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

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

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

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

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

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

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

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

A) 8
B) 4
C) 0
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) 20 (10 pairs)
C) 100 (50 pairs)
D) 46 (23 pairs)

A) 46 (same as a human cell)
B) 92 (double 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) 92 (double a human cell)
C) 0 (there is no nucleus)
D) 46 (same as a human cell)

A) False
B) True

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