Recent advances in molecular techniques have allowed scientists to successfully extract proteins and dna fragments from extinct animals found in museum collections or the recent fossil record. in the near future, it may be possible to clone previously extinct organisms such as mammoths. what are your opinions on cloning extinct species?

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.