7th Grade DNA: Question Preview (ID: 2911)

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DNAis made of subunits called what?
a) proteins
b) nucelotides
c) traits
d) deoxyribonucleic acid

Nucleotides are made of sugar, a phosphate and a
a) base
b) ribosome
c) gene
d) protein

Who discovered that the amount if adenine in DNA always equals the amount of thymine?
a) Rosalind Franklin
b) Francis Crick
c) Erwin Chargaff
d) James Watson

What scientist made images of DNA by using X-ray diffraction?
a) Rosalind Franklin
b) Francis Crick
c) Erwin Chargaff
d) James Watson

What did Watson and Crick\'s model of DNA look like?
a) a ball
b) a long, twisted ladder
c) links in a chain
d) a straight line

A string of nucleotides that has information for making one trait is
a) a protein
b) a cell
c) an amino acid
d) a gene

Each set of three bases is a code for
a) a specific cell
b) a specific amino acid
c) a specific ribosome
d) a specific chromosome

The first step in making a protein is
a) RNA copying DNA
b) amino acids linked together
c) mRNA going to ribosome
d) transfer RNA matching mRNA

What is the type of mutation where a bas is added to the gene?
a) deletion
b) ultraviolet
c) insertion
d) substitution

Using DNA to identify who committed a cirme is
a) genetic engineering
b) DNA cloning
c) genetic disease
d) DNA fingerprinting

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