Question Bank for Grade 9 Biology

Using base pair rules, what is the complementary DNA strand for the following sequences of nitrogen bases: ACGGTACAT?

• ACGGTACAT

• TGCCATGTA

• UGCCAUCAU

• TGCCUTCTU

Genetic information is passed from the nucleus to the cytoplasm through

• RNA

• DNA

• Proteins

• None of the above

What is the complementary coding sequence of GACAATGTA, produced as a result of transcription?

• CTGTTACAT

• CUGUUACAU

• GACAATGTA

• CTGTTUCUT

What are the TWO components of the DNA backbone?

• nucleotide and phosphate group

• deoxyribose sugar and nitrogen base

• nitrogen base and nucleotide

• phosphate group and deoxyribose sugar

What is the process that duplicates DNA called?

• DNA Replication

• Transcription

• Translation

• None of the above

Which best defines a gene?

• A gene is a unit of protein that contains the genetic code.

• A gene is a unit of DNA that contains code for the creation of one protein.

• A gene is a unit of DNA that contains the code for the creation of amino acids.

• None of the above

Copying of DNA to RNA is known as

• transcription

• translation

• replication

What is the shape of DNA?

• a double helix

• a spiral staircase

• a twisted ladder

• a curve

What does m stand for in mRNA?

• messenger

• membrane

• molecular

• mickey mouse

Which base-pair rules apply to the double helix DNA structure?

• A-G, C-T

• A-T, C-G

• A-C, G-T