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CLEP Biology

Subjects : clep, science, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.






2. The size of a cell is limited by the ratio of its surface area to volume.






3. Layer that will become the skin - some endocrine glands - and the nervous system.






4. Fossilized burrows from multicellular organisms begin to appear in the geological record approximately 700 million years ago during the Precambrian period. These multicellular animals had only soft parts and could not be fossilized.






5. The preservation of the integrity of genetic information from one generation to another.






6. Has extreme cold temperatures - low precipitation - modified grassland - perma-frost - a short growing season and some plants and animals.






7. Studied the relationships between traits expressed in parents and offspring and the genes that caused the traits to be expressed.






8. The phyla of round worms.






9. Are surrounded by capillaries that allow for carbon dioxide to diffuse into the lungs and oxygen to diffuse out.






10. The process of forming eggs and sperm cells in the reproductive organs.






11. Is a social behavior of an organism that is beneficial to the group at the individual's expense.






12. Assumes that there are periods of stability during which little evolutionary change occurs - and that speciation can occur rapidly over a very short period of time.






13. Is found on the stem between nodes.






14. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






15. Is the outermost of the three main layers of an embryo.






16. Is found in the root cap and is responsible for quick growth in the roots.






17. The large brain and upright posture of Homo Sapiens...






18. High temperatures






19. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






20. Are more closely related to Homo Sapiens than to other apes - but Homo Sapiens did not evolve from chimpanzees.






21. Contain one celled eukaryotes such as algae and protozoa.






22. Transfers water and does not require sieve plates to allow nutrients through.






23. May be ions or non-protein molecules - they are similar to cofactors - but differ in that they are tightly attached by covalent bonds to the enzyme - rather than being separate atoms or molecules.






24. An opportunistic life strategy strategy. Lichens invading a bare rock area after a volcanic eruption is an example.






25. Algae and Protozoa belong to the kingdom...






26. An enzyme is unaffected by the reactions it catalyzes






27. Inorganic phosphate






28. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






29. The solid mass of cells resulting from the cleavage of the ovum before the formation of a blastula.






30. Carbon - Hydrogen - Oxygen - and Nitrogen






31. The bronchi lead to the two lungs where they branch out in all directions into smaller tubules known as bronchioles.






32. Can be accounted for by the theory of punctuated equilibrium. The fossil record shows periods of stability with regard to appearance and disappearance of species as well as periods of sudden change.






33. Secretes insulin to lower blood sugar and maintain equilibrium. A person eats three candy bars. Within minutes this endocrine gland affects blood-glucose homeostasis.






34. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






35. Is a compound fruit that forms from several ovaries of separate flowers that fuse together during ripening (strawberry - or pineapple).






36. An orienting response to light.






37. Most chemical pollutants accidentally ingested by humans are __________ - mixed with broken down pigments in the bile - then bile is secreted into the small intestine - proceeds to the large intestine - and is expelled in the feces.






38. Is an abundant element found in protoplasm. Together with oxygen - hydrogen - and nitrogen - it composes over 90% of cellular structure.






39. The pituitary gland.






40. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






41. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






42. The phyla composed of segmented worms.






43. Are cells involved in immunity and are produced in bone marrow as stem cells.






44. Is the major component of sand and is the most abundant element found in the lithosphere. It is not recycled.






45. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






46. The lineage that led to the modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.






47. Super-class of vertebrae including organisms with jaws.






48. Is composed of an anterior and posterior lobe. The stalk of the lobe is connected to the hypothalamus. Antidiuretic Hormone (AH) is produced in the hypothalamus and stored in the posterior pituitary. Upon nervous stimulation from the hypothalamus - t






49. The total amount of genetic information available for a given species.






50. Is the number of organisms that can be supported within a particular ecosystem.