BSCS Biology: A Molecular Approach

Chapter 1: The Chemistry of Life

Genetic Coding in Cells

1.
Who first published a paper proposing a model for the structure of the DNA molecule that is still accepted today?
A)Maurice Wilkins
B)Rosalind Franklin
C)Rosalind Franklin and Maurice Wilkins
D)James Watson and Frances Crick
2.
Which structure within the DNA molecule forms part of the connecting bond between the two long chains in the double helix?
A)the phosphate group
B)the nitrogen base
C)the deoxyribose sugar
D)the fatty acid
3.
The function of DNA is to form the ____, or genetic information that is passed from parents to offspring.
A)genes
B)cytosines
C)lipids
D)amino acids
4.
How long are the codons that are translated by the cell when proteins are built from DNA molecules?
A)three nucleotides
B)four nucleotides
C)one millimeter
D)one micron
5.
The molecule shown in the illustration is what type of nucleic acid?

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A)RNA
B)amino acid
C)lipid
D)DNA
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