SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
PCAT Biology Genetics
Start Test
Study First
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. 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
Translocation
Messenger mRNA
Genetic Code
Heterozygous
2. The study of how traits are inherited from one generation to the next
Gene
Genetics
Codominance
Frameshift Mutation
3. The parents differ in two traits - as long as the genes are on separate chromosomes and assort independently during meiosis
Homozygous
Transfer RNA (tRNA)
Dihybrid Cross
Filial (F generations)
4. Occurs when linked genes are separated
Episomes
Okazaki fragments
Recombination
Transcription
5. Cytosine and thymine
Repressible Systems
Chromosomes
Plasmid
Pyrimidines
6. Structure formed when many ribosomes simultaneously translate a single mRNA molecule
Polyribosome
Mutable
Nondisjunction
Antibody resistance
7. 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
P-site
Mutable
Nondisjunction
Transformation
8. Physical manifestation of the genetic makeup
Lysogenic Cycle
Mendel's Second Law: Law of Independent Assortment
Binary fission
Phenotype
9. Short segments from lagging strand
Frameshift Mutation
Okazaki fragments
Chromosomes
Polyribosome
10. Expressed allele -usually assigned capital letters
Heterozygous
Dominant Allele
tRNA Job
Complementary Base-Pairing
11. Progeny generations
Testcross
Filial (F generations)
Lagging Strand
Backcross
12. Base sequence of mRNA is translated as a series of triplets
Codons
Bacterial Genome
Heredity
Homozygous
13. 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
Synonyms
Phenotype
Lytic Cycle
Non-Mendelian Inheritance Patterns
14. Organisms that contain two copies of the same allele
Homozygous
Transcription
Codominance
Conjugation
15. Consists of structural genes
Gene
Varions
Elongation
Operon
16. Organisms that carry two different alleles
Ribosomal RNA (rRNA)
Lysogenic Cycle
Plasmid
Heterozygous
17. May occur spontaneously or be induced by environmental factors
Mendel's Second Law: Law of Independent Assortment
Non-Mendelian Inheritance Patterns
A-site
Chromosomal Breakage
18. Nucleic acids are deleted or inserted into the genome sequence (lethal)
Phenotype
Purines
Lytic Cycle
Frameshift Mutation
19. 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
Heredity
Crosses
Lysogenic Cycle
Dihybrid Cross
20. Cell burst
Nucleotide
Sex Linked Recessives
Conjugation
Lyse
21. 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
Synonyms
Drosophila Melanogaster
tRNA Job
Dominant Allele
22. System where the repressor binds to the operator - forming a barrier that prevents RNA polymerase from transcribing the structural genes
A-site
Transfer RNA (tRNA)
Dihybrid Cross
Inducible Systems
23. New codon may code for the same amino acid
Silent Mutation
Heterozygous
Recombination
A-site
24. Complementary to one of the mRNA codons
Transformation
Mendel's First Law: Law of Segregation (Four Principles)
Anticodon
Phenotype
25. Codes for the synthesis of a repressor molecule that binds to the operator and blocks RNA polymerase form transcribing the structural genes
Mendelian Genetics
Crosses
Mendel's Law of Dominance
Regulator Gene
26. May infect other bacteria and introduce new genetic arrangements through recombination with the new host cell's DNA
Monocistronic
Plasmids
Ribosomes
Varions
27. 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
DNA
Punnet Square Diagram
Inducible Systems
Aminoacyl-tRNA synthetase
28. Initiation - elongation - and termination
Start Codon
Lysogenic Cycle
Codominance
Polypeptide Synthesis
29. May be found on the plasmids and transferred into recipient cells along with these factors
Translation
tRNA Job
Antibody resistance
Mendel's Second Law: Law of Independent Assortment
30. 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
31. Location of genes on DNA
Binary fission
Chromosomes
Mutagenic Agents
Start Codon
32. Consists of a single circular chromosome located in the nucleoid region of the cell
Heterozygous
Start Codon
Bacterial Genome
Inducible Systems
33. TRNA binding site for ribosomes to attach to the growing polypeptide chain (peace out site)
Mendel's Law of Dominance
P-site
Inducible Systems
Lysogenic Cycle
34. Chromosome fragment
Heredity
Plasmid
Genotype
Homozygous
35. Complex that can't bind to the operator - thus permitting transcription
Triplet Code
Synonyms
Inducer-Repressor Complex
Recessive Allele
36. 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
37. Degeneracy/redundancy of the genetic code since there are 64 different codons and only 20 amino acids
Synonyms
RNA
Silent Mutation
Autosomes
38. (AUG) ribosome scans the mRNA until it bonds to this (methionine) and UAC on anticodon of tRNA
Chromosomes
Recessive Allele
Missense Mutation
Start Codon
39. Only one trait is being studied in this particular mating
Monohybrid Cross
Triplet Code
Messenger mRNA
Heterozygous
40. 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
Translation
Missense Mutation
Transcription
Gene Mutation
41. 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
Elongation
Environmental Factors
RNA
Antibody resistance
42. 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
43. One mRNA strand codes for one polypeptide
Transduction
Conjugation
Monocistronic
Punnet Square Diagram
44. Self replication ensures that its coded sequence will be passed on to successive generations
Heredity
Antibody resistance
Recessive Allele
Autosomes
45. DNA language must be translated by mRNA in such a way as to produce the 20 words in the amino acid language
Filial (F generations)
Mendelian Genetics
P-site
Triplet Code
46. 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
Sex Linked Recessives
Incomplete Dominance
Start Codon
Varions
47. New codon may code for a different amino acid
Polypeptide Synthesis
Pyrimidines
Triplet Code
Missense Mutation
48. 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
Drosophila Melanogaster
Operator Gene
DNA
Double-Stranded Helix
49. (UAA - UAG - or UGA) terminates polypeptide synthesis
Synonyms
Termination Codons
Chromosomes
Conjugation
50. Transfer of genetic material between two bacteria that re temporarily joined
Homozygous
Monohybrid Cross
Operator Gene
Conjugation