DNA and Protein Synthesis introduction

Genes contain instructions for assembling _______________.

• Nucleosomes
• Proteins
• Purines
• Pyrimidines

Which of the following are found in both DNA and RNA?

• ribose, phosphate groups, and adenine
• phosphate groups, guanine, and cytosine
• phosphate groups, guanine, and thymine
• deoxyribose, phosphate groups, and guanine

Unlike DNA, RNA contains...

• a phosphate group
• thymine
• guanine
• uracil

In eukaryotes, DNA:

• floats freely in the cytoplasm
• is found in the nucleus
• is wrapped within the ribosome
• is circular

What is a codon?

• a sequence of 3 amino acids
• a sequence of three nitrogen bases
• a sequence of 3 enzymes
• a sequence of 3 proteins

The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?

• ribose sugar and base
• ribose sugar and phosphate group
• nitrogen base and deoxyribose sugar
• deoxyribose sugar and phosphate group
  

Which type of RNA delivers the genetic code to the ribosome?

• tRNA
• mRNA
• rRNA
• tmRtmRNA

What is the function of transfer RNA?

• It is a part of the ribosome.
• It bonds to other RNA molecules, leading to their destruction.
  
• It delivers the correct amino acid to the ribosome.
• It carries the information coding for the amino acid sequence of a protein.

Which nucleotide is complementary to adenine?

• adenine
• thymine
• cytosine
• guanine

Which of the following best defines a gene?

• A diploid cell containing two sets of chromosomes
• A unit made up of chromosomes that control for a specific trait
• A segment of DNA that codes for a particular protein
• All the other answers are correct.