The resting membrane potential of a typical neuron is approximately -70 mV. This negative charge inside the cell is primarily maintained by the: MCQ with Answer and Explanation

Explanation:
The liver continuously synthesizes bile, which is essential for fat emulsification. The pancreas acts as both an exocrine and endocrine gland; its Islets of Langerhans produce insulin and glucagon. The gall bladder only stores, concentrates, and releases bile; it does not produce any digestive enzymes. Thus, statements 1 and 2 are correct.

Explanation:
Spermatogenesis is the production of haploid spermatozoa from diploid spermatogonia in the seminiferous tubules of the testes. Oogenesis is egg production, gametogenesis is the general term for both, fertilization is fusion.

Explanation:
The nephron is the structural and functional unit of the kidney, responsible for filtration, reabsorption, and secretion to form urine. Each kidney has about 1 million nephrons. A nephron consists of the Bowman's capsule, glomerulus, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct. Neurons are units of nervous system, alveoli of lungs, hepatocytes of liver.