The normal pulse rate for humans is usually 60 to 100 beats per minute, however, there are certain medical conditions such as cardiac arrhythmia which may alter the normal pulse rate of an individual. Other influencing factors include your age, gender and fitness level.
Aldosterone is a hormone secreted by the adrenal cortex, and insulin is a peptide secreted by the pancreas. When aldosterone contacts a target cell, it binds to an intracellular receptor and migrates to the nucleus; insulin binds to extracellular receptors on the plasma membrane. What is the most likely reason for this difference? a. Aldosterone is hydrophilic and therefore must enter the aqueous environment of the cytoplasm to have an effect. b. Aldosterone is lipid-soluble and therefore easily crosses the phospholipid bilayer of the plasma membrane.
The aldol reaction is a means of forming carbonâcarbon bonds in organic chemistry. Discovered independently by Charles-Adolphe Wurtz and Alexander Borodin in 1872, the reaction combines two carbonyl compounds (the original experiments used aldehydes) to form a new Î²-hydroxy carbonyl compound. typical modern aldol addition reaction, shown above, might involve the nucleophilic addition of a ketone enolate to an aldehyde. Once formed, the aldol product can sometimes lose a molecule of water to form an Î±,Î²-unsaturated carbonyl compound. This is called aldol condensation.