Me with my biology hw- 1.) the basic unit from which cell membranes are constructed is a- cell walls b-free moving proteins c- phospholipid layer 2.) four glucose molecules are found in a cell and ten are found outside the cell. at equilibrium, how many glucose molecules would be found in a cell, assuming the glucose molecules can cross the cell membrane? a- 4 b- 7 c- 10 3.) the movement of water in or out of a cell is called: a- diffusion b- osmosis c- facilitated diffusion 4.) if a red blood cell is placed in pure, fresh water, the cell will: a- stay the same b- burst c- become darker 5.) which of the following would occur if a cell with 1% dissolved salt solutes is placed in a 10% salt solution? a- the cell would swell b- water would leave the cell c- the cell would burst

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.