Plants have systems and structures that help them maintain homeostasis - water or nutrient balance , gas exchange . Explain the systems and structures and how they are used by the plant to maintain homeostasis .

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.

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism