Unit 6A Study Guide/Review

Which of the following are true statements regarding the relationship among DNA, genes, and chromosomes?

• Genes are found on chromosomes.

• Chromosomes are made up of DNA and proteins

• DNA is a location on a gene

• Genes are made up of chromosomes and proteins

• Chromosomes are found on DNA.

Genes contain instructions for assembling which of the following?

• proteins

• chromosomes

• carbohydrates

• cells

Why is the nucleotide sequence of DNA important?

• It specifies the type of sugar found.

• It specifies the type of hydrogen bonds formed.

• It specifies the genetic code used to make proteins.

• It specifies the phosphate bonds formed.

Which part of DNA carries genetic information?

• The deoxyribose sugar.

• The phosphate sugar backbone

• The hydrogen bonds between nucleotides

• The order of nitrogenous bases.

Which statement best describes the function of DNA in all cells?

• DNA serves to block all mutations in a cell.

• DNA carries its information to the cytoplasm for exocytosis

• DNA directs the synthesis of proteins for the cell

• DNA acts as a chemical messenger for the cell.

In an unmutated segment of DNA, the thymine molecules will pair with an equal number of which type of molecule?

• Adenine

• uracil

• guanine

• cytosine

One long continuous strand of DNA would be found in which of the following?

• a chromosome

• a gene

• a protein

• an amino acid

The nucleotide sequence of "unzipped" portions of DNA is CTACGA. What would be the complementary nucleotide sequence?

• CGCTAT

• GATGCT

• AAGTCC

• GAUGCU

The nucleotide sequence of "unzipped" portions of DNA is TTCAGG. What would be the complementary nucleotide sequence?

• CGCTAT

• AAGUCC

• AAGTCC

• CCTATA

Which bases would compliment ACTTGC?

• UGAACG

• ACTTGC

• TGAACG

• GTCCAT