Which sexually transmitted disease is caused by the bacterium Treponema pallidum? MCQ with Answer and Explanation

Explanation:
A synapse is the junction where a nerve impulse is transmitted from one neuron to another. The synaptic cleft is the microscopic, fluid-filled gap between the presynaptic neuron (axon terminal) and the postsynaptic neuron (dendrite or cell body). Neurotransmitters are released into this cleft to carry the signal across to the next cell.

Explanation:
Penicillin targets the transpeptidase enzyme, blocking peptidoglycan cross-linking, leading to cell lysis. This is the mechanism, so R correctly explains A.

Explanation:
Carbohydrates are the body's primary and most efficient source of energy, broken down into glucose to fuel cellular activities. Proteins are essential macronutrients composed of amino acids, crucial for the growth, maintenance, and repair of body tissues, as well as forming enzymes and hormones. Fats are essential for numerous bodily functions, including providing concentrated energy, forming cell membranes, insulating the body, and absorbing fat-soluble vitamins. Thus, statements 1 and 2 are correct.