Tryptophan is an amino acid . What bio molecule uses amino acids as a building block ? A - carbohydrate
B - protein
C - nucleic Acid
D - lipid

What would be an example of hypothesis for goldfish respiration lab

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

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.