The process in which an animal’s cells use oxygen and digested food molecules to release the energy in food is called
a. breathing
b. cellular respiration
c. diffusion
d. gas exchange

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

The structure that houses the cells genetic information.

The climate on the leeward side of a mountain differs from that on the windward side mostly in