Proteins are called the building blocks of the body. they’re needed for growth and development and to repair the normal wear and tear of the body. the body needs to digest proteins to make them available to fulfill these functions. arrange the steps of the digestion of proteins in the correct order. 1) amino acids enter the bloodstream and are circulated throughout the body. 2) amino acids are absorbed by the capillaries in the jejunum. 3) in mechanical digestion, the teeth grind food and break it in to smaller parts. 4) churning and the enzyme pepsin break down protein in the stomach. 5) trypsin and chymotrypsin act on the proteins to break them down in the duodenum. 6) the pancreas releases the enzymes trypsin and chymotrypsin.

hello which   of the following there is nothing!

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!