Bio Gd 9 EOY 1

Unlike DNA, RNA contains

• adenine

• uracil

• phosphate groups

• thymine

What is produced during transcription?

• RNA molecules

• DNA molecules

• RNA polymerase

• proteins

How many nucleotides are needed to specify three amino acids

• 3

• 6

• 9

• 12

What happens during translation?

• Messenger RNA is made from a DNA code

• The cell uses a messenger RNA code to make proteins

• Transfer RNA is made from a messenger RNA code

• Copies of DNA molecules are made

Which is the correct sequence of the transfer of information in most organisms?

• protein to DNA to RNA

• RNA to DNA to protein

• DNA to RNA to protein

• RNA to protein to DNA

Suppose that part of an amino acid sequence of a protein changed from tyrosine-prolineglycine-alanine to tyrosine-histidine-glycine-alanine. This change was most likely caused by a point mutation called a(n)

• Chromosomal

• Deletion

• Insertion

• Substitution

During transcription, ______________________________________ binds to DNA and assembles nucleotides into a strand that is complementary to the DNA template.

• RNA polymerase

• RNB polymerase

Which of the following is a nucleotide found in DNA?

• adenine + phosphate group + thymine

• cvystosine + phosphate group + guanine

• deoxyribose + phosphate group + polymerase

• deoxyribose + phosphate group + cytosine

Because or base pairing in DNA, the percentage of

• adenine molecules in DNA is about equal to the percentage of guanine molecules

• thymine molecules in DNA is about equal of the percentage of adenine molecules

• adenine molecules in DNA is much greater than the percentage of thymine molecules

• cytosine molecules in DNA is much greater than the percentage of guanine molecules

Which of the following forms a base pair with thymine?

• deoxyribose

• adenine

• guanine

• cytosine