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. Developed the basic principles of genetics through his experiments with the garden pea






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






3. Organisms that carry two different alleles






4. Expressed allele -usually assigned capital letters






5. 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






6. 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






7. 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






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






9. The process whereby information coded in the base sequence of DNA is transcribed into a strand of mRNA that leaves the nucleus through nuclear pores. the remaining events of protein synthesis occur in the cytoplasm






10. Genetic makeup of an individual






11. Location of genes on DNA






12. Consists of structural genes






13. Synthesized discontinuously in the 5'->3' direction (since DNA polymerase synthesizes only in that direction) as a series Okazaki fragments






14. The process by which a foreign plasmid is incorporated into the bacterial chromosome via recombination - creating new inheritable genetic combinations






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






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






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






18. 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


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






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






21. Organisms that contain two copies of the same allele






22. Language of DNA consists of four letters: A -T -C -G -language of proteins consists of 20 'words': 20 amino acids -universal for almost all organism






23. Occurs when fragments of the bacterial chromosome accidentally become packaged into viral progeny produced during a viral infection






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






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






26. Base sequence of mRNA is translated as a series of triplets






27. May occur spontaneously or be induced by environmental factors






28. Occurs when linked genes are separated






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






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






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






32. Short segments from lagging strand






33. New codon may code for the same amino acid






34. 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






35. 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






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






37. Reproduction of bacterial cells and proliferate very rapidly under favorable conditions -asexual prcoess -3 kinds (transformation - conjugation and transduction)






38. The study of how traits are inherited from one generation to the next






39. Can be altered under certain conditions - altering the corresponding characteristics in the organism






40. Basic unit of DNA - which is composed of deoxyribose (a sugar) bonded to both a phosphate group and a nitrogenous base -bases: purines and pyrimidines






41. The parents differ in two traits - as long as the genes are on separate chromosomes and assort independently during meiosis






42. 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


43. One way of predicting the genotypes expected form a cross -genotypes are determined by looking at the intersections of the grid -indicates all potential progeny genotypes and the relative frequencies of the different genotypes and phenotypes can be e






44. Initiation - elongation - and termination






45. Individuals being crossed






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






47. Physical manifestation of the genetic makeup






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






49. Pairs of homologues in sexually differentiated species






50. 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







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