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

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

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

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

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

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

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

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

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

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

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) 92 (double a human cell)
D) 0 (there is no nucleus)

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

A) True
B) False

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