Biology

The question asks about the volume of blood pumped by the human heart with each contraction, which is known as the stroke volume and is typically measured in milliliters (mL), not centimeters (cm). The average stroke volume is about 70 mL, so none of the given options with units in cm are correct. Therefore, 'None of these' is the correct answer.

Alexander Oparin proposed the theory of chemical evolution, suggesting that life originated from simple organic compounds through gradual chemical processes on early Earth. The other options are incorrect or irrelevant to this theory.

The small intestine is the primary site for the absorption of nutrients from digested food due to its large surface area and specialized structures like villi and microvilli. The large intestine mainly absorbs water and electrolytes, while the liver processes nutrients but does not absorb them from food.

Edward Jenner is credited with inventing the smallpox vaccine in 1796 by using material from cowpox lesions to create immunity to smallpox. This was the first successful vaccine developed.

Adult butterflies, like all insects, have six legs. This is a defining characteristic of insects, distinguishing them from other arthropods.

Angina is a form of heart disease characterized by inadequate blood supply to the heart muscle, causing chest pain. The other options refer to unrelated conditions: Hepatitis affects the liver, Alopecia is hair loss, and Pericarditis is inflammation of the heart's outer lining.

The word 'dinosaur' comes from the Greek words 'deinos' meaning 'terrible' and 'sauros' meaning 'lizard', thus 'terrible lizard'. None of the other options have names derived from these Greek words.

Reindeer (also known as caribou) are unique among deer species because both males and females grow antlers, unlike most other deer species where only males have antlers.

Male mosquitoes do not feed on blood; instead, they feed on nectar and other plant sugars for energy. Only female mosquitoes suck blood to obtain proteins necessary for egg development.

Sea urchins primarily feed on seaweed and other types of algae. They use their specialized mouthparts to scrape algae off rocks and surfaces in their marine environment.