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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. Bicarbonate ions (Co2+H2O= h2Co3= H+ + HCO3-) Co2 removed by lungs - H+ removed by urine






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






3. Rate at which an organism uses energy to power these reactions






4. 1. If equal - then amino acid residue drifting neutrally 2. If nonsynon higher than sysnon - positive selection causing change in amino acid residue 3. If sysnon higher than nonsynon then purifying selection resisting change in amino acid residue (ly






5. Cover inner and outer surface areas - secrete substances - selective barriers - transport - cilia or sensory






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






7. Fluctuating temperatures






8. Several loci






9. Continuous within Bowman's capsule - Loop of Henle






10. Feedback information used to counteract the influence that created the error signal (stabilizes back to set point)






11. Inherited but no use (whale pelvis)






12. When a few pioneers colonize a new region - they possess fewer alleles than their source population creating a bottleneck effect






13. Allele and genotype frequencies






14. Proportion of allele in population






15. Extracellular fluid - including blood/plasma (Allow cells to take in nutrients and remove waste)






16. Proportion of genotype in population






17. When a few pioneers colonize a new region - they possess fewer alleles than their source population creating a bottleneck effect






18. Proportion of genotype in population






19. Change in a single nucleotide in a DnA sequence






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






21. Different form of a gene






22. Total number of individuals in a population






23. Q10= Rt/Rt-10 (rate of process or reaction - and rate at 10 degreed celcius lower)-- If not sensititve - Q10 is usually 1 - generally between 2 and 3






24. Excrete ammonia






25. One loci






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






27. Change in allele frequencies that occur over time in a population






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






29. Shifts mean towards one extreme (positive selection) ie long horned cows






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






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






32. MR is at minimal level combatible with all physiological functionsfor homestastis (BMR level)






33. Stored as either glycogen in liver or as triglycerides






34. Individuals interacting at a given time and place






35. Reuglated rise in body temp caused by a rise in the hypothalamic set point for metabloic heat production (fights pathogrens - and increased production of white blood cells)






36. 1. Must consume more food - run risk of overheating (hyperthermia) - restricted to water plentiful environments






37. The differential survival and reproduction of individuals in a population based on specific traits chosen by humans






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






39. High denisty of mitochodira abnd blood vessels (good at non shivering thermogensis)






40. A sudden change to population that causes large changes in allele frequencies over time ie population bottleneck






41. Stable temperatures






42. Development of offspring from unfertilized eggs






43. Most of the water in an animal's body located within its cells






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






45. Descending loop permeable to waterbut not solutes - ascending not permeable to water and actively transports salts out (desert animals - long Henles - freshwater fish - no Henle)






46. 20%of plasma leaves capillaries and filters into bowman's space. GFR= Rate of filtrate production (controlled by dilation and constriction of afferent arteriole)






47. Wallace






48. Hormone - stimulates active transport of 3 Na+ out for every 2 K+ into tubule






49. Rate at which an organism uses energy to power these reactions






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