Homework – lecture 1

•Which of the following choices expresses the characteristics of the bacteria resulted from the process of bacterial transformation? 

•Is/are considered the first to explain the phenomenon of bacterial transformation based on biochemical analysis

•The genetic material in bacteriophage is .. 

•The genetic material RNA is found in 

•If the number of purine nucleotides in a DNA molecule equals 180 nucleotides, the number of turns in this molecule is .

•A segment of DNA molecule is formed of 6 turns, therefore the number of free phosphate groups in this segment is

•What is the number of nitrogenous base-pairs in a part of DNA molecule that contains 150 turns ? 

•Which of the following choices is correct about deoxyribonuclease enzyme? 

•A group of experiments was carried out on healthy mice to study the pneumonia bacteria, using specific enzymes and the two bacterial stains (S), (R) to inject the mice, the results were as shown in the following table

•Which of the following represent (X), (Y), (Z) and (L) enzymes respectively ? …

•Which of the following choices is correct about the bacteriophage? 

•The ratio between the number of fully formed viruses released from the bacterial cell after about half an hour and after about an hour after the phage attacks a bacterial culture is 

•all of the following statements are correct, except ……….

•Study the opposite figure and answer: 

•The figure represents the composition of the structural unit ……..

•All the following choices are correct about the sugar molecule that is included in the structure of DNA except,…

•the number of types of chemical elements included in the structure of a DNA nucleotide is ……

•The ratio between the amount of DNA in uterus cells and the amount of DNA in kidney cells equals  

•Which of the following  is correct according to the produced cells from the meiotic division of a primary oocyte in a mammalian ovary ?  

•If half the amount of DNA in the scrotum cell of a horse equals (X) . So , its liver cell has….. amount of DNA

•The opposite figure represents a model for DNA molecule, if the distance between (X), (Y) equals (A). So, the distance between  Z) ,(L) equals……….. 

•All the following are from Franklin’s studies on the DNA structure, except ………

•From the double ringed nitrogenous bases that binds by three hydrogen bonds is 

•From the pyrimidine bases that binds by two hydrogen bonds is 

•The process by which the living organism cells restore the original quantity of DNA is …….

•From Griffith’s experiments, we can conclude that  

•From the opposite figure that shows an experiment to prove that DNA is the genetic material, each of (X) and (Y) represents ……… elements respectively.

•The number of H-bonds required to link the two strands of DNA in the opposite figure is …. 

•Which  of the following bind together by a covalent bond to form the DNA backbone ?