IB Biology A1.2 (SL) Nucleic acids multiple choice quiz

SPM.1A.HL.TZ0.2

• A

• B

• C

• D

24M.1A.SL.TZ1.11

What are components of DNA and RNA?

• A

• B

• C

• D

23M.1A.SL.TZ1.25

The image of the X-ray diffraction of calf thymus DNA was obtained by R. Franklin and R. Gosling in 1953.

What does this image show about the structure of DNA?

• A.  It is associated with histones.

  
  

• B.  It has a helical shape.

  
  

• C.  It contains deoxyribose.

  
  

• D.  It contains four nitrogenous bases.

  
  

23M.1A.SL.TZ1.11

How do DNA and messenger RNA (mRNA) molecules differ in eukaryotes?

• A.  mRNA is twice the size of DNA and is formed from four different bases.

  
  

• B.  DNA contains ribose while mRNA contains deoxyribose.

  
  

• C.  mRNA has the same bases as DNA but contains ribose.

  
  

• D.  DNA has two strands while mRNA has only one.

  
  

23M.1A.SL.TZ2.10

What is bonded to phosphates in a strand of RNA?

• A.  Only carbohydrates

  
  

• B.  Adenine, guanine, cytosine and thymine

  
  

• C.  Adenine, guanine, cytosine and uracil

  
  

• D.  Pentoses and bases

  
  

22M.1A.SL.TZ1.6

What are linked by hydrogen bonds?

• A. Hydrogen and oxygen within a water molecule

  
  

• B. Phosphate and sugar within a DNA molecule

  
  

• C. Base and sugar between DNA nucleotides

  
  

• D. Hydrogen and oxygen in different water molecules

  
  

22M.1A.SL.TZ1.9

A molecule of DNA is found to contain 200 guanine bases, representing 25 % of the total number of bases. How many phosphate groups does this molecule of DNA contain?

• A. 50

  
  

• B. 200

  
  

• C. 800

  
  

• D. 1000

  
  

21M.1A.SL.TZ1.9

The hydrolysis of a pure sample of an organic molecule produces a pentose sugar, thymine, guanine and cytosine. What other substances could be expected to be present in the hydrolysed sample?

• A. RNA

  
  

• B. Uracil

  
  

• C. Phosphate

  
  

• D. ATP

  
  

21M.1A.SL.TZ2.9

Which feature is common to both mRNA and DNA?

• A. Covalent bonds between adjacent nucleotides

  
  

• B. Hydrogen bonds between guanine and cytosine

  
  

• C. Ribose sugar attached to phosphate

  
  

• D. Antiparallel arrangement of polynucleotide strands

  
  

19M.1A.SL.TZ1.7

What is common to RNA and DNA?

• A. Thymine

  
  

• B. Nitrogenous bases

  
  

• C. Histones

  
  

• D. Deoxyribose