The head ectoderm is competent to respond to the paracrine factors made by the optic vesicles & induced to form the lens of the eye.

TLS Online TPP Program

#Id: 7841

#Unit 1. Molecules and their Interaction Relevant to Biology

Isomers that have opposite configurations at one or more of the chiral centers but that are not mirror images of each other are called diastereomers

TLS Online TPP Program

#Id: 7842

#Unit 1. Molecules and their Interaction Relevant to Biology

Two sugars that differ in configuration at only one chiral center are described as epimers.

TLS Online TPP Program

#Id: 7843

#Unit 1. Molecules and their Interaction Relevant to Biology

d-mannose and d-talose are epimers and d-glucose and d-mannose are epimers, whereas d-glucose and d-talose are not epimers but merely diastereomers

TLS Online TPP Program

#Id: 7844

#Unit 1. Molecules and their Interaction Relevant to Biology

Linear form of glucose (and other aldohexoses) could undergo a intramolecular reaction to form a cyclic hemiacetal.

TLS Online TPP Program

#Id: 7845

#Unit 1. Molecules and their Interaction Relevant to Biology

Isomers of monosaccharides that differ only in their configuration about that asymmetric carbon atom are called anomers, designated as a or b,

TLS Online TPP Program

#Id: 7846

#Unit 1. Molecules and their Interaction Relevant to Biology

When the anomeric hydroxyl of a D-hexose is on the same side of the ring as C-6, the structure is β a by definition; when it is on the opposite side from C-6, the structure is α.