<span> C.It transmits genetic information to the next generation. The key role of DNA is </span>to store genetic information for long term. It contains all components and basic structures of the cells, including RNA and proteins. They regulate how these genetic information will be expressed or transmitted.
three domains , archae- 1st appeared, prokaria- not closed by nucleus and eukaria closed by nucleus
the three kinds of nitrogenous wastes based on the energy required to synthesize them are arranged; Ammonia < urea < uric acid.
Nitrogenous wastes are the nitrogen compounds that organisms use to get rid of excess nitrogen. Ammonia, urea, and uric acid are the most common nitrogenous wastes that animals excrete. Protein metabolism generates all of these nitrogenous wastes.
Ammonia is the most toxic of these nitrogenous wastes, and it is the most common but requires the least energy. Urea is more harmful than uric acid, but it is less harmful than ammonia, reducing the amount of energy required to synthesize it. Uric acid is the least harmful, a non-poisonous particle with four nitrogen molecules. This is useful for birds and reptiles that lay hard eggs because it eliminates the most nitrogen, uses the least amount of water, and is not toxic. It also takes the most energy input.
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The answer is B and D i learned this in biology last week
An atom that has gained or lost electrons is called an ion