Which factor divides freshwater ecosystems into two main types?

Which statement is true of the genetic material in viruses? It can be DNA or protein. It changes very slowly. It can be DNA or RNA. It is larger than cellular DNA.

A neoplastic intraocular disease found primarily in children is

A pet store has two guinea pigs. One has white fur and the other has black fur. The white guinea pig has two recessive alleles for fur color. The black guinea pig has one dominate allele and one recessive allele for fur color.

What kind of organisms make up a food web

Among donna's favorite foods are hot dogs and the traditional cured ham featured in her mother's sunday dinners. what type of cancer is associated with high intakes of donna's favorites

Polypeptides and proteins must fold properly to be functional. Hydrogen bonds between the oxygen and nitrogen atoms of the peptide bonds are crucial to which level of protein structure?1. primary structure2. tertiary structure3. secondary structure4.

A particular gene can have two forms, called alleles. which statement best describes the difference between the dominant allele and the recessive allele? (a) only the recessive allele is expressed when both alleles ate inherited.

Which of the following produce intrinsic factor? A. parietal cells B. zymogenic cells C. mucous neck cells D. enteroendocrine cells

What type of macromolecules is insulin

The one-toed horse of today steadily evolved from its five-toed ancestor. Which theory of evolution can explain this example?