1. Which structure of the excretory system in humans is responsible for converting ammonia into urea? - Liver is responsible for converting ammonia into urea.
2. Breathing in humans is driven by all of the following except
B. Air Pressure.
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It's B
Explanation:
Because the fossil record shows how organisms have evoluate from relatively simple organisms to more complex organisms
Because it has no seed or have seeds with wax coating that helps prevent water loss. So it would be the one that says , It has a waxy material that prevents the loss of water to the environment. because that is true.
Explanation:
Ammonium hydroxide mostly acts as a reactant. Ammonium hydroxide is a colorless solution and exists only in solution form. It has a strong and pungent odor. It reacts with sulfuric acid and also many other strong acids. This reaction is exothermic which releases huge amount of heat or energy.
Ammonia water when in contact with volatile compounds, forms fumes. Ammonium hydroxide dissolves copper and zinc. It produces ammonia and nitroxides when heated to decomposition.
Answer: Point mutation is easily reversible, thus non-lethal
Explanation:
Point mutation is caused by exchange of a single nucleotide for another. These change is called
1) Transition (when a purine base substitute another purine base, or pyrimidine bases substitute each other)
2) Transversion (when a purine base substitute a pyrimidine base).
However, note that a point mutation can be easily reversed by another point mutation; so, the claim that a nucleotide difference in the Hsr12 gene caused the human disease is inaccurate
