Answer:
The answer is 1, 2, 3 for the first question and 1,2,3 again for the second question.
Explanation:
The true statements about complex IV are:
1) This complex catalyzes the reduction of oxygen to water.
2) Despite consuming protons, this complex pumps H+ across the membrane at a rate of 4 per molecule of O2 reduced.
3) The protons flow across a gradient to the inner membrane space.
The true statemennts about complex IV are:
1) This complex catalyzes the reduction of oxygen to water.
2) Despite consuming protons, this complex pumps H+ across the membrane at a rate of 4 per molecule of O2 reduced.
3) The protons flow across a gradient to the inner membrane space.
They are all rocks and they are all solid
<em>Answer: The disasters are different according to their occurrence. For example, the causes of an earthquake cannot be the same as that of forest-fire. Natural disasters are caused due to different reasons like soil erosion, seismic activity, tectonic movements, air pressure, and ocean currents etc.</em>
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<em>Explanation: Have a great day,</em>
Answer:
The correct answer is: X is nitrogen dioxide, and Y is a metal oxide
Explanation:
Combustion of compound of containing nitrogen and metal will give nitrogen dioxide and metal oxide as product. During combustion reaction a compound reacts with oxygen in order to yield oxides of elements present in the compound.
The general equation is given as:

Hence, the correct answer is :X is nitrogen dioxide, and Y is a metal oxide.