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






2. What phylum are snakes in?






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






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






5. 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.






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






7. 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.






8. Occurs when an individual from an adjacent population of the same species immigrates and breeds with a member of a previously locally isolated group - resulting in a change in the gene pool.






9. 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.






10. All store energy within their chemical bonds.






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






12. Carbon - Hydrogen - Oxygen - and Nitrogen






13. 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.






14. Synthesis






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






16. Controls balance and muscle coordination






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






18. The sharp boundary of an ecosystem.






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






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






21. Cleave strands of DNA segments at certain sites.






22. Can be accounted for by the theory of punctuated equilibrium. The fossil record shows periods of stability with regard to appearance and disappearance of species as well as periods of sudden change.






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






24. Contains many genes and is a structure comprised of linear DNA and associated proteins.






25. 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.






26. The individual we recognize as an adult fern.






27. 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.






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






29. Covers and protects the leaf.






30. This is a carboxyl group and is the signature group found within organic acids.






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






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






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






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






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






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






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






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






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






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






41. 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.






42. 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).






43. Refers to the birthrate of a population.






44. 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.






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






46. The total amount of genetic information available for a given species.






47. The phyla composed of segmented worms.






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






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






50. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).