Oxygen Binding Is Monitored for a Solution of Hemoglobin

question 8

Multiple Choice

Oxygen binding is monitored for a solution of hemoglobin.During the experiment,the curve changes from sigmoidal to hyperbolic.Which of the following may be the reason for the change?

• A) A positive allosteric effector was added.
• B) A negative allosteric effector was added.
• C) The protein dissociated into individual subunits.
• D) The protein denatured.

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Definitions:

Soma

In biology, the body of an organism as distinct from its reproductive cells; in neuroscience, the cell body of a neuron.

Nucleus

The central and most important part of an object, movement, or group, forming the basis for its activity and growth.

Dendrites

Branch-like extensions of neurons that receive electrical messages from other nerve cells.

Efferent Nerves

Nerve fibers that carry signals away from the central nervous system towards the muscles to cause movement.