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

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

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

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

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

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

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

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

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

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

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

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

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

A) True
B) False

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