Biology and Science Quiz

Orville and Wilbur Wright are credited with inventing and flying the first successful airplane in 1903.

Anatomy is the study of the structure and internal organization of living things. Physiology studies functioning, ethology studies behavior, and histology studies cells and tissues.

Seismology is the scientific study of earthquakes and the propagation of elastic waves through the Earth. Ecology studies organism-environment relationships, and numismatics studies coins.

Ecology is the study of the relationships between organisms and their environment. It does not focus exclusively on birds, cell formation, or tissues.

Meteorology is the scientific study of the atmosphere and weather phenomena, not meteors (which fall under astronomy), metals, or earthquakes.

Oncology is the branch of medicine that deals with the study and treatment of cancer. Ornithology studies birds, mammalogy studies mammals, and pedology studies soil.

Exobiology or astrobiology is the study of potential life beyond Earth. The prefix 'exo-' means 'outside' or 'external'.

Ornithology is the branch of zoology that studies birds, including their behavior, physiology, and classification. It is distinct from osteology (study of bones) or osmology (study of smells).

Normal human body temperature is 36.9°C (98.6°F), which is the standard baseline for human health. Option C (98.6°C) incorrectly uses the Fahrenheit numerical value but labels it as Celsius.

Vitamin K is essential for blood clotting as it helps produce clotting factors in the liver. Unlike B1, B2, or D, which have different roles (energy metabolism, skin health, calcium absorption), K directly enables coagulation.

A normal adult human has 5-6 liters of blood, which is approximately 7% of body weight. This volume supports oxygen transport and circulation; higher ranges (8-12L) would exceed normal physiological limits.

Red blood cells are formed in the bone marrow through erythropoiesis. This process occurs primarily in the spongy bone tissue of flat bones like the sternum, pelvis, and ribs, not in the liver, kidneys, or heart.

An adult human has 206 bones, compared to approximately 300 at birth. The reduction occurs because many bones fuse during growth and development, particularly in the skull and spine.

The pancreas secretes insulin, a hormone that regulates blood glucose levels. This is distinct from bile juice (produced by liver) or peptic juice (produced by stomach), highlighting the pancreas's unique endocrine function.

The cerebrum is the largest part of the human brain, making up about 80% of its mass. It handles higher cognitive functions like thinking, language, and sensory processing, unlike the smaller cerebellum or medulla.

Bones and teeth are primarily composed of calcium phosphate in the form of hydroxyapatite. This mineral compound provides structural rigidity, unlike calcium carbonate (shells), calcium sulfate, or calcium nitrate.

Hemoglobin's key component is iron, which enables it to bind and transport oxygen. Each hemoglobin molecule contains four iron atoms that give blood its red color and allow efficient oxygen delivery throughout the body.