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. Wallace






2. Refers to all the bodily activities and chemical reactions in an organism that maintain life






3. The body's resting rate of energy expenditure






4. 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)






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






6. Native to one location and no where else






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






8. Populations do






9. Does not change the encoded amino acid. Occurs at highest rate (also synonymous substitution)






10. Proportion of allele in population






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






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






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






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






15. Region where species are found (densities are zero elsewhere)






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






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






18. 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






19. Some animals move around to increase decrease temperature (pray themselves with water/dust - find shade - put on clothing)






20. Ability to compete for mates






21. If directional selection occurs for generations - however can be stopped due to change in environment or when optimal phenotype reached (then stabilizing)






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






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






24. Two or more homologous genes found in different species






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






26. 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






27. Different form of a gene






28. 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)






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






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






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






32. Time (duration gene active) eg dolphin flipper






33. Proportion of genotype in population






34. Major cell movement - 3 germ layers form






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






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






37. Different form of a gene






38. Creates new genes by inserting exons and flanking introns into a different gene sequence - there by introducing a new domain in the gene product






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






40. Main excretory organ of vertebrates: 1. specialized tubules of epithelial cell - 2. salt and water homeostasis - 3. Nitrogeneous waste elimination 4.Renal cortex= filtration - renal medulla = filtration concentrated 5. milions of nephrons






41. 1. Ectoderm 2. Endoderm 3. Mesoderm






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






43. MR= K(Tb-Ta) K is the slope of thermal conductancce - how readily the animal loses heat






44. Changes the encoded amino acid-- usually deleterious (nonsynonymous substitution)






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






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






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






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






49. Allele and genotype frequencies






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests