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

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

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

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

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

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

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

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

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

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

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

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

A) True
B) False

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