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

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

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

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

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

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

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

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

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

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

A) 46 (23 pairs)
B) 50 (25) pairs
C) 20 (10 pairs)
D) 100 (50 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) 92 (double a human cell)
B) 0 (there is no nucleus)
C) 23 (half that of a normal human cell)
D) 46 (same as a human cell)

A) True
B) False

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