Why might scientists use computer models in research instead of conducting an experiment on the real system they would like to study?

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Nh3 +02-no + h20 is unbalanced what is the balanced equation

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.