Biology Quiz 5

In the fasting state, bears begin urea recycling and start losing fat tissue, although they retain their lean body mass. Such a medicine might be effective in treating obesity, as well as type II diabetes associated with it.

Darwin defined evolution as “descent with modification,” the idea that species change over time, give rise to new species, and share a common ancestor. According to Darwin's Theory of Evolution, long necks in giraffes arose because of a constant attempt to reach leaves on tall trees, generation after generation.

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.

Pheromones are chemicals released by one species of animals in order to attract the other members of the same species. They are capable of acting like hormones outside the body of the secreting individual, to affect the behavior of the receiving individuals.

Vermicomposting is done by worms. It is the process by which worms are used to convert organic materials (usually wastes) into a humus-like material known as vermin-compost.

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.

Trypanosomiasis, also known as sleeping sickness, is caused by microscopic parasites of the species Trypanosoma brucei.

Typhoid is not transmitted via blood transfusion. It is a highly contagious disease that's mostly spread through fecal contamination of food and water.

An artificial ecosystem is not self-sustaining, and the ecosystem would perish without human assistance. An aquarium is an artificial ecosystem. In aquarium, all the factors are regulated according to choice. These factors are type of species, food, sunlight and temperature, etc. Without humans, this ecosystem could not sustain itself.

The concentration of hemoglobin in blood is decreased in anemia. Hemoglobin is a protein in red blood cells that carries oxygen to the body's organs and tissues and transports carbon dioxide from your organs and tissues back to your lungs. If a hemoglobin level is lower than normal, it means a low red blood cell count (anemia).