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






2. Development of offspring from unfertilized eggs






3. 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






4. Harmful mutation






5. Environments where species can survive within their geographic range






6. Secrete penicillin - toxins - K+ and H+






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






8. BMI of 30 or greater






9. Daily decline of body temp to save energy (bouts of torpor last mustiple days in hibernation)






10. What organisms look like and how they behave






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






12. Heat transfers to a surrounding medium ie air or water via surface






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






14. Environments where species can survive within their geographic range






15. 1. Most variation caused by neutral changes - do not confer advantage or disadvantage. 2. Since netural mutation is constant - can be used as a molecular clock to calculate divergence btwn species. 3. Neutral mutations not dependent on population siz






16. What organisms look like and how they behave






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






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






19. Ability to compete for mates






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






21. Any change in the nucleotide sequences of an organism's DNA (deleterious - neutral - beneficial)






22. Proportion of genotype in population






23. Cells or organisms having two sets of chromosomes






24. Total number of individuals in a population






25. 2NAA + NAa/2N is p and 2aa + NAa/2N is q (however similar frequencies can have very different genotype frequencies)






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






27. When an organisms phenotype influences ability to attract mates






28. Ability to compete for mates






29. Cells or organisms having two sets of chromosomes






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






31. Favors the mean - selection against any deleterious mutations (baby size)






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






33. Excrete ammonia






34. Taken up by all body cells - used to synthesize proteins - excess converted into fatty acids and then triglycerides






35. A process in cell division during which the number of chromosomes decreases to half the original number by two divisions of the nucleus - which results in the production of sex cells






36. Below TNZ must increase metabolic heat production (shivering increase four times above BMR)






37. Change salt water balance: 1. respiration - 2. metabolism - 3. waste elimination - 4. food ingestion 5. body temperature regulation






38. Sum of all alleles






39. Inherited but no use (whale pelvis)






40. 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






41. Humans do this through clothing






42. Maintenance of stable conditions within the internal environment (temperature - PH level - ion concentrations - 02 levels - co2 levels - fuel molecules ie glucose)






43. Change in a single nucleotide in a DnA sequence






44. Fluctuating temperatures






45. A favored trait that evolves through natural selection (more organisms with that trait survive than those without)






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






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






48. Change on scale at or above species - changes in separate gene pools






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






50. 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







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