1. Which of the following is garding the function of membrane proteins: A) Enzymatic activity B) Receptors for signal transduction C Neurotran smitters relea se D) Transport E) Attachment to the cytos keleton and extracellular matrix

The correct answer is:<br /><br />A) Enzymatic activity<br />B) Receptors for signal transduction<br />D) Transport<br />E) Attachment to the cytoskeleton and extracellular matrix<br /><br />Explanation:<br />Membrane proteins serve various functions, including enzymatic activity, acting as receptors for signal transduction, facilitating transport, and attaching to the cytoskeleton and extracellular matrix. Neurotransmitters are not membrane proteins; they are chemical messengers that transmit signals across a synapse from one neuron to another.