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. Formed between the amino acid attached to the tRNA in the A site and the fmet attached to the tRNA in the P site
Dominant Allele
Lagging Strand
Binary fission
Peptide Bond
2. 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
Punnet Square Diagram
Transcription
Lysogenic Cycle
Purines
3. 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)
Antibody resistance
Ribosomes
Triplet Code
Repressible Systems
4. TRNA binding site for ribosomes to attach to the growing polypeptide chain (peace out site)
P-site
Double-Stranded Helix
Plasmid
Dihybrid Cross
5. Transfer of genetic material between two bacteria that re temporarily joined
Homozygous
Antibody resistance
Monocistronic
Conjugation
6. An organism with a dominant phenotype of unknown genotype (Ax) is crossed with a phenotypically recessive organism
Dominant Allele
Backcross
Parental (P Generation)
Lagging Strand
7. 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
Nonsense Mutation
Anticodon
Autosomes
8. Synthesized discontinuously in the 5'->3' direction (since DNA polymerase synthesizes only in that direction) as a series Okazaki fragments
Lagging Strand
Complementary Base-Pairing
Repressible Systems
Codominance
9. 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
Pyrimidines
Conjugation
Bacterial Genome
DNA
10. The study of how traits are inherited from one generation to the next
Aminoacyl-tRNA synthetase
Genetics
Crosses
RNA
11. Genes that are located on the X or Y chromosome -in humans - most are located on the X
Dominant Allele
Codons
Sex Linked
Heterozygous
12. 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
13. Structure formed when many ribosomes simultaneously translate a single mRNA molecule
Antibody resistance
Polyribosome
Episomes
Point Mutation
14. Binds to the incoming aminoacyl-tRNA complex (Arriving site)
Monohybrid Cross
Point Mutation
A-site
Transduction
15. Sugar-phosphate chains on the outside of the helix and the bases on the inside -C-G - T-A -AKA Watson Crick DNA model
Mendel's Second Law: Law of Independent Assortment
Phenotype
Double-Stranded Helix
Gene Mutation
16. Progeny phenotypes are apparently blends of the parental phenotypes
Incomplete Dominance
Complementary Base-Pairing
Purines
A-site
17. Dominant allele is expressed in the phenotype
18. Occurs when fragments of the bacterial chromosome accidentally become packaged into viral progeny produced during a viral infection
Transduction
Genotype
Punnet Square Diagram
Sex Linked Recessives
19. Self replication ensures that its coded sequence will be passed on to successive generations
Heredity
Elongation
Nucleotide
Ribosomes
20. Codes for the synthesis of a repressor molecule that binds to the operator and blocks RNA polymerase form transcribing the structural genes
Anticodon
Mendel's Second Law: Law of Independent Assortment
Double-Stranded Helix
Regulator Gene
21. Plasmids that are capable of integration into the bacterial genome
DNA
Episomes
Monohybrid Cross
Mutable
22. Small circular rings of DNA which contain accessory genes
Plasmids
Point Mutation
Genotype
Mutations
23. Each strand of DNA that is a template in the synthesis of two new daughter helices
Semiconservative
Sex Linked Recessives
Mendel's Law of Dominance
Complementary Base-Pairing
24. Include incomplete dominance - and codominance
Heterozygous
Nucleotide
Triplet Code
Non-Mendelian Inheritance Patterns
25. The sequence of nontranscribable DNA that is the repressor binding site
Operator Gene
DNA
Bacterial Replication
Polyribosome
26. Induce mutations -include cosmic rays - X rays - UV rays - and radioactivity
Binary fission
Genetic Code
Punnet Square Diagram
Mutagenic Agents
27. Consists of a single circular chromosome located in the nucleoid region of the cell
Genotype
Purines
Bacterial Genome
Silent Mutation
28. Each new daughter helix contains an intact strand from the parent helix and a newly synthesized strand
Transcription
Aminoacyl-tRNA synthetase
Dominant Allele
Semiconservative
29. Bacteriophages that replicate by the lytic cycle - killing their host cells
Codons
Elongation
Virulent
Environmental Factors
30. One mRNA strand codes for one polypeptide
Start Codon
Mendel's First Law: Law of Segregation (Four Principles)
Monocistronic
Promoter gene
31. Developed the basic principles of genetics through his experiments with the garden pea
Mendel's Law of Dominance
Mendelian Genetics
Genetic Code
Autosomes
32. The parents differ in two traits - as long as the genes are on separate chromosomes and assort independently during meiosis
Monohybrid Cross
Dihybrid Cross
Mutagenic Agents
Sex Linked Recessives
33. Organisms that contain two copies of the same allele
Plasmid
Homozygous
Conjugation
Antibody resistance
34. Alternative forms of genes when it exists in more than one form
Double-Stranded Helix
Codominance
Alleles
Polypeptide Synthesis
35. 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
Varions
Lysogenic Cycle
Translation
Complementary Base-Pairing
36. Reproduction of bacterial cells and proliferate very rapidly under favorable conditions -asexual prcoess -3 kinds (transformation - conjugation and transduction)
Filial (F generations)
tRNA Job
Purines
Binary fission
37. Cell burst
Lyse
Plasmid
tRNA Job
Ribosomes
38. Initiation - elongation - and termination
Filial (F generations)
Lysogenic Cycle
Polypeptide Synthesis
Bacteriophage
39. The noncoding sequence of DNA that serves as the initial binding site for RNA polymerase
Frameshift Mutation
Promoter gene
Anticodon
Sex Linked
40. Begins at a unique origin of and proceeds in both directions simultaneously
Genetic Code
Punnet Square Diagram
Gene Mutation
Bacterial Replication
41. Can often affect the expression of a gene -interaction betwen the enironment and the genotype produces the phenotype
Environmental Factors
Nonsense Mutation
Phenotype
Monohybrid Cross
42. 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
Mutable
P-site
Punnet Square Diagram
Environmental Factors
43. Complex that can't bind to the operator - thus permitting transcription
Inducer-Repressor Complex
Dominant Allele
Mendel's Second Law: Law of Independent Assortment
Recessive Allele
44. New codon may be a stop codon
Nonsense Mutation
P-site
Heterozygous
Semiconservative
45. Basic unit of heredity
Promoter gene
Filial (F generations)
Gene
Gene Mutation
46. Brings amino acids to the ribosomes in the correct sequence for polypeptide synthesis -recognizes both the amino acid and the mRNA codon
Heredity
Crosses
Autosomes
tRNA Job
47. Regulation of gene expression and enables prokaryotes to control their metabolism
Heterozygous
Transcription
Leading Strand
Pyrimidines
48. Expressed allele -usually assigned capital letters
Purines
Dominant Allele
Varions
Point Mutation
49. Process whereby mRNA codons are translated intoa sequence of amino acids -occurs in cytoplasm and involves tRNA - ribosomes - mRNA - amino acids - enzymes - and other proteins
Transcription
Alleles
Translation
Repressible Systems
50. The process by which a foreign plasmid is incorporated into the bacterial chromosome via recombination - creating new inheritable genetic combinations
Anticodon
Transformation
Crosses
Binary fission