Memorize these and recognize 21.9% of all Biology clues.
| # | Answer | Count | Sample Clue |
|---|---|---|---|
| 1 | teeth | 8 | In reptiles these choppers are conical & uniform; in mammals they have various shapes & sizes |
| 2 | DNA | 8 | Its 2 coiled polynucleotide chains have opposite polarities |
| 3 | chlorophyll | 7 | It puts the green in greenery |
| 4 | amino acids | 7 | Building blocks of proteins |
| 5 | the stomach | 6 | Juices naturally occuring in this organ include hydrochloric acid & pepsin, but no orange |
| 6 | chromosomes | 6 | "Lettered" chromosomes which must appear in duplicate to determine female sex |
| 7 | the epidermis | 6 | In invertebrates, this outermost layer of the skin is usually only one cell thick |
| 8 | stem cells | 6 | Descendants of these cells, progenitor cells have their own medical potential but are more limited in what tissue they can become |
| 9 | the heart | 5 | In fish this organ has only 1 atrium & 1 ventricle |
| 10 | the nucleus | 5 | Cell division begins in this part of the cell, either by mitosis or by meiosis |
| 11 | the lungs | 5 | The visceral pleura is a thin, tough membrane that covers this pair of organs |
| 12 | the amoeba | 5 | This 1-celled protozoan gets its name from a Greek word meaning "change" |
| 13 | viruses | 4 | Discovered around 1915, bacteriophages are bacteria-eating types of these other tiny disease-causing agents |
| 14 | the shell | 4 | The umbo is the pointed center & oldest part of this part of a clam |
| 15 | the esophagus | 4 | A bird's crop is an expanded area of this muscular tube that serves as a temporary storage area for food |
| 16 | taxonomy | 4 | The science of naming & classifying organisms is called this, though the IRS has little to do with it |
| 17 | pollination | 4 | From the Latin for "fine powder", it's the process by which microscopic grains from one plant travel to another to fertilize it |
| 18 | oxygen | 4 | By definition an aerobe is an organism that lives only in the presence of this element |
| 19 | melanin | 4 | ( Sarah of the Clue Crew shows a cat on the monitor.) More common in white cats is something called heterochromia where one eye is blue & the other is... |
| 20 | insulin | 4 | Normally, when the glucose level in the blood is high, the pancreas secretes this hormone to lower it |
| 21 | fraternal twins | 4 | Dizygotic twins, which develop from 2 separate eggs, are better known by this "brotherly" name |
| 22 | cones | 4 | In plants, they're reproductive structures; in humans, light-sensitive structures along with the rods |
| 23 | cloning | 4 | The process of making a replica object from a single cell of the original |
| 24 | cellulose | 4 | Plant fiber from wood & other sources that is a primary material of rayon |
| 25 | capillaries | 4 | Some of these smallest blood vessels are so tiny that only one blood cell can pass through at a time |
| 26 | bacteria | 4 | ( Sarah of the Clue Crew takes a sponge out of a microwave oven.) Your microwave can be a weapon in the fight against germs; zapping a wet sponge in t... |
| 27 | the yolk | 4 | As opposed to bird eggs, human eggs have very little of this material in which nutrients are stored |
| 28 | the skin | 4 | Cutaneous respiration is an exchange of gases through this part of the body |
| 29 | the host | 4 | 4-letter word for an organism that provides sustenance to one or more parasites |
| 30 | water | 3 | Lipids are soluble in fat solvents & insoluble in this common liquid |
| 31 | the liver | 3 | The hepatic portal vein connects the intestine to this organ |
| 32 | the kidneys | 3 | In the human body the process of osmoregulatrion is primarilly carried out by these organs |
| 33 | the kidney | 3 | Renin, an enzyme that breaks down protein, is secreted by cells in this organ |
| 34 | symbiosis | 3 | This term refers to the association of 2 or more organisms living together for the possible benefit of all |
| 35 | spores | 3 | Ferns reproduce asexually by means of these cells |
| 36 | regeneration | 3 | An octopus can grow back a lost tentacle by this process |
| 37 | recessive | 3 | ( Jimmy of the Clue Crew presents the clue.) In genetics Yy stands for two genes; the capitalized Y is dominant & the lowercase one is this |
| 38 | platelets | 3 | Vital for blood clotting, there are about 250,000 of them per cubic millimeter of blood |
| 39 | plasma | 3 | ( Jimmy of the Clue Crew presents.) Blood has 4 main components: red blood cells that make up about 45% of the volume, white blood cells & platelets t... |
| 40 | photosynthesis | 3 | This reaction occurs in the chloroplasts, the oval-shaped green organelles in plants |
| 41 | meiosis | 3 | This process that occurs in specialized sex cells is also known as reduction division |
| 42 | leaves | 3 | The internodes on the stem of a cabbage plant are very short, so these are stacked close together |
| 43 | green | 3 | A large division of algae is the Chlorophyta, which are this color |
| 44 | gills | 3 | The Tiktaalik genus, transitional fossils from 380 mil. B.C., confusingly had elbows & wrists yet breathed with these, which had no covers |
| 45 | fungi | 3 | Ascomycetes, the largest class in this kingdom, includes edible types like truffles |
| 46 | fat | 3 | Adipose tissue beneath the skin is made of this |
| 47 | enzymes | 3 | Most of these catalysts are proteins that end with the letters -ase |
| 48 | clot | 3 | Vitamin K helps your blood do this when you're cut |
| 49 | cilia | 3 | These hairlike projections on protozoans are used for locomotion |
| 50 | tail | 3 | A scorpion's stinger is located in this part of its body |
These appear 8+ times. Memorize these first.
Jump to: Chemistry / Elements | Biology / Animals | Medicine / Health | Other | Math / Physics | Astronomy / Space