Test your basic knowledge |

PCAT Biology Genetics

Subjects : pcat, 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. Each strand of DNA that is a template in the synthesis of two new daughter helices






2. (AUG) ribosome scans the mRNA until it bonds to this (methionine) and UAC on anticodon of tRNA






3. Induce mutations -include cosmic rays - X rays - UV rays - and radioactivity






4. Genetic makeup of an individual






5. May infect other bacteria and introduce new genetic arrangements through recombination with the new host cell's DNA






6. New codon may code for the same amino acid






7. Codes for the synthesis of a repressor molecule that binds to the operator and blocks RNA polymerase form transcribing the structural genes






8. Recessive genes that are carried on the X chromosome will produce the recessive phenotypes whenever they occur in men because no dominant allele is present to mask them -ex: hemophilia and color blindness






9. Dominant allele is expressed in the phenotype

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


10. On amino acid which has an active site that binds to both the amino acid and its corresponding tRNA - ctalyzing their attachment to form an aminoacyl-tRNA complex






11. DNA language must be translated by mRNA in such a way as to produce the 20 words in the amino acid language






12. Individuals being crossed






13. Complementary to one of the mRNA codons






14. Bacteriophages that replicate by the lytic cycle - killing their host cells






15. Either the failure of homologous chromosomes to separate properly during meiosis I or the failure of sister chromatids to separate properly during meiosis II -zygote might either have 3 copies of that chromosome (trisomy) or just a single copy (monos






16. May occur spontaneously or be induced by environmental factors






17. Degeneracy/redundancy of the genetic code since there are 64 different codons and only 20 amino acids






18. Physical manifestation of the genetic makeup






19. Cell burst






20. Sugar-phosphate chains on the outside of the helix and the bases on the inside -C-G - T-A -AKA Watson Crick DNA model






21. Composed of two subunits (consisting of proteins and rRNA) - one large and one small - that bind together only during protein synthesis -have 3 binding sites (for mRNA and two tRNA)






22. Consists of structural genes






23. System where the repressor binds to the operator - forming a barrier that prevents RNA polymerase from transcribing the structural genes






24. Fruit fly -produces often (short life cycle) -reproduces in large numbers (large sample size) -chromosomes (especially in the salivary gland) are large and easily recognizable in size and shape -its chromosomes are few (4 pairs - 2n=8) -Mutations occ






25. Brings amino acids to the ribosomes in the correct sequence for polypeptide synthesis -recognizes both the amino acid and the mRNA codon






26. Structure formed when many ribosomes simultaneously translate a single mRNA molecule






27. Nitrogen bases are added - deleted - or substituted - thus crating different genes; inappropriate amino acids may be inserted into polypeptide chains - and a mutated protein may be produced






28. Phage DNA takes control of the bacterium's genetic machinery and manufactures numerous progeny - causing the cell to lyse - releasing new virions - each capable of infecting other bacteria -if initial infection takes place on a bacterial lawn - then






29. Adenine and guanine






30. Initiation - elongation - and termination






31. Deoxyribonucleic acid -contains information coded in the sequence of its base pairs - provding the cell with a blueprint for protein synthesis -regulate all life functions -has the ability to self replicate -basis of heredity -mutable






32. If the bacterioophage does not lyse its host cell - it becomes integrated into the bacterial genome in a harmless form - lying dorant for one or more generations. the virus mays tay integrated indefinitely - replicating along with the bacterial gneom






33. (UAA - UAG - or UGA) terminates polypeptide synthesis






34. Location of genes on DNA






35. Virus that infcts its host bacterium by attaching to it - boring a hole through the bacterial cell wall - and injecting its DNA while its protein coat remains attached to the cell wall and enters the host in either a lytic cycle or a lysogenic cycle






36. Changes in the genetic information of a cell coded in the DNA -if occured in the somatic cells - it can lead to tumors in an individual






37. Nucleic acids are deleted or inserted into the genome sequence (lethal)






38. Hydrogen bonds form between the mRNA codon in the A site and its complementary anticodon on the incoming aminoacyl-tRNA complex






39. Structural component of ribsomes and is the most abundant of all RNA types -synthesized in the nucleolus






40. Alternative forms of genes when it exists in more than one form






41. Genes on the same chromosome will stay together unless crossing over occurs -crossing over exchanges information between chromosomes and may break the linkage of certain patterns

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


42. The noncoding sequence of DNA that serves as the initial binding site for RNA polymerase






43. System where the repressor is inactive until it combines with the corepressor






44. TRNA binding site for ribosomes to attach to the growing polypeptide chain (peace out site)






45. True-breeding individuals (which - if self-crossed - produce progeny only with the parental phenotype) with different traits - mated them - and statistically analyzed the inheritance of the traits in the progeny






46. 1) Genes exist in alternative forms. A gene controls a specific trait in an organism. 2) An organism has two alleles for each inherited trait - one inherited from each parent 3) The two alleles segregate during meiosis - resulting in gametes that car

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


47. Small circular rings of DNA which contain accessory genes






48. Include incomplete dominance - and codominance






49. Double stranded DNA molecule unwinds and separates into two single strands






50. Self replication ensures that its coded sequence will be passed on to successive generations






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