Which is true of genes? plz asap a) they are proteins that produce sections of dna which control the cells activities b) they are sections of dna that produce the proteins that control an organisms characteristics c) they are the same as traits which show up in an organism if they are dominant d) they are features that can be observed rather than measured

What does homeostasis means in biology?

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from