Biotechnology Quiz | MCQ | Biotech Test Quiz 02

Biotechnology Quiz | MCQ | Biotech Test Quiz #mcq.CETJOB

1 >>For the same gene, it is possible to patent ?

• (A) expressed sequence tags
• (B) cDNA
• (C) SNPs
• (D) all of the above

Solution all of the above

2 >>Which gene transfer technique involves the use of a fatty bubble to carry a gene into a somatic cell? ?

• (A) electroporation
• (B) liposome transfer
• (C) microinjection
• (D) particle bombardment

Solution liposome transfer

3 >>"Naked" DNA ?

• (A) is free of nucleic acids.
• (B) is free of the cell.
• (C) is free of protein.
• (D) contains just the sugar-phosphate backbone.

Solution is free of protein.

4 >>Which of the following gene-targeted mice have shown that a gene product once thought important is not vital to survival? ?

• (A) neurofibromatosis
• (B) X collagen
• (C) SCID
• (D) sickle-cell

Solution X collagen

5 >>The first drug produced using recombinant DNA technology was ?

• (A) streptokinase.
• (B) tPA.
• (C) insulin.
• (D) penicillin.

Solution insulin.

6 >>____ are the units of heredity. ?

• (A) Cells
• (B) Genes
• (C) Chromosomes
• (D) Alleles

Solution Genes

7 >>Variants of genes are called ____ and arise by a process called ____. ?

• (A) alleles, mutation
• (B) mutants, mutation
• (C) recessives, differentiation
• (D) chromosomes, mitosis

Solution alleles, mutation

8 >>A variant in sequence that is present in at least 1% of a population is called a (an) ?

• (A) gene.
• (B) allele.
• (C) autosome.
• (D) polymorphism.

Solution polymorphism.

9 >>Which of the following is not a potential use for results of DNA microarray testing? ?

• (A) determining the probability that your offspring will carry the gene for a particular trait
• (B) determining which genes are active in cells affected with cancer
• (C) determining whether a particular drug will be toxic for you
• (D) All of the above are potential uses of DNA microarray testing.

Solution determining the probability that your offspring will carry the gene for a particular trait

10 >>Which of the following statements is true regarding genomes? ?

• (A) Humans and chimpanzees share about 50% of their DNA sequences.
• (B) Two members of different races may have more genes in common than two members of the same race.
• (C) The more different DNA sequences of two species are to one another, the more recently two species diverged from a single ancestor.
• (D) All of the above are true regarding genomes.

Solution Two members of different races may have more genes in common than two members of the same race.

11 >>The alleles in a population constitute the ?

• (A) chromosome complement.
• (B) karyotype.
• (C) gene pool.
• (D) allele group.

Solution allele group.

12 >>A gene may have many alleles, but each individual has only two alleles because ?

• (A) having more than two alleles is lethal.
• (B) having more than two alleles unbalances the chromosomes.
• (C) a person has two parents who each contribute one allele.
• (D) a backup set of alleles is necessary in case something goes wrong.

Solution a person has two parents who each contribute one allele.

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13 >>The ____ refers to the allele combinations for particular genes while ____ is the expression of that allele combination. ?

• (A) phenotype, karyotype
• (B) karyotype, phenotype
• (C) genotype, autosome
• (D) genotype, phenotype

Solution genotype, phenotype

14 >>Linda and Ben request prenatal genetic testing to determine if their unborn child has Down syndrome. Cells are collected from the fetus and the chromosomes are examined in a ____ analysis ?

• (A) pedigree
• (B) karyotype
• (C) multifactorial
• (D) Mendelian

Solution karyotype

15 >>Which of the following genetic disorders is not thought to be Mendelian? ?

• (A) cystic fibrosis
• (B) Tay-Sachs disease
• (C) hemophilia
• (D) hypertension

Solution hypertension

16 >>Julie is at risk for developing a genetic disorder. Her absolute risk of developing the disease over her lifetime is 4 in 10. The risk to the general population is 16 in 100. Calculate Julie's relative risk and advise her accordingly. ?

• (A) her relative risk is less than 1: her chance if developing the illness is less than that of the general population
• (B) her relative risk indicates a greater-than-2-fold risk compared to an individual in the general population
• (C) her relative risk indicates that she is as likely to develop the illness as an individual from the general population
• (D) no inferences can be made given the information in question 12

Solution her relative risk indicates a greater-than-2-fold risk compared to an individual in the general population

17 >>How do genetic diseases differ from other diseases? ?

• (A) recurrence risk is predictabl
• (B) presymptomatic testing is possible
• (C) different populations have different characteristic frequencies
• (D) all of the above

Solution all of the above

18 >>A transgenic organism has ?

• (A) genes, other organisms do not.
• (B) genes from different species.
• (C) a dominant phenotype.
• (D) had its genome sequenced.

Solution genes, other organisms do not.

19 >>The technique of ____ attempts to correct certain genetic disorders. ?

• (A) karyotype analysis
• (B) risk assessment
• (C) genomics
• (D) gene therapy

Solution gene therapy

20 >>A 54-year-old man and his 26-year-old son are each accused of committing a rape. Why would DNA fingerprinting be difficult in evaluating this case? ?

• (A) DNA typing requires samples from relatives to compare to the crime scene sample
• (B) father and son are likely to have the same alleles for sequences examined
• (C) we cannot be certain that father and son are biologically related so comparisons are not possible
• (D) none of the above

Solution father and son are likely to have the same alleles for sequences examined