IB Bio SL DNA & Cell Division

Select the nucleic acid molecules, chosen from the list below, that is best described by the statement shown.

Is found within the nucleus

• DNA only

• RNA only

• Both DNA and RNA

• Neither DNA nor RNA

Which phase of mitosis is shown in the diagram?

• Metaphase

• Anaphase

• Prophase

• Telophase

Which statement est describes the relationship that exists among proteins, DNA, and cells?

• DNA is made up of proteins, which tell a cell how to function.

• Proteins combine to produce cells, which produce DNA.

• Proteins are made up of DNA, which determines the cells that are produced.

• Cells contain DNA, which controls the production of proteins.

What is the cause of sickle cell anemia?

• Errors in the translation of mRNA

• A base substitution in DNA

• A transcription error that replaces A with U

• A mutation that leads to glutamic acid instead of valine

What ensures that mitosis produces two genetically identical nuclei?

• One of each of the twenty-three types of chromosome is pulled to each pole of the cell by spindle fibers.

• Identical chromatids are pulled to opposite poles by spindle fibers.

• DNA molecules are moved to the equator of the cell where they are replicated.

• Half of the chromosomes are pulled to each centriole by mesosomes.