Biology Quiz 4

Warm-blooded animals are the animals which can maintain a body temperature higher than their environment. Mammals and birds are warm-blooded. Dolphins, whales, seals, sea lions, and otters are all mammals. Some examples of warm-blooded are whales, dogs, lions, cats, vultures, and raccoons. Reptiles, insects, and fish (amphibians) including snakes, lizards, turtles and crocodiles are cold-blooded.

Omega-3 and 6 fatty acids are also called essential fatty acids. Coconut oil does not contain essential fatty acids. It is a highly beneficial healthy fat but does not actually contain Omega fatty acids. Sunflower oil, Mustard oil and Groundnut oil contain essential fatty acids.

There are two main types of cholesterol: low-density lipoprotein (LDL), or “bad” cholesterol, and high-density lipoprotein (HDL), or “good” cholesterol. HDL cholesterol is considered to be the best cholesterol because it helps remove other forms of cholesterol from the bloodstream.

Darwin's finches are a group of about 18 species of passerine birds. Darwin's finches are the classic example of adaptive radiation, the evolution of groups of plants or animals into different species adapted to specific ecological niches.

Carotenoids are pigments in plants, algae, and photosynthetic bacteria. These pigments produce bright yellow, red, and orange colours in plants, vegetables, and fruits.

Foramen Magnum (also called great hole) is an aperture found in the skull. It is a large, oval-shaped opening in the occipital bone of the skull.

According to WHO, the Bird Flu virus cannot be transmitted through food cooked beyond 70 degrees Celsius.

Testosterone is the primary sex hormone in males. It plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

A heart murmur is a blowing, whooshing, or rasping sound heard during a heartbeat. The sound is caused by turbulent (rough) blood flow through the heart valves or near the heart. It is usually due to defective valves.

Noble gas (inert gases) are odorless, colourless, and have a very low reactivity rate. The six naturally occurring noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radioactive radon (Rn). Radon due to its radioactive nature is used in the treatment of cancer (Radiotherapy).