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Meselson-stahl's experiment provided evidence for the semi-conservative DNA replication hypothesis, given that 1st and 2nd bacteria cultures showed ratios of N14 and N15 in their DNA that followed that sp...

Proteins are produced at the ribosome. Ribosomes dock to the rER membrane on translocons and peptide is inserted into the rER lumen coupled with ATP hydrolysis. The peptide folds into its tertiary structu...

1. Pacinian corpuscle is stimulated by pressure on the skin. 2) This opens stretch mediated sodium ion channels. 3) Sodium ions leak into the sensory nerve axon via facilitated diffusion thereby causin...

A chemical called a neurotransmitter passes from one neurone to the next causing an electrical impulse.

- 2 strands:  Intertwine to form a double-helix structure                                                    Phosphodiester bonds between between phosphate group and pentose sugar of nucl...