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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. Plants and animals obtain usable nitrogen






2. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






3. Some patrol the blood for antigens - but are also equipped to destroy antigens. They may regulate immune responses as well.






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






5. Include: Vascular tissue - including both xylem and phloem - and sieve plates existing between cells of the stem.






6. When stems bend toward the light it is due to _____________ the hormone auxin - in response to light - migrates from the light to the dark side of the shoot tip. The cells on the dark side now contain more auxin - which causes the cells on that side






7. Consists of undifferentiated cells capable of quick growth and specialization. It is responsible for elongation of the stem.






8. The sharp boundary of an ecosystem.






9. Is more like branching out of a tree with dead ends and new branches appearing simultaneously than like steps on a ladder.






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






11. Small - green - heart-shaped gametophyte plant form of a fern that can make its own food and absorb water and nutrients from the soil






12. The phyla composed of segmented worms.






13. Is a packet of digestive enzymes that destroy cellular wastes.






14. Has extreme hot or cold temperatures - with very low precipitation - sandy or rocky terrain - sparse vegetation (mainly succulents) - small animals - rodents - and reptiles.






15. The process whereby cells build molecules and store energy (in the form of covalent chemical bonds).






16. Has loosely packed cells that allow for gas and moisture exchange.






17. Controls hunger and thirst






18. Produce seeds without flowers. They include conifers (cone-bearers) and cycads.






19. Nonvascular plants such as mosses which lack tissue for conducting food or water.






20. Process in which elements - chemical compounds - and other forms of matter are passed from one organism to another and from one part of the biosphere to another.






21. Some enzymes contain a __________ component that is essential to their functions.






22. High temperatures






23. Process of breaking down complex materials (foods) to form simpler substances and release energy.






24. Is a special protein that acts as a catalyst for organic reactions.






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






26. 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.






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






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






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






30. 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.






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






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






33. 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






34. Enzymes are usually __________ to certain reactions.






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






36. Is the earliest period of the Paleozoic era. Began with the Cambrian explosion - this explosion of life resulted in the representatives of most of the modern phyla being present.






37. Is a phylum that contains sponges.






38. 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.






39. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






40. Covers and protects the leaf.






41. 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.






42. Is a molecule that stores information for protein synthesis and genetic coding.






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






44. Controls olfactory lobes (smell)






45. States that where random mating is occurring within a population that is in equilibrium with its environment - the gene frequencies and genotype ratios will remain constant from generation to generation. It is a mathematical formula that shows why re






46. The transfer of electrons.






47. Is the waxy protective outer coating of leaves.






48. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






49. Niche






50. Contains the chromosomes and is the site of reproduction through mitosis and meiosis.







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