Protein Synthesis

A sugar, a phosphate group, and a nitrogen base form the building blocks of which organic compound?

• carbohydrates
• nucleic acids
• lipids
• proteins

Which of the following is the template for the production of RNA within a cell?

• DNA
• protein
• ATO
• carbohydrate

which process is shown?

• diffusion
• repiration
• recombination
• translation

When an extra base is inserted into the DNA sequence of a gene, the protein doesn't work. Which explains why?

• the base increases rate of translation
• the base causes DNA to be transcribed in opposite direction
• the inserted base causes the codons in the sequence to be incorrect for the desired protein
• the base signals enzymes to translate DNA rather than RNA

What molecules do both DNA and RNA contain?

• uracil
• nucleotides
• thymine
• deoxyribose

The genetic material of an organism is composed of

• lipids
• proteins
• deoxyribonucleic acids
• complex carbohydrates

Which of the following best describes how DNA and RNA are similar?

• they both contain A and T
• They both have a double helix
• They are both composed of 5 different nucleotides
• they both have C and G

The DNA sequence ATCAGCGCTGGC is part of a gene. how many amino acids are coded for by this message?

• 4
• 8
• 12
• 20

A scientist puts nucleotide chains of UUUUUU in a test tube under conditions allowing protein synthesis. Soon they are only amino acids chains of phenylalinine. What does the experiment indicate?

• phenylalanine is composed of uracil
• UUU codes for phenylalanine
• protein synthesis malfunctions in test tubes
• proteins contain one kind of amino acids

One human disease is caused by a change in one codon in a gene from GAA to GUA. The disease is a result of 

• a mutation
• crossing-over
• a meiosis error
• polyploidy