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






2. 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.






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






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






5. The vocal cords are found in the larynx.






6. Must be present for photosynthesis to occur - it is not used up in the process.






7. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






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






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






10. 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.






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






12. Are the monomers that form nucleic acids - containing a sugar - phosphate group - and a nitrogenous base.






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






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






15. A suffix meaning 'to break apart.' O || ||






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






17. Decomposition of living matter for consumption.






18. 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






19. 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.






20. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






21. Is found on the stem between nodes.






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






23. What phylum are snakes in?






24. Is disorganized - unravelled - DNA with histones attached.






25. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






26. 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.






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






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






29. 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.






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






31. 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.






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






33. Some energy is lost as heat and becomes unusable.






34. The phylum of insects (bees).






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






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






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






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






39. 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.






40. Are the organelles where cellular respiration occurs.






41. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.






42. The individual we recognize as an adult fern.






43. Is composed of a double layer (bilayer) of phospholipids with protein globules imbedded within the layers. The construction of the membrane allows it to aid the function of the cell by permitting entrance and exit of molecules as needed by the cell.






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. 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).






46. In DNA Guanine pairs with...






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






48. The systematic search for individuals with a specific genotype in a delineated population.






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






50. There was extensive radiation of fish during the Devonian and Silurian periods within the Paleozoic Era.






Can you answer 50 questions in 15 minutes?



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