How long do human red blood cells circulate in the blood before they wear out and have to be replaced?

When glucose is being used up and not replaced from food intake, the blood sugarlevel canbe maintained by synthesizing glucose from smaller molecules such as pyruvate or lactate. this process is called gluconeogenesis.

A man goes swimming in a pond. As he swims, which reaction provides energy to power his muscles? A.) ATP regenerates from ADP using energy in glucose. B.) The ADP molecule adds a phosphate group and produces ATP. C.

Are organisms within rainforest food chains are interchangeable?

Two solutions that are the same solute concentration.

One is similar with the other about malaria prevention method A. use net B. use DDT C. use anti parasite drug D. drain standing water l wanna to know the answer but l need more explanation so don't write the answer only,

Using a food label, explain what each section will tell you and why that would be important to, say, a long-distance runner. Subject: Anatomy

In the fall, some farmers plow the remains of corn plants into the ground. This activity contributes most directly to the (1) increase in the biodiversity of their fields (2) depletion of nonrenewable resources (3) destruction of natural habitats

The ___ ventricle pumps blood to the pulmonary circuit, while the ___ ventricle pumps blood into the systemic circuit.

In what ways are mosses liverworts in the hornworts words similar

Carbon-14 has a half life of 5,770 years. A fossil was found that had 1/32 of its original Carbon-14 remaining. How old is the fossil?