The two primary factors that normally determine the level of blood pressure are:
a. the blood concentration of l-nmma and norepinephrine.
b. the cardiac output and the resistance to blood flow.
c. the blood volume and the amount of l-arginine in the diet.
d. the heart rate (heartbeats/minute) and the cardiac stroke volume.

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel

Which observation supports the inference that humans and chimpanzees share a common ancestor

Amembrane protein is made and inserted into the membrane of the rough endoplasmic reticulum. a binding site that is present in this protein is aligned so that it faces the lumen of the er. if this protein is then moved to other endomembranes, at which surface of the membranes given below is this binding site unlikely to be found? a. internal face of the golgi apparatus membranes b. the internal face of lysosome membrane c. facing the intermembrane space of the nuclear envelop membranes d. the lumen face of the vesicle just derived from the golgi apparatus e. the cytosolic face of the plasma membrane