The blood of a normal healthy adult rat contains 5 million red blood cells (rbcs) per microliter of blood. each deciliter of blood contains 15 grams of hemoglobin. each rbc contains 250 million molecules of hemoglobin (a fairly close approximation for a healthy adult retired breeder female rat). suppose you have 9.96 ml of blood drawn from a healthy female retired breeder rat, then how many rbcs are in this blood sample?

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Whay is the following best defines climate