What are the two main energy-absorbing and energy-releasing reactions that occur in cells? A) chemosynthesis and photosynthesis
B) photosynthesis and respiration
C) respiration and chemosynthesis
D) endocytosis and exocytosis

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.

Describe the two types of vascular tissue

Which statements best describe the atoms of the gas neon? check all that apply