Why can synthetic polymers be altered to create so many different kinds of materials?

they have a hydrocarbon backbone that can be chemically altered.

they have certain additives that react to form newer materials.

they have a low molecular weight that alter their composition.

Disinfection of impression materials is usually accomplished by a. sterilization with high heat. b. spray or immersion in a chemical disinfectant. c. sterilization with steam under pressure. d. allowing the impression to sit 24 hours in water until all the organisms die.

Abnormal softening of a gland is known as

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.