How many π bonds are present in the molecule shown? 
Definitions:
Cleavage
The division of cells in the early embryo following fertilization, leading to the formation of a multicellular organism.
Gastrulation
A phase early in embryonic development during which the single-layered blastula reorganizes into a multilayered structure, forming the embryonic germ layers.
Blastulation
An early stage in embryonic development that results in the formation of a blastula, a sphere of cells surrounding a fluid-filled cavity.
Gray Crescent
An area that appears on the surface of amphibian eggs following fertilization, indicating where the dorsal side of the embryo will develop.
Q19: When 2,4-dinitrochlorobenzene is treated with sodium hydroxide
Q26: Give an IUPAC name to the following
Q36: When orbitals on different atoms interact, _
Q37: Provide the structure of the monomer from
Q52: Provide the proper IUPAC name for PhCH<sub>2</sub>CH(CH<sub>3</sub>)CH<sub>2</sub>CH<sub>2</sub>CHO.
Q56: Draw the Haworth structure of ethyl β-D-galactopyranoside.
Q72: An optically active D-aldopentose produced an optically
Q78: Draw the structure of poly(acrylonitrile).
Q126: Which of the following best describes the
Q132: List the following bromides in order of