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






2. Plasmids that are capable of integration into the bacterial genome






3. 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






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






5. Transfer of genetic material between two bacteria that re temporarily joined






6. Consists of structural genes






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






8. Basic unit of heredity






9. 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






10. Organisms that contain two copies of the same allele






11. 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






12. New codon may code for the same amino acid






13. Ribonucleic acid -polynucleotide structurally similar to DNA except that its sugar is ribose -contains uracil instead of thymine -usually single stranded -found in both nucleus and cytoplasm -several types are involved with mRNA - tRNA - and rRNA






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






15. The ribosome advances three nucleotides along the mRNA in the 5' to 3' direction and the uncharged tRNA from the P site is expelled - and the peptidyl-tRNA from the A site moves into the P site and completes the cycle






16. Only one trait is being studied in this particular mating






17. 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






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






19. 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


20. New codon may be a stop codon






21. Begins at a unique origin of and proceeds in both directions simultaneously






22. Small RNA found in the ctyoplasm that aids in the translation of mRNA's nucleotide code into a sequence of amino acids -brings amino acids to the ribosomes during protein synthesis






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






24. 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)






25. Genes that are located on the X or Y chromosome -in humans - most are located on the X






26. Individuals being crossed






27. Adenine and guanine






28. Formed between the amino acid attached to the tRNA in the A site and the fmet attached to the tRNA in the P site






29. 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






30. May occur spontaneously or be induced by environmental factors






31. Carries the complement of a DNA sequence and transports it from the nucleus to the ribosomes -assembled from ribonucleotides that are complementary to the 'sense' strand of the DNA -monocistronic






32. Consists of a single circular chromosome located in the nucleoid region of the cell






33. Binds to the incoming aminoacyl-tRNA complex (Arriving site)






34. Initiation - elongation - and termination






35. Daughter strand that is continuously synthesized by DNA polymerase in the 5'->3' direction






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






37. 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






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






39. Physical manifestation of the genetic makeup






40. Include incomplete dominance - and codominance






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






42. Occurs while multiple alleles exist for a given gene and more than one of them is dominant -expression of both dominant alleles are simultaneous -ex: ABO blood group






43. 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


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






45. Complex that can't bind to the operator - thus permitting transcription






46. Short segments from lagging strand






47. The sequence of nontranscribable DNA that is the repressor binding site






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






49. Location of genes on DNA






50. Each strand of DNA that is a template in the synthesis of two new daughter helices







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