The Ultimate Biology Quiz | Sci / Tech

Answer: chloroplasts

Autotrophs are organisms that can manufacture their own food;(plants and cyanobacteria). Heterotrophs are organisms that get their energy sources from other organisms.

Answer: barnacles

Between drafts of "On the Origin of Species" he wrote scholarly papers on the topic of barnacle systematics.

Answer: Jacobson's organ

The Jacobson's organ is located near the brain of the snake and receives scent molecules that are collected and captured by the tongue of the snake. Incidentally, forked tongue is a possible answer for this question, but, as any science teacher will tell you, it's not the best answer.

Answer: rattlesnakes

Rattlesnakes are members of the family of snakes known as pit vipers, for their heat-sensing pits on each side of the upper jaw. Vipers are classified into two groups: pit vipers and true vipers. Vipers are distinguished from other venomous snakes in that their fangs fold down when they close their mouths, unlike the elapids (cobras and mambas) whose fangs are permanently stationed at the front of the mouth.

Answer: The ear

The Incus is one of the three auditory ossicles, the Malleus and Stapes being the other two, that help change vibrational energy into electrical energy. They are more commonly called the hammer, anvil, and stirrup. The Incus is the anvil, the Malleus is the hammer, the Stapes is the stirrup.

Answer: Yersinia pestis

Borrelia burgdorferi is the bacteria that causes for Lyme Disease. Toxoplasma gondii is the causative agent for Toxoplasmosis, the reason pregnant women need to stay away from cats. Helicobacter pylori has been discovered as a possible cause of gastric ulcers. Bubonic Plague, also called Black Death, wiped out half the population of Europe in the 14th century.

Answer: decrease in capillary permeability

In an inflammatory response, capillary permeability INCREASES to allow infection fighting cells, and other molecules to migrate to the area of the infection or injury. There are typically four signs of inflammation: redness, swelling, warmth, and pain.

Answer: Vitamin B12

B12 is helpful in maintaining a healthy population of red blood cells, or erythrocytes. Best sources include meats, especially liver. B6 is known as Pyridoxine. They are part of the B complex group of vitamins.

Answer: systemic lupus erythematosus

Autoimmune disorders are dangerous situations in which the body's own immune system fails to recognize its own tissues and attacks them as if they were foreign bodies like bacteria or viruses. Pediculosis is a lice infestation. Diverticulitis is a condition in which a segment of the intestinal gets pinched off, forming a small appendix or pocket, which subsequently gets infected or inflamed. Erythroblastosis Fetalis is another term for Rh disease in which the mothers blood antigens attack the fetal blood, because they have different Rh factors on the surface of their blood cells.

Answer: Murine LD-50

LD-50 means the amount of venom that is a lethal dose in 50 percent of the administrations. Murine refers to mice, who are the test subjects for the measurements.