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. Each strand of DNA that is a template in the synthesis of two new daughter helices
Parental (P Generation)
Pyrimidines
Transduction
Complementary Base-Pairing
2. 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
Point Mutation
Gene Mutation
Frameshift Mutation
Okazaki fragments
3. Consists of structural genes
Semiconservative
Regulator Gene
Sex Linked
Operon
4. May infect other bacteria and introduce new genetic arrangements through recombination with the new host cell's DNA
Recombination
tRNA Job
Varions
Synonyms
5. 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
Monocistronic
Genetic Code
Regulator Gene
Inducer-Repressor Complex
6. TRNA binding site for ribosomes to attach to the growing polypeptide chain (peace out site)
Sex Linked
Triplet Code
Mendel's Law of Dominance
P-site
7. Degeneracy/redundancy of the genetic code since there are 64 different codons and only 20 amino acids
Translation
Mendel's Second Law: Law of Independent Assortment
Phenotype
Synonyms
8. Can often affect the expression of a gene -interaction betwen the enironment and the genotype produces the phenotype
Conjugation
Peptide Bond
Environmental Factors
Recessive Allele
9. Progeny phenotypes are apparently blends of the parental phenotypes
Complementary Base-Pairing
Incomplete Dominance
Codons
Gene
10. 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)
Environmental Factors
Bacterial Replication
Ribosomes
Lyse
11. 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
Polyribosome
Semiconservative
Heterozygous
Crosses
12. Only one trait is being studied in this particular mating
Mutations
Chromosomal Breakage
Operon
Monohybrid Cross
13. Self replication ensures that its coded sequence will be passed on to successive generations
Mutagenic Agents
Silent Mutation
Polyribosome
Heredity
14. 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
Genotype
Translocation
Aminoacyl-tRNA synthetase
Binary fission
15. The process by which a foreign plasmid is incorporated into the bacterial chromosome via recombination - creating new inheritable genetic combinations
Translocation
Recessive Allele
Varions
Transformation
16. Alternative forms of genes when it exists in more than one form
Mutagenic Agents
Parental (P Generation)
Alleles
Mendelian Genetics
17. One mRNA strand codes for one polypeptide
Translation
Parental (P Generation)
Monocistronic
Gene
18. Adenine and guanine
Mendel's First Law: Law of Segregation (Four Principles)
Purines
Episomes
Genetic Code
19. 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
Complementary Base-Pairing
Codominance
Okazaki fragments
Homozygous
20. Individuals being crossed
Parental (P Generation)
P-site
Plasmid
Episomes
21. Transfer of genetic material between two bacteria that re temporarily joined
RNA
Conjugation
Nucleotide
DNA Replication
22. Double stranded DNA molecule unwinds and separates into two single strands
Codons
Purines
DNA Replication
Mutable
23. The study of how traits are inherited from one generation to the next
Lagging Strand
Sex Linked Recessives
Genetics
Ribosomes
24. Hydrogen bonds form between the mRNA codon in the A site and its complementary anticodon on the incoming aminoacyl-tRNA complex
Mendel's Law of Dominance
Elongation
Heredity
Promoter gene
25. Structural component of ribsomes and is the most abundant of all RNA types -synthesized in the nucleolus
Translation
Mutable
Ribosomal RNA (rRNA)
Transduction
26. Silent allele -usually assigned capital letters
Nucleotide
Recessive Allele
Pyrimidines
Mendel's First Law: Law of Segregation (Four Principles)
27. The sequence of nontranscribable DNA that is the repressor binding site
Chromosomes
Mutations
Operator Gene
Heredity
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
Promoter gene
tRNA Job
Bacteriophage
Peptide Bond
29. New codon may be a stop codon
Recessive Allele
DNA Replication
Bacteriophage
Nonsense Mutation
30. Bacteriophages that replicate by the lytic cycle - killing their host cells
Purines
Sex Linked
Virulent
Crosses
31. (UAA - UAG - or UGA) terminates polypeptide synthesis
Plasmids
Genotype
Translocation
Termination Codons
32. New codon may code for a different amino acid
Regulator Gene
Bacterial Replication
Nonsense Mutation
Missense Mutation
33. Regulation of gene expression and enables prokaryotes to control their metabolism
Transcription
Testcross
Mendel's First Law: Law of Segregation (Four Principles)
Plasmid
34. Reproduction of bacterial cells and proliferate very rapidly under favorable conditions -asexual prcoess -3 kinds (transformation - conjugation and transduction)
Termination Codons
Purines
Inducible Systems
Binary fission
35. Where protein synthesis occurs
Monocistronic
Lysogenic Cycle
Ribosomes
Aminoacyl-tRNA synthetase
36. 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
Lytic Cycle
Environmental Factors
Plasmid
Mendelian Genetics
37. Nucleic acids are deleted or inserted into the genome sequence (lethal)
Autosomes
RNA
Frameshift Mutation
Lytic Cycle
38. Plasmids that are capable of integration into the bacterial genome
Lagging Strand
Episomes
Genotype
Transcription
39. 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
Antibody resistance
RNA
Lyse
Filial (F generations)
40. 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
Transcription
Sex Linked Recessives
Frameshift Mutation
Ribosomes
41. Codes for the synthesis of a repressor molecule that binds to the operator and blocks RNA polymerase form transcribing the structural genes
Drosophila Melanogaster
Virulent
Regulator Gene
Recombination
42. 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
Bacteriophage
Sex Linked Recessives
A-site
Filial (F generations)
43. Organisms that carry two different alleles
Varions
Mutagenic Agents
Heterozygous
Triplet Code
44. Small circular rings of DNA which contain accessory genes
Aminoacyl-tRNA synthetase
Plasmids
Parental (P Generation)
Anticodon
45. New codon may code for the same amino acid
Triplet Code
Ribosomes
Silent Mutation
Operator Gene
46. 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
Nucleotide
Virulent
Ribosomal RNA (rRNA)
Transformation
47. Progeny generations
Ribosomes
Transduction
Filial (F generations)
Punnet Square Diagram
48. Expressed allele -usually assigned capital letters
Codons
Dominant Allele
Dihybrid Cross
Lagging Strand
49. Cell burst
Genetics
Polypeptide Synthesis
Binary fission
Lyse
50. Structure formed when many ribosomes simultaneously translate a single mRNA molecule
Polyribosome
Translation
Point Mutation
Mendel's Second Law: Law of Independent Assortment