ThatQuiz ספריית תרגולים פתור תרגול זה עכשיו
DNA the Molecule
נתרם על ידי: Worthington
  • 1. DNA is made up of many
A) Nucleotides
B) Sugar Molecules
C) Bases
D) Phosphate groups
  • 2. Nucleotides have three main parts
A) Acids, Bases and inorganic salts
B) Phosphate groups, deoxyribose sugars and nitrogen rich bases
C) G, T and C Bases
D) Genes and Chromosomes X and Chromosomes Y
  • 3. The general shape of DNA is a
A) Single Helix
B) Circular
C) Double Helix
D) Triangular
E) Rectangular
  • 4. In the DNA structure (twisted rope ladder) the uprights of the ladder are alternating
A) base molecules
B) sugar and base molecules
C) phosphate and base molecules
D) phosphate and sugar molecules
  • 5. In the DNA structure (twisted rope ladder) the runs of the ladder are made up of
A) sugar molecule pairs
B) nitrogen-rich base pairs
C) phosphate and base molecules
D) phosphate and sugar molecules
  • 6. How many bases are there (in DNA)?
A) 8
B) 2
C) 4
D) 6
E) 0
  • 7. Nitrogen-rich bases pair up (complementary base pairing) in one way. A goes with
A) C
B) A
C) G
D) T
  • 8. Nitrogen-rich bases pair up (complementary base pairing) in one way. C goes with
A) C
B) T
C) A
D) G
  • 9. How many different rungs could be on the ladder of a DNA strand?
A) 0
B) 4
C) 8
D) 2
  • 10. Chromosomes are found in
A) the DNA strand
B) the nucleus of the cell
C) the gene
D) the red blood cell
  • 11. Human Cells have how many chromosomes
A) 100 (50 pairs)
B) 50 (25) pairs
C) 46 (23 pairs)
D) 20 (10 pairs)
  • 12. Sperm and Egg cells have how many chromosomes
A) 0 (there is no nucleus)
B) 92 (double a human cell)
C) 23 (half that of a normal human cell)
D) 46 (same as a human cell)
  • 13. Red blood cells have how many chromosomes
A) 0 (there is no nucleus)
B) 23 (half that of a normal human cell)
C) 92 (double a human cell)
D) 46 (same as a human cell)
  • 14. True or False: All animal cells have the same number of chromosomes as human cells (23 pairs)
A) False
B) True
  • 15. What is a gene?
A) A section of DNA that contains the genetic code
B) Half a chromosome
C) Another name for chromosomes
D) Another name for DNA
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