Chapter 11 Pre-Assessment

DNA is composed of nucleotide subunits, each of which contains a -

• ribose molecule

• phosphate group

• uracil base

• all of the above

• I honestly have no idea...

The two strands of DNA in the double helix structure are held together by which of the following interactions?

• Van der Waals forces

• Covalent Bonds

• Ionic Bonds

• Hydrogen Bonds

• I honestly have no idea...

The process of cell division requires the parent cell to synthesize more DNA molecules. These molecules are produced by which of the following mechanisms?

• Translation

• Replication

• Transcription

• Mitosis

• I honestly have no idea...

Tags

NGSS.HS-LS3-2

Which of the following do DNA and RNA have in common?

• Both are double-stranded

• Both contain ribose molecules

• Both contain phosphate groups

• Both contain thymine

• I honestly have no idea...

Translation is the process of synthesizing protein from RNA. Which of the following molecules transports amino acids from the cytoplasm to the ribosome for translation?

• mRNA

• rRNA

• tRNA

• All of the above

• I honestly have no idea...

There are 64 different mRNA codons in the genetic code. How many possible codons would there be if a codon consisted of only two nucleotides?

• 64

• 32

• 16

• 8

• I honestly have no idea...

In most organisms, the start of translation is signaled by an AUG codon. What is the first amino acid in most proteins?

• Proline

• Leucine

• Isoleucine

• Methionine

• I honestly have no idea...

Some mutations are more harmful than others are. Which of the following types of mutations is usually less severe?

• Frameshift mutation

• Point mutation

• Chromosomal mutation

• Deletion

• I honestly have no idea...

Tags

NGSS.HS-LS3-2

Some mutagens, such as the sun's UV radiation, cause mutations in somatic cells, such as dermal cells. Which of the following is NOT likely to occur as a result of such mutation?

• Skin cancer may develop in the exposed individual

• Skin cancer may develop in the offspring of the exposed individual

• Exposed skin cells may function improperly

• All of the above consequences are likely

• I honestly have no idea...

Tags

NGSS.HS-LS3-2

What is the complementary mRNA sequence to the DNA sequence A-T-T-G-C-A?

• T-A-A-C-G-T

• U-A-A-C-G-T

• U-A-A-C-G-U

• T-A-A-G-C-U

• I honestly have no idea...