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






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






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






4. An orienting response to light.






5. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






6. When the water concentration inside and outside the cell is equal - It is said to be in an...






7. All store energy within their chemical bonds.






8. 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






9. 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.






10. Develops from the morula as a thin layer of cells surrounding an internal cavity.






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






12. Controls balance and muscle coordination






13. The destruction of gametes - (sex cells such as sperm and eggs).






14. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






15. Developed by the German scientists Schleiden and Schwann - States that all living things are made of cells - cells are the basic units of life - all cells come from pre-existing cells.






16. Mitochondria - they constitute the center of cellular respiration.

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






18. The phyla of round worms.






19. Is a phylum that contains sponges.






20. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






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






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






23. Occurs when two populations are geographically isolated from each other. Over time this results in the production of two separate species.






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






25. 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.






26. Are tubes constructed of a geometrical arrangement of microtubules in a pinwheel shape. Their function includes the formation of new microtubules - but is primarily to form the structural skeleton around which cells split during mitosis and meiosis.






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






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






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






30. In both living and non-living environments.






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






32. 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






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






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






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






36. 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.






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






38. The class composed of birds.






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






40. Cleave strands of DNA segments at certain sites.






41. Becomes available for erosion as undersea sedimentary rocks are up-thrust by volcanic activity - erosion releases it from rocks into streams where it combines with oxygen to form phosphates in lakes that are then absorbed by plants - it is recycled t






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






43. 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.






44. Digestive enzymes - hydrochloric acid - and gastric juices which aid in digestion. The mucous secreted by the stomach protects the stomach lining from the acids and juices.






45. The vocal cords are found in the larynx.






46. It secretes saliva which enters the digestive tract and aids the digestive process.






47. A cell will only remain stable if the surface area of the plasma membrane maintains a __________ with the volume of the cytoplasm.






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






49. Is weaker than ionic - covalent - disulfide - or double bonds.






50. Is the waxy protective outer coating of leaves.