TMA2/BIO305

TMA Quiz Questions TMA: TMA2/BIO305 Matric Number:  score=7.50 BIO305 - Molecular Biology Dr. Chukwu Maureen (mchukwu@noun.edu.ng ) 1 The genetic code stored in DNA in form of nucleotide sequence is interpreted by _____ Phenotype expression Gene drift genotype expression Gene expression 2 Gene expression is the fundamental level at which genotypes gives rise to the ____ Gene DNA Phenotype None of the above 3 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 4 Which of the following is the largest type of RNA? tRNA m RNA t RNA r RNA 5 Which of the followings are the most aboundant type of RNA? Trna n RNA Mrna. r RNA 6 The followings are types of RNA except? t RNA r RNA n RNA Mrna 7 Which of the following nitrogenous base is not found in DNA? Thymine Uracil Adenine Quanine 8 DNA is a polymer of _____ Nucleotides Nucleosides Mononucleotides Purines 9 Which of the following nitrogenous base is not present in RNA? Thymine Cytosine Adenine Quanine 10 Which of the following is are componenets of a nucleoside? I A pentose sugar II A Nitrogen base III A phosphotase group I and II II and III I and III All of the above 11 Which of the following are types of nucleic acid? I DNA IIATP III RNA I only II only I and III All of the above 12 How many subunits does a nucleotode consists? 2 3 4 5 13 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 14 A condition in which person inherits three copies of chromosomes 21 is referd to as ____ Turners syndrome Klinefleter syndrome Down syndrome None of the above 15 Which of the following is not an outcome of physical and chemical meiosis? It can damage chromosomes It can alter chromosomes number in a cell It gives rise to embryo with more or less genetic materials In non disjunction, paired chromosomes separate from one another during meiosis 16 In humans, chromosomes are numbered according to their ____ Shape Length Weight Size 17 Who amongst the following determines the sex of a baby in man? Father only Mother only Both parents None of the above 18 The non identical pair of chromosomes found in mammals and birds are called the ______ Zygote Sex chromosomes Autosomes Hemisomes 19 During fertilization the gametes unite to form a cell known as a Gametocyte Embryo Zygophore Zygote 20 Gametes have ______ number of chromosomes Anueploid Diploid Haploid Monoploid