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






2. Location (pelvis in fish)-- Where gene effects - BMP4 causing webs to apoptosis






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






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






5. Cup-shaped strucutre of the nephron of a kidney which encloses the glomerulus and where filtration takes place

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


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






7. Stored as either glycogen in liver or as triglycerides






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






9. Individuals interacting at a given time and place






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






11. Functional unit of kidney - millions per - renal corpuscle forms filtrate - tubule performs secretion and reabsorption






12. Fluctuating temperatures






13. 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






14. 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






15. Proportion of genotype in population






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






17. Releases fatty acids to diffuse into cells of the body - some used during absorptive phase for energy






18. 2NAA + NAa/2N is p and 2aa + NAa/2N is q (however similar frequencies can have very different genotype frequencies)






19. Deleterious mutations in a non-recombining genome accumulate at each replication (asexual reproductivity)

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


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






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






22. Humans do this through clothing






23. Outcrops of species due to suitable habitats separated by areas of unsuitable habitat






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






25. Skeletal muscle (major consumer of glucose) - cardiac muscle - smooth muscle (gut - bladder and blood vessels)






26. 2NAA + NAa/2N is p and 2aa + NAa/2N is q (however similar frequencies can have very different genotype frequencies)






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






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






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






30. Two or more homologous genes found in different species






31. Fluctuating temperatures






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






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






34. Harmful mutation






35. 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)






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






37. Minerals that carry electrical charges that help maintain the body's fluid balance - imbalance can alter membrane potentials/disrupt cell activities






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






39. Like in butterfly - often give organism an survival and mating advantage-- however homozygotes will always exist as children of heterozygotes






40. Copies of genes that are no longer functional






41. 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






42. Heat transfers away from a sruface due to evaporation (expensive to sweat and pant - burn more calories)






43. Self fertilization - homozygous genotypes increase - heterozygous genotypes decrease






44. Allow extracellular fluid to equilibrate with seawater






45. Neurons (generate and conduct electrical signals) and glial cells (release chemical signals)






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






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






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






49. Glucose-used to syntheisize ATP (and triglycerides) - galactose - and fructose






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