Explain in detail how the following systems are connected. What are some common parts/functions. How do the two systems connect with one another and support one another. 1) Respiratory System and Excretory System: 2) Circulatory System and Digestive System: 3) Digestive System and Excretory System:

If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype

What is the starting point in replication called

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?