Biology Quiz 4

Normally, each cell in the human body has 23 pairs (46) of chromosomes (Half come from the mother and the other half come from the father). Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.

Fat produces the highest amount of energy upon oxidation. It is the slowest source of energy but the most energy-efficient form of food. Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates.

In male sharks, two claspers are found attached to the Pelvic fin. The claspers are simply a modified portion of the pelvic fin, and since there are two pelvic fins, there are two claspers.

Due to Vitamin D deficiency, the limb bones of children become bent. Vitamin D deficiency can cause children to get rickets. Rickets is a disease that causes thin, weak and deformed bones. In adults, not having enough vitamin D and calcium causes osteoporosis (loss of bone density) and can lead to fractures.

A glass snake (glass lizard) is a long, slender, legless lizard that superficially resembles a snake but is not a true snake. It has no legs but is not a snake, making it a unique and interesting member of the reptile kingdom.

Hashish is a drug made by compressing and processing parts of the cannabis plant, typically focusing on flowering buds (female flowers) containing the most trichomes.

Fat has more than twice as many calories per gram as carbohydrates and proteins. A gram of fat has about 9 calories, while a gram of carbohydrate or protein has about 4 calories.

Locked jaw disorder is the other name of the disease Tetanus. It is a serious bacterial infection which affects the muscles and the nervous system throughout the body. This infection often affects the muscles of the neck and jaw, but eventually spreads to the rest of the body.

Thyroid gland uses iodine to make thyroid hormones, which help control growth, repair damaged cells and support a healthy metabolism.

Whale, Bat, Kangaroo and Hippopotamus belong to the class Mammalia. Penguins and Ostrich are a group of aquatic flightless birds not belonging to the class Mammalia.