7SCI-Q4-T16-L 10.3 - DNA and Genetics

What are the four nucleotides that shape DNA?

• Adenine, Cytosine, Guanine, Thymine

• Adenine, Uracil, Guanine, Thymine

• Adenine, Cytosine, Uracil, Thymine

• Adenine, Cytosine, Guanine, Uracil

Which nucleotide pairs with thymine in DNA?

• Cytosine

• Guanine

• Adenine

• Uracil

What is the role of mRNA in protein synthesis?

• Forms ribosomes

• Transfers amino acids

• Carries DNA instructions to ribosomes

• Decodes DNA into proteins

What process involves mRNA being decoded by ribosomes?

• Replication

• Translation

• Mutation

• Transcription

What type of mutation involves a single base pair substitution?

• Insertion

• Deletion

• Point Mutation

• Frame Shift

What can be a result of a mutation?

• Only harmful effects

• Only beneficial effects

• Altered protein function

• No effect at all

What is genetic engineering primarily concerned with?

• Creating new species

• Manipulating DNA to modify organisms

• Cloning animals

• Preserving endangered species

What does recombinant DNA involve?

• Cloning identical organisms

• Combining DNA from different sources

• Removing DNA from cells

• Creating synthetic DNA

What is the purpose of artificial selection in plants?

• To create new plant species

• To enhance crop yield and quality

• To eliminate pests

• To increase plant height

What is an example of genetically engineered plants?

• Plants that grow faster

• Plants with pest resistance

• Plants with larger leaves

• Plants that require less water