Biology MCQs

Notes:
Vitamin E is a series of organic compounds consisting of various methylated phenols. Because the vitamin activity was first identified in 1936 from a dietary fertility factor in rats, it was given the name “tocopherol” or birth carrying vitamin.
There are eight forms of Vitamin E. In general, food sources with the highest concentrations of vitamin E are vegetable oils, followed by nuts and seeds including whole grains. 

Notes:
Hydrophobia which is also known as Rabies is a viral disease that causes inflammation of the brain in humans and other mammals. Some of the early symptoms can include fever and tingling at the site of exposure.

Notes:
Polycythaemia is a disease related to Red Blood Cells. It refers to an increase in the number of red blood cells in the body which cause the blood to be thicker, and this, in turn, increases the risk of other health issues, such as blood clots.

Notes:
The pitcher plant is characterized as insectivorous. Pitcher plants are several different carnivorous plants. They have modified leaves known as pitfall traps which is a prey-trapping mechanism featuring a deep cavity filled with digestive liquid.

Notes:
Correct answer is beta-amylase. Regarding amylase there is an interesting fact that it has proved its role in Human evolution. The salivary amylase levels found in the human lineage are six to eight times higher in humans than in chimpanzees, which are mostly fruit eaters and ingest little starch relative to humans.

Notes:
The term Elasmobranches is a collective name for the sharks, skates and rays. Elasmobranches have a skeleton made of cartilage, no swim bladders and rough skin made up of small dermal dentils. Elasmobranches are renowned for their highly tuned senses.

Notes:
The main product of photosynthesis is glucose, which is the molecule that produces energy to run the processes of the cell. Oxygen is mainly a byproduct of the process of photosynthesis. Six molecules of carbon dioxide and six molecules of water are needed to produce one molecule of glucose.

Notes:
Iron is also found in many plant-based foods such as:
• Green vegetables, for example spinach, silverbeet and broccoli
• Lentils and beans
• Nuts and seeds
• Grains, for example whole wheat, brown rice and fortified breakfast cereals
• Dried fruit

Notes:
The retina is a thin membrane which covers the inside back of the eye. Like film in a camera, the retina is the light-sensitive surface where images from the outside world come to a focus.

Notes:
Adipose tissue is an anatomical term for loose connective tissue composed of adipocytes. Its main role is to store energy in the form of fat, although it also cushions and insulates the body.