Which of these is the correct order through which oxygen enters the body?
a. blood, alveoli, lungs, bronchi, bronchioles
b. lungs, bronchi, bronchioles, blood, alveoli
c. bronchi, lungs, bronchioles, alveoli, blood
d. lungs, bronchi, bronchioles, alveoli, blood

Differences between compact bone and cartilage

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

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.