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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. The cells of a developing embryo (at the gastrula stage) differentiate into layers - that will later develop into different tissues and organs - including the mesoderm - ectoderm - and endoderm.






2. A length of DNA (with corresponding histones) is responsible for the production of a certain protein that causes a particular trait to be expressed in an organism.






3. Decomposition of living matter for consumption.






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






5. The class composed of birds.






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






7. Where protein synthesis occurs. They float unattached in the cytoplasm. They contain RNA that is specific to their function in protein formation.






8. Protein synthesis






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






10. Veins in the leaf and are also distributed throughout the stem






11. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






12. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






13. Is a kind of plain characterized by a warm climate - grassland - and seasonally dry climate conditions.






14. Super-class of vertebrae including organisms with no jaws.






15. Is when expression of genetic traits is determined by weather the trait is inherited from the mother or the father.






16. A hydrogen bond involves the ________________ and can be easily broken.






17. Is a coenzyme required in the synthesis of collagen.






18. Is the organelle where cellular reproductive processes occur.






19. Is a phylum that contains jellyfish - hydra - etc.






20. Ended with the extinction of the dinosaurs.






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






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






23. Are formed when the plasma membrane of a cell encloses a molecule outside the membrane - then releases a membrane bound sack containing the desired molecule into the cytoplasm. This process allows the cell to absorb molecules that are larger in size






24. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






25. High temperatures






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






27. 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.






28. Fruits that develop from a single ripened ovary (apple - olive - acorn - cucumber).






29. The phylum of insects (bees).






30. Niche






31. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






32. Carbon - Hydrogen - Oxygen - and Nitrogen






33. 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.






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






35. Covalent bonds






36. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






37. The number of organisms in a given community - can be above or below the carrying capacity.






38. Includes all living and nonliving components of the Earth to support living things.






39. Plants and animals obtain usable nitrogen






40. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






41. Is the sugar that lactase acts upon.






42. The most recent and present era. It includes the radiation of flowering plants - the angiosperms.






43. Is the process that releases energy for use by the cell.






44. Channels is cell membranes that carry water between cells.






45. The sharp boundary of an ecosystem.






46. Engages in both passive and active transport.






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






48. A reaction that adds water to another compound. (2 hydrogens - 1 oxygen).






49. Controls sensory and motor responses - and controls memory - speech - and intelligence factors.






50. The pharynx is between the nasal passage and the trachea. Air passes into the body via the nasal passage - then passes through the pharynx and on to the trachea.