Examlex
Which of the following are properties of steroid hormones?
I.Steroid hormones are lipid soluble and easily cross the phospholipid bilayer.
II.Steroid hormones usually exert their effects on target cells through membrane receptor proteins.
III.Steroid hormones act on cells close to where they were produced.
IV.Steroid hormones regulate gene transcription by binding to intracellular receptor proteins.
Anionic Nucleophiles
Negatively charged species that donate an electron pair to electrophiles in chemical reactions.
Polar, Aprotic Solvents
Solvents that possess a dipole but do not have an acidic hydrogen, often used in organic synthesis.
Nucleophilicity
A property of chemical species that reflects their tendency or ability to donate an electron pair to an electrophile to form a chemical bond.
Basicity
A measure of the ability of a compound to accept protons.
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