A) Phosphate groups
B) Nucleotides
C) Bases
D) Sugar Molecules

A) Acids, Bases and inorganic salts
B) Genes and Chromosomes X and Chromosomes Y
C) G, T and C Bases
D) Phosphate groups, deoxyribose sugars and nitrogen rich bases

A) Circular
B) Rectangular
C) Triangular
D) Single Helix
E) Double Helix

A) phosphate and sugar molecules
B) phosphate and base molecules
C) base molecules
D) sugar and base molecules

A) sugar molecule pairs
B) nitrogen-rich base pairs
C) phosphate and base molecules
D) phosphate and sugar molecules

A) 0
B) 6
C) 8
D) 2
E) 4

A) C
B) G
C) T
D) A

A) C
B) T
C) A
D) G

A) 0
B) 2
C) 8
D) 4

A) the DNA strand
B) the red blood cell
C) the nucleus of the cell
D) the gene

A) 20 (10 pairs)
B) 50 (25) pairs
C) 46 (23 pairs)
D) 100 (50 pairs)

A) 92 (double a human cell)
B) 46 (same as a human cell)
C) 23 (half that of a normal human cell)
D) 0 (there is no nucleus)

A) 23 (half that of a normal human cell)
B) 46 (same as a human cell)
C) 0 (there is no nucleus)
D) 92 (double a human cell)

A) False
B) True

A) A section of DNA that contains the genetic code
B) Another name for chromosomes
C) Half a chromosome
D) Another name for DNA