Topic 2A1: DNA Structure

Topic 2A1: DNA Structure

by Jess Racine

Multiple Choice

What is the main focus of biochemisty?

• proteins and their function

• genes and their function

• connecting genes to the proteins they make

Multiple Choice

What is the main focus of genetics?

• proteins and their function

• genes and their function

• connecting genes to the proteins they make

Multiple Choice

What is the main focus of molecular biology?

• proteins and their function

• genes and their function

• connecting genes to the proteins they make

Fill in the Blanks

What is the name of the process that uses DNA as a template to create RNA?

Fill in the Blanks

What holds DNA strands together?

Multiple Choice

What is the name of the nitrogenous base that pairs up with adenine?

• adenine, A

• thymine, T

• guanine, G

• cytosine, C

Multiple Choice

What is the name of the nitrogenous base that pairs up with guanine?

• adenine, A

• thymine, T

• guanine, G

• cytosine, C

Multiple Choice

What is the name of the nitrogenous base that pairs up with thymine?

• adenine, A

• thymine, T

• guanine, G

• cytosine, C

Multiple Choice

What is the name of the nitrogenous base that pairs up with cytosine?

• adenine, A

• thymine, T

• guanine, G

• cytosine, C

Multiple Choice

Which part of a nucleotide is the start of a DNA molecule?

• phosphate group

• sugar

• phosphate

• hydrogen bond

Fill in the Blanks

What are the three parts of a nucleotide?

Open Ended

Define "complementary"

Multiple Choice

What is meant by "antiparallel"?

• The two strands arecomplimentary

• The strands run in opposite directions

• A always pairs with T and G always pairs with C

• All strands are double helices

Open Ended

Why can replication only happen in the 5'--> 3' direction?

Multiple Choice

On which strand can DNA be replicated continuously?

• complementary strand

• lagging strand

• replication fork

• leading strand

Open Ended

What are the two main differences between DNA and RNA?

Multiple Choice

What is transcription?

• The process by which DNA replicates itself

• The process by which DNA is used as a template for RNA

• The process by which DNA strands bind together

• The process by which RNA is used as a template for protein expression

Multiple Choice

What type of genome does a retrovirus have?

• DNA

• RNA

• protein

• carbohydrate