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

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

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

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

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

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

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

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

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

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

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

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

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)

A) True
B) False

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