Biology A exam review

Which of the following DNA sequences is complementary to base sequence of ACCGTAT

• CAATGCG

• TGGCATA

• UCCGTAT

• CTTACGC

What scientists figured out the three-dimensional structure of DNA by using a model of metal and wood?

• Chargraff and Griffith

• Watson and Crick

• Paulilng and Frankliln

• Hersey and Chase

One nucleotide consists of a deoxyribose sugar, a phosphate group, and a nitrogen base.

• True

• False

The main difference between the four nucleotides that make up DNA is that they have different:

• sugars

• bases

• bonds

• uracil

DNA is the genetic material for all organisms.

• True

• False

Many replication forks form along the strand of DNA to slow down the replication process.

• True

• False

When new DNA molecules are formed, almost all errors are detected and fixed by:

• one DNA strand

• the correct nucleotide

• DNA polymerase

• the sugar-phosphate backbone

If the wrong base is being paired to an existing base, DNA polymerase will correct the error.

• True

• False

DNA replication occurs so the new cells being created from cell division have different DNA than their parent cell.

• True

• False

The process that makes and exact copy of a cell's DNA is called:

• conservation

• synthesis

• preservation

• replication