Biology Quiz 6

Sleeping sickness is caused by microscopic parasites of the species Trypanosoma Brucei. It is transmitted by the tsetse fly (Glossina species).

Haliotis belongs to Mollusca. Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. It is sluggish invertebrates, with a thin fleshy envelope or mantle covering the visceral organs. Molluscs include mussels, scallops, oysters, periwinkles, whelks, squid, clams, snails, haliotis and octopus.

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.

Molybdenum deficiency affects the activity of nitrate reductase. Without sufficient molybdenum plants accumulate nitrate in their leaves, but cannot use it to make proteins for normal growth. The plant becomes stunted and the leaves show symptoms of nitrogen deficiency, appearing pale green or yellowish-green in colour between the veins.

The femur (thigh bone) is the longest, largest and strongest bone in the human body. It is almost 19.9 inches long. Tibia (lower leg bone) is the second-longest (16.9 inches) bone in the human body.

colour blindness, inability to distinguish one or more of the three colours red, green, and blue. A man with colour blindness will see red as Green.

Jaundice is caused due to infection of the liver. It happens when there's too much bilirubin, a yellow-orange substance, in your blood. Jaundice may occur if the liver can't efficiently process red blood cells as they break down.

The rhizomes of ginger are considered as stems and not as roots as it contains nodes and internodes.

Urease was the First Crystalline Enzyme and the Proof That Enzymes Are Proteins. The isolation and crystallization of urease by James Sumner, in 1926, provided a breakthrough in early enzyme studies.

Competition for food, light and space is most severe in closely related species growing in the same area or niche. It is most severe in closely related species growing in the same habitat as these species will have the same niche, type of food they eat and same characteristics, etc.