The chemical signals that carry nerve signals across a synaptic cleft are called Select one: a. neurochemicals. b. synaptic transmitters. c. neurotransmitters. d. proteins. e. phospholipids.

The correct answer is c. neurotransmitters.<br /><br />Neurotransmitters are the chemical signals that carry nerve signals across a synaptic cleft. They are released from the presynaptic neuron and bind to receptors on the postsynaptic neuron, allowing for communication between neurons. Neurotransmitters play a crucial role in transmitting information throughout the nervous system and are involved in various physiological and psychological processes.