TMA4/BIO305

My TMA Home TMA Results My Pending TMA Quick Help My TMATMA InstructionCourse DetailTMA CalendarGrading Message BoardQuick InfoInstructor Message Quiz NoteQuiz Tip - 1Quix Tip - 2 TMA Quiz Questions   TMA: TMA4/BIO305 Matric Number: SCORE=8.00 BIO305 - Molecular Biology Dr. Chukwu Maureen (mchukwu@noun.edu.ng )   1 The non identical pair of chromosomes found in mammals and birds are called the ______ Zygote Sex chromosomes Autosomes Hemisomes 2 The term molecular biology was first used in the year __. 1948 1958 1945 1955 3 In which of the following fields is the knowledge of molecular biology being applied? I. Agriculture, II. Biotechnology, III. medicine. I and II II and III I and III all of the above 4 Which of the following is not true of nucleic acids? They are simple molecules produced by living cells They are principle genetic informational materials The name come from their initial isolation from the nuclie of living cells Some are also found incell cytoplasm 5 Which of the following is not true of chromosomes they are esssential for cellular division they must be replicated they must be passed successfully to their daughter cells they are embedded in thechromatin 6 The following are the shapes of chromosomes except: rod-like spherical filamentous thread-like 7 DNA is a polymer of _____ Nucleotides Nucleosides Mononucleotides Purines 8 Which of the following nitrogenous base is not present in RNA? Thymine Cytosine Adenine Quanine 9 The full genetic information that an organism inherit from the parents is inscribed in __. Coding Phenotype DNA None of the above 10 The set of rules by which information encoded in genetic material;DNA or mRNA sequences is translated into protein amino acids by living cells is called_____ Gene Phenotype Genetic code Phenotype code 11 The order of the nucleotides in a gene specifies the amino acidd sequence of a protein through_____ Transcripton Translation Translocation Transduction 12 Which of the following is not a step involved in chain elongation? Addition of amino acids Codon recognition translation Peptide bond 13 The smallest genetic unit that can mutate is a __. ricon loci cistron muton 14 A portion of DNA specifying a single polypeptide chain is referred to as a __. muton gene ricon cistron 15 The following are the functions of genetic materials except: Determine the shape of offspring Determine the nform of offspring Determine the sex of offspring Determine the function of offspring 16 Which of the following is the largest type of RNA? tRNA m RNA t RNA r RNA 17 Which of the following is not a step involved in the p[rocess of protein synthesis? Chain initiation Chain maturation Chain termination Chain elongation 18 How many steps has the central dogma involved in protein synthesis? 3 4 2 5 19 Which of the following are the instructions for making specific proteins? Chromosomes DNA RNA Gene 20 Which of the following is not true of transcription? It is a process of creating an equivalent RNAcopy of a sequence of DNA It involves four simple steps It involves the production of Mrna During the process, DNAsequence is read byRNA