Which of the following has a mass of 40.0 g?
a 1.34 x 1024 molecules H2O
b 2.22 mol H2O
c 1.51 x 1024 atoms o
d all of the above

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

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.

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?