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

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

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

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

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

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

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

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

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

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

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

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