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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. Is a substance that changes the speed of a reaction without being affected itself.






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






3. The individual we recognize as an adult fern.






4. Is found on the stem between nodes.






5. 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).






6. 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.






7. 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.






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






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






10. Cleave strands of DNA segments at certain sites.






11. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






12. Carbon - Hydrogen - Oxygen - and Nitrogen






13. All store energy within their chemical bonds.






14. 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.






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






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






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






18. 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.






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






20. The pituitary gland.






21. The class composed of birds.






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






23. Is the sugar that lactase acts upon.






24. An orienting response to light.






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






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






27. Covalent bonds






28. 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).






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






30. 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.






31. Respiratory organs within insects






32. The preservation of the integrity of genetic information from one generation to another.






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






34. In DNA Thymine pairs with...






35. 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.






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






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






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






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






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






41. Are cells involved in immunity and are produced in bone marrow as stem cells.






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






43. Most fossils of Hominids are from continents other than...






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






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






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






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






48. Covers and protects the leaf.






49. 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.






50. Anabolism