The answer is (d.) Some scientists believe that prions, tiny proteins much smaller than a cell, that can replicate themselves may be living organisms.
Prions are like viruses, they are not alive making statement B to be true. Prions lack the ability to grow and reproduce. they are dependent on the living cells to replicate. Statement A is absolutely correct while Statement C is somehow wrong. According to scientists, the accurate count of cells in a human is 37.2 Trillion.
Answer:
The answer is
The digestive system excretes a solid waste and the excretory system excretes a liquid waste.
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<span>Lepidoptera
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Answer:
Mouth, also called oral cavity or buccal cavity, in human anatomy, orifice through which food and air enter the body. the mouth opens to the outside at the lips and empties into the throat at the rear; its boundaries are defined by the lips, cheeks, hard and soft palates, and glottis.
Explanation:
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