Test your basic knowledge |

Bio 101: Harvard

Subjects : 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. In annelids ie earthworms - coelomic fluid is swept through by cilia and tubule cells actively reabsorb good molecules and secret others - exits as urine






2. Proportion of allele in population






3. Low glucose level in blood






4. Amount of fuel used during a given time to power all of its metabolic requirement - = MR - sometimes appears as heat






5. (GLUTS) move to surface - inhibit glycogenolysis and gluconeogensis






6. Too large to diffuse across plasma membrane so they are digested into monoglycerides and fatty acids - diffused through epithelial cells - re-synthesized into triglycerides - packaged into chylomicrons for lymph & blood transport






7. Product of protein and nucleic acid degradation: 1. Ammonia (NH3) - 2. Urea (lose lots of water)-humans are ureotelic - 3. Uric acid (lose little water)






8. Cluster of interconnected fenestrated capillaries - supplied by afferent arteriole - drained by efferent arteriole - podocytes form filatration slits






9. Heat transfer when two objects come into direct contact (icepack on sprained ankle)






10. The Origin of Species 1859

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


11. Species change over time - divergent species share a common ancestor - change is produced by natural selection






12. Amount of heat required to raise the temperature of 1 gram of water 1 degree Celsius






13. Total number of individuals in a population






14. Pxp is genotype for AA qxq is genotype for aa and pq is heterozygotes - model shows scientists what mechanisms are causing evolution (p+q=1 and p2 + 2pq+q2=1)






15. Changes set point altogether (being awake - daytime activity - disease - skin temperature)






16. Asexual 1. Doesn't need a mate 2. Maintains adaptive genes 3. All kids asexual (able to reproduce) V.S. Sexual 1. Repairs damaged DNA 2. Elimination of deleterious mutations (asexual makes exact copies) 3. Greater genetic variation (genetic combinati






17. Prolonged energy source for many tissues - and brain - less protein breakdown required






18. ADH- increase number of water channels - allows more water to leave duct - urine volume decreases






19. Humans do this through clothing






20. Hot fish have arteries closer to muscle to warm blood (countercurrent heat exchanger)- allows them to swim faster - catch prey






21. Tissues other than skeletal muscles produce metabolic heat by uncoulping oxidative phosphorylation (burn fuel without producing ATP)






22. Fluctuating temperatures






23. Allow extracellular fluid to equilibrate with seawater






24. Much of variation in size lies in non coding DNA as opposed to functional genes. Also in large populations - slightly deleterious sequences more likely to be purged than in small size (thus more noncoding DNA in large population over small)






25. Change in relative frequency of the genotype from one generation to the next






26. Thermostat of the brain (when cooled - constricts blood vessels in skin and increases metabolic heat production= body temp increases)






27. Human based selection (ie cows with more milk or high fat content)






28. Development of offspring from unfertilized eggs






29. Change in relative frequency of the genotype from one generation to the next






30. Several loci






31. In medulla - run parrallel to loops of Henlue and medullary collecting ducts - minimize excessive loss of solutes via diffusion






32. The creation of bimodal distribution (both extremes favored) ie Bird bills






33. Environments where species can survive within their geographic range






34. Occurs when ingested nutrients enter the blood stream from the GI tract






35. Liver converts no carbs into glucose (lipolysis-fatty acids and glycerol to glucose)






36. The body's resting rate of energy expenditure






37. Short term control of feeding - stretch receptors in stomach and small intestines sens signals to the brain - realease hormones to supress appetite






38. Amount of fuel used during a given time to power all of its metabolic requirement - = MR - sometimes appears as heat






39. Heat production = volume - but heat loss= Surface Area






40. Copies of genes that are no longer functional






41. The number of osmoles of solute particles per liter of solvent - must be maintained between extracellular and intracellular fluid or cells can change volume and burst/die






42. Heat in must equal heat out - or body temperature changes (metabolism + Rabs= Rout+convection - conduction and evaporation)






43. Environments where species can survive within their geographic range






44. Excrete ammonia






45. 1. No mutation 2. No differential selection among genotypes 3. There is no gene flow 4. Population size is infinite 5. Mating is random






46. Tissues other than skeletal muscles produce metabolic heat by uncoulping oxidative phosphorylation (burn fuel without producing ATP)






47. Blood into dialyzer (acts as filtrater) to create artificaill countercurrent exchange system






48. Body temp changes with enviro - BMR measured at standard temp for each species - SMR or standard metabolic rate (fish - ambhibia - reptiles)






49. Pxp is genotype for AA qxq is genotype for aa and pq is heterozygotes - model shows scientists what mechanisms are causing evolution (p+q=1 and p2 + 2pq+q2=1)






50. Number of individuals per unit of area/volume (dynamic - change over time)