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






2. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






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






4. Is the outermost layer of cells of the stem.






5. 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.






6. What phylum are snakes in?






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






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






9. Controls hunger and thirst






10. High temperatures






11. 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.






12. The phyla of sponges.






13. All store energy within their chemical bonds.






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






15. The physical place where a particular organism lives. It must include all the factors that will support its life and reproduction.






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






17. Energy transformations that occur as chemicals are broken down or synthesized within the cell.






18. 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.






19. 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






20. Is comprised of all the organisms that interact within a given ecosystem whether or not it is at carrying capacity.






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






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






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






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






25. Provide rigidity to plant cells (and some bacteria) and are not found within animal cells.






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






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






28. The sharp boundary of an ecosystem.






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






30. Is a phylum that contains sponges.






31. Cleave strands of DNA segments at certain sites.






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






33. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






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






35. 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).






36. 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.






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






38. Refers to the birthrate of a population.






39. Is a compound fruit that develops from many ovaries of a single flower fusing together (raspberry).






40. Protein synthesis






41. An orienting response to light.






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






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






44. Decomposition of living matter for consumption.






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






46. Allows for the genetic code to be preserved in future generations of cells.






47. Niche






48. 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






49. Disease causing






50. Absorb a photon of light and is found in the grana of the chloroplast.