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AP Biology

Subjects : science, ap, 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. A sequence of electron carrier molecules (membrane proteins) that shuttle electrons during the redox reactions that release energy used to make ATP.






2. The entry compound for the Krebs cycle in cellular respiration; formed from a fragment of pyruvate attached to a coenzyme.






3. The parent individuals from which offspring are derived in studies of inheritance; P stands for parental.






4. Genes that are located on the same chromosome.






5. A solution in which water is the solvent






6. The most common type of mutation - a base-pair substitution in which the new codon makes sense in that it still codes for an amino acid.






7. The arrangement of phospholipids and proteins in biological membranes is described by the






8. A homogeneous mixture of two or more substance (liquid)






9. A life cycle in which there is both a multicellular diploid form - the sporophyte - and a multicellular haploid form - the gametophyte; characteristic of plants.






10. A discontinuously synthesized DNA strand that elongates in a direction away from the replication fork.






11. One of the pair of chromosomes responsible for determining the sex of an individual






12. A human genetic disease of red blood cells caused by the substitution of a single amino acid in the hemoglobin protein; it is the most common inherited disease among African Americans.






13. A noncoding - intervening sequence within a eukaryotic gene.






14. The diffusion of water across a selectively permeable membrane.






15. One of two light-harvesting units of a chloroplast's thylakoid membrane; it uses the P680 reaction-center chlorophyll.






16. A mass of abnormal cells that remains at the site of origin






17. A sugar (monosaccharide) or one of its dimers (disaccharides) or polymers (polysaccharides).






18. Any factor that has a greater impact on a population as the population increases






19. The most abundant type of RNA - which together with proteins - forms the structure of ribosomes. Ribosomes coordinate the sequential coupling of tRNA molecules to mRNA codons.






20. Generate and degrade H2O2 in performing various metabolic functions transfer hydrogen from various substrates to oxygen and they produce H2O2. Use O to break fatty acids that can be sent to mitochondria






21. An organic compound with a carbonyl group of which the carbon atom is bonded to two other carbons.






22. That portion of the endoplasmic reticulum that is free of ribosomes.






23. A chemical reaction involving the transfer of one or more electrons from one reactant to another; also called oxidation-reduction reaction






24. A chromosomal condition in which a particular cell has an extra copy of one chromosome - instead of the normal two; the cell is said to be trisomic for that chromosome.






25. The conversion of pyruvate to carbon dioxide and ethyl alcohol.






26. Reproduction of cells






27. Function like rivets fastening cells together into strong sheets Intermediate filaments reinforce this






28. A subatomic particle with single positive charge found in nucleus of an atom






29. A functional group consisting of a sulfur atom bonded to a hydrogen atom (—SH).






30. A type of yellow-green accessory photosynthetic pigment that transfers energy to chlorophyll a.






31. An instrument that measures the proportions of light of different wavelengths absorbed and transmitted by a pigment solution.






32. A specific receptor site on some part of an enzyme molecule remote from the active site.






33. Center of manufacturing - warehousing - sorting - and shipping products are usually modified during their transit from the cis pole to the trans pole






34. A functional group present in aldehydes and ketones and consisting of a carbon atom double-bonded to an oxygen atom.






35. A threadlike - gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins.






36. An aberration in chromosome structure resulting from an error in meiosis or mutagens; duplication of a portion of a chromosome resulting from fusion with a fragment from a homologous chromosome.






37. A dense region of DNA in a prokaryotic cell.






38. Material present in the cytoplasm of all eukaryotic cells - important during cell division; the microtubule-organizing center.






39. Walled cells are _____ in isotonic surroundings - where there is no tendency for water to enter.






40. A machine that spins test tubes at the fastest speeds to separate liquids and particles of different densities.






41. An extensively branched glucose storage polysaccharide found in the liver and muscle of animals; the animal equivalent of starch.






42. A human genetic disease caused by a sex-linked recessive allele; characterized by progressive weakening and a loss of muscle tissue.






43. A chromosomal alteration in which the organism possesses more than two complete chromosome sets.






44. A plant that uses crassulacean acid metabolism - an adaptation for photosynthesis in arid conditions - first discovered in the family Crassulaceae. Carbon dioxide entering open stomata during the night is converted into organic acids - which release






45. Network of membrane sacs and tubes; active in membrane synthesis and other synthetic and metabolic processes






46. An acceptor that temporarily stores energized electrons produced during the light reactions.






47. The generation of ATP by cyclic electron flow.






48. Prokaryotes cell division . Each daughter cell receives a copy of the single parental chromosome






49. Organization of DNA and proteins into fibrous material






50. One form of the secondary structure of proteins in which the polypeptide chain folds back and forth - or where two regions of the chain lie parallel to each other and are held together by hydrogen bonds.