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

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

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

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

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

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

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

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

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

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

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

A) 23 (half that of a normal human cell)
B) 46 (same as a 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) 46 (same as a human cell)
D) 92 (double a human cell)

A) False
B) True

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