Biology miscellaneous
- Which of the following does not provide any energy?
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Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
Correct Option: C
Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat-soluble (requires fat for absorption and are stored in fat tissue).
- Liver-oil of fish is rich in
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Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega-3 fatty acids and Vitamin D.
Correct Option: A
Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega-3 fatty acids and Vitamin D.
- The brain of a computer is
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The CPU or Central Processing Unit is the "brain" of the computer, it is the 'compute' in computer. Computer CPUs (processors) are composed of thin layers of thousands of transistors. Transistors are tiny, nearly microscopic bits of material that will block electricity when the electricity is only a weak charge, but will allow the electricity pass through when the electricity is strong enough.
Correct Option: A
The CPU or Central Processing Unit is the "brain" of the computer, it is the 'compute' in computer. Computer CPUs (processors) are composed of thin layers of thousands of transistors. Transistors are tiny, nearly microscopic bits of material that will block electricity when the electricity is only a weak charge, but will allow the electricity pass through when the electricity is strong enough.
- Which of the following is not a part of the Darwin’s theory of evolution?
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The inheritance of acquired characteristics is a hypothesis that physiological changes acquired over the life of an organism (such as the enlargement of a muscle through repeated use) may be transmitted to offspring. It is also commonly referred to as the theory of adaptation equated with the evolutionary theory of French naturalist Jean-Baptiste Lamarck.
Correct Option: D
The inheritance of acquired characteristics is a hypothesis that physiological changes acquired over the life of an organism (such as the enlargement of a muscle through repeated use) may be transmitted to offspring. It is also commonly referred to as the theory of adaptation equated with the evolutionary theory of French naturalist Jean-Baptiste Lamarck.
- The nitrogen in the ecosystem is circulated by—
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Bacteria play a great role in nitrogen fixation. Nitrogen fixing bacteria inhabit legume root nodules. Nitrogenase is the enzyme in nitrogen-fixing bacteria that catalyzes the conversion of atmospheric nitrogen into ammonia.
Correct Option: B
Bacteria play a great role in nitrogen fixation. Nitrogen fixing bacteria inhabit legume root nodules. Nitrogenase is the enzyme in nitrogen-fixing bacteria that catalyzes the conversion of atmospheric nitrogen into ammonia.