was told by an old lab attendant that it is there for many years. He kept thinking how it did not rot?
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Identify and name the type of tissue in the following:
Inner lining of the intestine
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