Identify one specific molecule that will increase in concentration in the blood as a direct result of increased activity of the circulatory system during physical exersize

A male giraffe has 31 chromosomes in each of its sex cells. How many would be present in its body cells?

The fact that astronomers have observed billions of stars clustered together is evidence that - - A. stars must have some sort of attraction for each other. B. all sections of space have the same numbers of stars. C.

Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: 1. an allopatric barrier to reproduction. 2. a postzygotic barrier to reproduction. 3.

Which of the following is an example of an X-linked recessive disorder?. A. Methemoglobinemia. B. Sickle cell disease. C. Huntington disease. D. Color blindness

Which of the following is not true of meningoencephalitis? A. Involves infections of both the brain and meninges B. Most common causative organism is Entamoeba histolytica C.

Which of the following is true about gene duplications? O If a gene is duplicated, another copy gets deleted. O Gene duplications create an identical or similar second copy of a gene. O Gene duplications can only happen in plants, not in animals.

Explain incomplete dominance using snapdragon flowers as an example. Free answer

Indicate if the given direction of lymph flow is correct or incorrect. A) Lymphatic capillaries to collecting vessels B) Lymph nodes to lymph capillaries C) Collecting vessels to lymphatic trunks D) Collecting ducts to collecting vessels E) Thoracic

How are important properties of mercury venus and mars different from important properties of earth?

Jon likes hiking. He observes that whenever he hikes up a hill he breathes heavier than when he is on flat ground. Which 2 statements explain why this happens?