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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. 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.






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






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






4. Is the sugar that lactase acts upon.






5. Plants that produce flowers as reproductive organs. They have two divisions - monocots and dicots.






6. Subsets below the kingdom level






7. The individual we recognize as an adult fern.






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






9. 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).






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






11. Breaking down






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






13. Cleave strands of DNA segments at certain sites.






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






15. 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.






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






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






18. Controls olfactory lobes (smell)






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






20. 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.






21. 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).






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






23. 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.






24. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






25. 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.






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






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






28. In DNA Thymine pairs with...






29. The size of a cell is limited by the ratio of its surface area to volume.






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

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31. Refers to the birthrate of a population.






32. Ended with the extinction of the dinosaurs.






33. Where protein synthesis occurs. They float unattached in the cytoplasm. They contain RNA that is specific to their function in protein formation.






34. The transfer of electrons.






35. 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.






36. Contains optic lobes - controls sight.






37. 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.






38. 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.






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






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






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






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






43. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






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






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






46. 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






47. 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.






48. Protein synthesis






49. An orienting response to light.






50. Controls balance and muscle coordination