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Biology 20 MCQs




Question;The process of making a copy of a DNA molecule is:A. transcription. B. replication. C. translation. D. protein synthesis. Question 2 of 20__________ describes how a cell makes a protein from the protein coding sequence of a gene.A. Transcription B. Gene expression C. Translation D. Gene phrasing Question 3 of 20The process of translation can be broken down into three basic steps. Which of the following is NOT one of these steps?A. Initiation B. Elongation C. Translocation D. Termination Question 4 of 20When only one nucleotide base is involved in a mutation, this is called:A. chromosomal mutation. B. template error. C. point mutation. D. nonsense codon. Question 5 of 20There are four types of chromosomal aberrations. Which of the following does NOT belong in this group?A. Inversions B. Translocations C. Inherent D. Deletions Question 6 of 20Fibers extending from cell pole to cell pole are called the:A. cleavage furrow. B. cell plate. C. cell equator. D. spindle. Question 7 of 20An organelle used during animal cell division is the:A. lysosome. B. mitochondrion. C. Golgi apparatus. D. centriole. Question 8 of 20The time it takes for cells to divide:A. varies, but it takes sophisticated equipment to measure this small difference. B. depends on the health and environment of the cell. C. does not vary at all, but is controlled by an internal clock. D. varies widely and unpredictably in cells of the same local area of the same organism during any specific time period. Question 9 of 20__________ may cause cancer.A. Chemotherapeutic agents B. Mutagenic agents C. The polymerase chain reaction D. Cytokinesis Question 10 of 20The separation of homologous chromosomes is called:A. synapsis. B. segregation. C. mitosis. D. fertilization. Question 11 of 20Different forms of the same gene are referred to as:A. loci. B. alleles. C. homozygotes. D. hybrids. Question 12 of 20The expression of a gene is called:A. probability. B. phenotype. C. genotype. D. pleiotropy. Question 13 of 20In humans, the genes for blood type A and B show lack of dominance to one another and both dominate O. Two type O people would be able to have:A. IO IA IB IAB type children. B. only O type children. C. IO IA type children. D. only AB type children. Question 14 of 20A case of more than one gene influencing one phenotypic characteristic is called:A. pleiotropy. B. polygenic inheritance. C. X-linked. D. monohybrid. Question 15 of 20The sex of mammals is determined by:A. the autosomes they receive. B. the type of sex chromosomes received. C. the number of recessive chromosomes received. D. None of these answers is or may be a factor. Question 16 of 20Using __________ it is possible to show the nucleotide sequence differences among individuals since no two people have the same nucleotide sequences.A. mutagenesis B. polymerase chain reaction C. genetic fingerprinting D. translocation Question 17 of 20The laboratory procedure for copying selected segments of DNA is:A. the polymerase chain reaction. B. translation. C. jumping genes. D. a point mutation. Question 18 of 20The __________ was a 13-year effort to determine the normal or healthy human DNA sequence.A. Embryo Cloning Project (ECP) B. Human Genome Project (HGP) C. Stem Cell Research Project (SRP) D. Gene Therapy Project (GTP) Question 19 of 20__________ reproduces many varieties of fruit trees and other plants by making cuttings of the plant and rooting the cuttings.A. Cloning B. Sexual reproduction C. Meiosis D. Somatic cell transfer Question 20 of 20__________ involves inserting genes, deleting genes, or manipulating the action of genes in order to cure or lessen the effect of genetic diseases.A. Gene therapy B. The role of a DNA librarian C. Genetic counseling D. Genetic therapeutic medicine


Paper#63195 | Written in 18-Jul-2015

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