Biology Ch.11 Review

What did Griffith observe when he injected a mixture of heat-killed, disease-causing bacteria and live harmless bacteria into mice?

• The mice were unaffected.
• The harmless bacteria died.
• The mice died.
• The disease-causing bacteria changed into harmless bacteria.

Avery's experiments showed that bacteria are transformed by:

• DNA
• RNA
• carbohydrates
• proteins

Which of the following is a nucleotide found in DNA? 

• ribose + phosphate group + thymine
• ribose + phosphate group + uracil
• deoxyribose + phosphate group + cytosine
• deoxyribose + phosphate group + uracil

DNA replication results in two DNA molecules,

• each with two original strands
• one with two new strands and the other with two original strands
• each with two new stands
• each with one new strand and one original strand

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases

• TCGAAC
• GATCCA
• AGCTTG
• GAUCCA

What happens during the process of translation?

• Copies of DNA molecules are made.
• Transfer RNA is made from messenger RNA
• The cell uses information from messenger RNA to produce proteins.
• Messenger RNA is made from DNA.

How many codons are needed to specify three amino acids?

• 12
• 9
• 6
• 3

What is produced during transcription?

• proteins
• RNA molecules
• DNA molecules
• RNA polymerase

During translation, the type of amino acid that is added to the growing polypeptide depends on the

• codon on the mRNA and the anticodon on the tRNA to which the amino acid is attached.
• codon on the tRNA only.
• anticodon on the mRNA only.
• anticodon on the tRNA to which the amino acid is attached only.

Genes contain instructions for assembling

• purines
• pyrimidines
• proteins
• nucleosomes