Question

Which statements about complex IV are true? 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. 4) Conformational changes as electrons flow through the complex alter the ability of some residues to bind protons. Which statements about complex IV are true? 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. 4) Conformational changes as electrons flow through the complex alter the ability of some residues to bind protons. Statements 1, 2, and 3 are correct. Statements 1 and 4 are correct. Statements 1, 2, and 4 are correct. Statements 2, 3, and 4 are correct.

Answer 1

The answer is 1, 2, 3 for the first question and 1,2,3 again for the second question.

Step-by-step 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.