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

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) Triangular
C) Double Helix
D) Single Helix
E) Rectangular

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

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

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

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

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

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

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

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

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

A) False
B) True

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