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. 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
Homozygous
Nondisjunction
Aminoacyl-tRNA synthetase
Punnet Square Diagram
2. Degeneracy/redundancy of the genetic code since there are 64 different codons and only 20 amino acids
Chromosomes
Ribosomes
Synonyms
Translocation
3. (AUG) ribosome scans the mRNA until it bonds to this (methionine) and UAC on anticodon of tRNA
Mendel's Law of Dominance
Dominant Allele
Start Codon
Synonyms
4. Progeny generations
Mendel's Law of Dominance
Filial (F generations)
Monocistronic
Synonyms
5. Developed the basic principles of genetics through his experiments with the garden pea
Sex Linked
Point Mutation
Mendelian Genetics
Transcription
6. Can often affect the expression of a gene -interaction betwen the enironment and the genotype produces the phenotype
Inducer-Repressor Complex
Transformation
Environmental Factors
Alleles
7. 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
RNA
Mendel's Law of Dominance
Synonyms
Operon
8. One mRNA strand codes for one polypeptide
Transformation
Bacteriophage
Monocistronic
Incomplete Dominance
9. Chromosome fragment
Recombination
Aminoacyl-tRNA synthetase
Mendel's Law of Dominance
Plasmid
10. DNA language must be translated by mRNA in such a way as to produce the 20 words in the amino acid language
Triplet Code
Operator Gene
Peptide Bond
Gene
11. Structure formed when many ribosomes simultaneously translate a single mRNA molecule
Environmental Factors
Regulator Gene
Translocation
Polyribosome
12. System where the repressor is inactive until it combines with the corepressor
Operon
Mendelian Genetics
Inducible Systems
Repressible Systems
13. Cell burst
Bacterial Replication
Lyse
Dihybrid Cross
Lagging Strand
14. Self replication ensures that its coded sequence will be passed on to successive generations
Monohybrid Cross
Leading Strand
Bacterial Replication
Heredity
15. Nucleic acid is replaced by another nucleic acid
Synonyms
Point Mutation
Pyrimidines
Non-Mendelian Inheritance Patterns
16. System where the repressor binds to the operator - forming a barrier that prevents RNA polymerase from transcribing the structural genes
Inducible Systems
Transcription
Lytic Cycle
Missense Mutation
17. Diagnostic tool to determine the genotype of an organism -Only with a recessive phenotype can genotype be predicted with 100% accuracy -if dominant phenotype is expressed - the genotype can be either homozygous dominant or heterozygous -used to deter
Testcross
Bacterial Genome
Chromosomes
Silent Mutation
18. Where protein synthesis occurs
Inducer-Repressor Complex
Frameshift Mutation
Ribosomes
Transformation
19. The process by which a foreign plasmid is incorporated into the bacterial chromosome via recombination - creating new inheritable genetic combinations
Crosses
Transformation
Mutations
Transcription
20. Only one trait is being studied in this particular mating
Operon
Point Mutation
Transformation
Monohybrid Cross
21. 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
Non-Mendelian Inheritance Patterns
Genetic Code
Sex Linked Recessives
Bacterial Genome
22. Alternative forms of genes when it exists in more than one form
Monohybrid Cross
Synonyms
Mendelian Genetics
Alleles
23. New codon may be a stop codon
Operon
Polypeptide Synthesis
Nonsense Mutation
Genetic Code
24. 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
Translocation
Lysogenic Cycle
Messenger mRNA
Double-Stranded Helix
25. Each strand of DNA that is a template in the synthesis of two new daughter helices
Promoter gene
Complementary Base-Pairing
Homozygous
Missense Mutation
26. Binds to the incoming aminoacyl-tRNA complex (Arriving site)
Regulator Gene
Gene
A-site
Alleles
27. 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
Varions
A-site
Genotype
Messenger mRNA
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
Genotype
Homozygous
Lytic Cycle
Translation
29. Hydrogen bonds form between the mRNA codon in the A site and its complementary anticodon on the incoming aminoacyl-tRNA complex
Elongation
Dominant Allele
Frameshift Mutation
Nondisjunction
30. Formed between the amino acid attached to the tRNA in the A site and the fmet attached to the tRNA in the P site
Transcription
Transfer RNA (tRNA)
Peptide Bond
Repressible Systems
31. Complex that can't bind to the operator - thus permitting transcription
P-site
Gene
Chromosomal Breakage
Inducer-Repressor Complex
32. New codon may code for the same amino acid
Frameshift Mutation
Recessive Allele
Phenotype
Silent Mutation
33. May occur spontaneously or be induced by environmental factors
Chromosomal Breakage
Sex Linked Recessives
Aminoacyl-tRNA synthetase
Nucleotide
34. The noncoding sequence of DNA that serves as the initial binding site for RNA polymerase
Backcross
Sex Linked Recessives
Promoter gene
Repressible Systems
35. The parents differ in two traits - as long as the genes are on separate chromosomes and assort independently during meiosis
Transfer RNA (tRNA)
Dihybrid Cross
Chromosomes
Mutagenic Agents
36. Sugar-phosphate chains on the outside of the helix and the bases on the inside -C-G - T-A -AKA Watson Crick DNA model
Double-Stranded Helix
Missense Mutation
Phenotype
Bacterial Genome
37. New codon may code for a different amino acid
Lagging Strand
Regulator Gene
Aminoacyl-tRNA synthetase
Missense Mutation
38. Each new daughter helix contains an intact strand from the parent helix and a newly synthesized strand
Environmental Factors
Heterozygous
Peptide Bond
Semiconservative
39. Expressed allele -usually assigned capital letters
Elongation
Dominant Allele
Monohybrid Cross
Transduction
40. Begins at a unique origin of and proceeds in both directions simultaneously
Binary fission
Bacterial Replication
Recessive Allele
Backcross
41. Brings amino acids to the ribosomes in the correct sequence for polypeptide synthesis -recognizes both the amino acid and the mRNA codon
DNA Replication
Plasmid
Missense Mutation
tRNA Job
42. Complementary to one of the mRNA codons
Mendel's Second Law: Law of Independent Assortment
Semiconservative
Incomplete Dominance
Anticodon
43. Codes for the synthesis of a repressor molecule that binds to the operator and blocks RNA polymerase form transcribing the structural genes
Peptide Bond
Episomes
Gene
Regulator Gene
44. Physical manifestation of the genetic makeup
Lytic Cycle
Inducible Systems
Phenotype
Backcross
45. Basic unit of heredity
Gene Mutation
Peptide Bond
Ribosomes
Gene
46. Plasmids that are capable of integration into the bacterial genome
Mutations
Episomes
Varions
DNA Replication
47. Adenine and guanine
Chromosomal Breakage
Incomplete Dominance
Purines
Okazaki fragments
48. May be found on the plasmids and transferred into recipient cells along with these factors
Parental (P Generation)
Antibody resistance
Inducer-Repressor Complex
Aminoacyl-tRNA synthetase
49. Individuals being crossed
Chromosomes
Inducer-Repressor Complex
Parental (P Generation)
Silent Mutation
50. 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
Lagging Strand
Drosophila Melanogaster
RNA
A-site