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

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

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

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

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

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

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

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

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

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

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

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

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) False
B) True

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