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Home , Cell membrane, Melanosome

1992 ILLINOIS JETS TEAMS District Test

1. The surrounding a ______is 5. The organizer region of a perforated by pores. contains hundreds of copies of ____. A. B. nucleus A. rRNA C. mitochondria B. histone genes D. C. tRNA genes E. D. ribosomal genes E. non-histone chromosomal protein genes 2. The molecule which directly provides energy for biochemical reactions in an 6. In general, a is defined as a is ______. molecule that ______.

A. A. regulates the of the cell that B. NAD produces it C. ATP B. regulates the activity of specific (s) D. DNA not adjacent to the cell that produces it E. RNA C. regulates D. acts as a second messenger 3. The primary function of nucleoli is the E. is a structural element of production of ______. 7. A nucleosome is ______. A. rRNA B. mRNA A. a nuclear responsible for RNA C. splicing D. DNA B. a pore in the nuclear membrane E. tRNA responsible for the passage of mRNA to the 4. Mitochondria have their own circular C. a unit of chromatin organization genome and distinctive ribosomes. These composed of eight histone molecules observations support the hypothesis that around which DNA is wrapped these ______. D. an element of chromosome structure located at the tips of the chromosomes A. arose from an infolding of an ancestral that protects them from undue eukaryotic degradation B. were derived from E. a prokaryotic parasitoid that occupies C. synthesize all of the found in the nuclei of some them D. are derived from an ancestral E. arose from a budding off of a piece of the nucleus carrying some of the nuclear genetic information

1 1992 ILLINOIS JETS TEAMS District Biology Test

8. An facilitates molecular reactions by ______. 12. The photosynthetic pigments of a green are concentrated in A. raising the activation energy ______. B. lowering the activation energy C. increasing the collision rate of the A. the membrane of the disks reactants B. the stroma D. eliminating the transition state C. the thylakoid compartment E. insuring they are irreversible D. the outer membrane of the chloroplast 9. Which of the following is the first definitive E. the flattened membrane channels sign that a is meiotic rather connecting separate grana than mitotic? 13. The oxygen generated during A. a spindle is derived from B. a metaphase plate ______. C. synapsed chromosomes D. chromatids A. CO2 E. a cleavage furrow B. chlorophyll C. H2O 10. Ribosomes are the sites of ______. D. CH2O E. ATP A. protein synthesis B. RNA synthesis 14. When sunlight shines on a chloroplast, C. oxidative respiration the pH will be the lowest ______. D. RNA processing E. synthesis of the nucleoli A. in the stroma B. in the intermembrane space 11. Chlorophyll appears green because it C. on the outer surface of the grana ______. D. in the flattened membrane channels connecting separate grana A. absorbs light wavelengths in the E. in the intrathylakoid compartment green range B. reflects light wavelengths in the red 15. Which of the following is NOT produced and blue ranges by the light dependent reactions of C. absorbs light wavelengths in the red photosynthesis? and blue ranges D. reflects light wavelengths in the green A. oxygen range B. ribulose bisphosphate E. emits light wavelengths in the green C. ATP range D. NADH E. excited, or high-energy, electrons

2 1992 ILLINOIS JETS TEAMS District Biology Test

16. The photosynthetic pigments of a green plant are concentrated in ______. 20. An F2 phenotypic ratio of 9:3:3:1 is ______. A. the membrane of the thylakoid disks B. the stroma A. a monohybrid ratio B. a dihybrid ratio C. the thylakoid compartment C. an epistatic ratio D. the outer membrane of the D. only seen for certain traits in garden chloroplast peas E. the flattened membrane channels E. only seen in wild populations. connecting separate grana 21. The functional product of the majority of 17. The genetic material of living genes is ______. is ______. A. a nucleic A. deoxyribonucleic acid B. a protein B. ribonucleic acid C. a chromosome C. a chromosome D. a mutation D. a E. an allele E. a nucleosome 22. Homologous pairs of chromosomes 18. The 'father of genetics' was ______. ______.

A. Morgan A. contain the same genes B. Mendel B. may contain different alleles C. Sturtevant C. segregate from one another during D. Turner the first division of meiosis E. Watson D. all of the above E. none of the above 19. In four o'clock and carnations, the allele for red color is incompletely 23. RNA is copied from a molecule of DNA dominant over the allele for white. If a through a process called ______which cross between two plants produced 18 takes place in the nucleus. red, 32 pink and 15 white flowered offspring, what were the phenotypes of A. translation the parents? B. C. replication A. red and red D. protein synthesis B. pink and red E. translocation C. white and pink D. white and white 24. If an is true-breeding it is said to E. pink and pink be _____.

A. heterozygous B. homozygous

3 1992 ILLINOIS JETS TEAMS District Biology Test

C. alleles B. D. phenotype C. translocation E. genotype D. E. transpiration 25. The physical appearance of an organism regardless of its genetic makeup is called 30. Water uptake by roots is enhanced by its ______. ______.

A. heterozygosity A. evaporation from the leaves B. homozygosity B. the water table of the soil C. phenocopy C. mycorrhizal fungi D. phenotype D. high humidity E. genotype E. soil

26. Recombination of alleles of linked genes 31. Wood is derived from ______. is due to ______. A. the apical meristem A. translocation B. the vascular cambium B. inversion C. C. crossing-over D. the cork cambium D. mutation E. xylem E. deletion 32. In flowering plants, the male gametophyte 27. Which of the following is NOT an is ______. autotroph? A. the anther A. wheat B. the stigma B. mushrooms C. the style C. green D. the flower D. nitrifying bacteria E. the pollen grain and tube E. cyanobacteria 33. Sugars and other solutes are translocated 28. Which of the following is typical of a to metabolically active tissue by the monocot but not of a dicot? ______.

A. vascular bundles distributed A. phloem throughout the stem B. xylem B. two seed leaves C. parenchyma C. netted leaf venation D. vascular cambium D. axillary bud E. stomata E. pollen grains typically with three pores or furrows 34. Stomata of ______close during the day and open at night. 29. Water enters roots by the process of ______. A. corn B. cranberry A. C. crocus

4 1992 ILLINOIS JETS TEAMS District Biology Test

D. cactus A. renal pelvis of the kidney E. chrysanthemum B. urinary bladder C. ureter D. peritubular capillaries E. nephrons 35. The group of organisms represented by the greatest number of species on the 40. In a developing embryo, germ layers are earth today is the ______. first evident at ______.

A. primates A. blastocyst stage B. B. gastrula C. C. blastula D. crustaceans D. morula E. insect E. neural fold stage

36. An organism that regulates its body 41. All of the following organisms are temperature to remain constant in spite of segmented except ______. environmental variations in temperature is a ______. A. annelids B. crustaceans A. homeotherm C. insects B. poikilotherm D. C. ectotherm E. onychophorans D. endotherm E. facultative poikilotherm 42. A true coelom is found in ______.

37. Much of and all of absorption of A. a food occurs in the ______. B. a coelenterate C. an annelid A. esophagus D. a rotifer B. stomach E. a nematode C. small intestine D. large intestine 43. The carrying capacity of a population is E. cloaca determined by ______.

38. The responsible for much of A. birth rate mammalian digestion are manufactured B. death rate and secreted by the ______. C. limiting resource D. population growth rate A. gall bladder E. trophic level of the species B. liver C. pancreas D. small intestine E. stomach

39. Urine first forms in the ______.

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E. species with seeds of larger stored biomass

47. The Hardy-Weinberg principle derives 44. Two species of which from the premise that ______. require the same food, were grown together. After several days of growth, A. dominant phenotypes will occur more you will find ______. frequently in a population than recessive phenotypes A. only one or the other species remains B. over time, recessive phenotypes will as a result of competitive exclusion disappear from a population B. both species will coexist as a C. genotypic frequencies in a population consequence of mutualism are determined by selection C. that in different replicates of the D. allele frequencies in a population are experiment either one or both unstable species survive as a consequence of E. genotypic frequencies are neutral interactions determined by the respective allele D. only one species survives as a frequencies in a given population consequence of predation E. both species exist in equilibrium as a 48. The edible Viceroy butterfly is a consequence of resource partitioning ______of the inedible Monarch butterfly. 45. The smallest biomass in an ecosystem is represented by _____. A. Batesian mimic B. Mullerian mimic A. primary producers C. closely related species B. herbivores D. sibling species C. top carnivores E. prey D. heterotrophic organisms E. autotrophic organisms 49. ______is not recycled within an ecosystem. 46. Pioneer species of a primary succession are characterized as ______. A. water B. energy A. long-lived species of low reproductive C. carbon potential with poor seed dispersal D. nitrogen mechanisms E. phosphorus B. short-lived species of high reproductive potential with excellent seed dispersal mechanisms C. long-lived species with high reproductive potential and poor seed dispersal mechanisms D. slow-growing species that mature in the second growing season

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50. Two closely related species of finch inhabit different Galapagos islands. On the islands where only one or the other species occurs, their bill sizes are very similar. On the island where they occur together, their bill sizes are distinctly different. This is an example of ______.

A. competitive exclusion B. mutualism C. commensalism D. niche shift E. mimicry

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TEAMS TEST - DISTRICT - KEY

1. B 21. B 41. D

2.C 22.D 42. C

3.C 23. B 43. C

4.D 24. B 44. A

5.A 25. D 45. C

6.B 26. C 46. B

7.C 27 B 47. E

8.B 28. A 48. A

9.C 29. A 49. B

10.A 30. C 50. D

11.D 31. B

12.A 32. E

13.C 33. A

14.E 34. D

15.B 35. E

16.A 36. A

17.A 37. C

18.B 38. C

19.E 39. E

20.B 40. B

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