Chapter 10 Practice-Test tomorrow

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil

Which statement BEST describes the primary function of DNA replication?

• To ensure daughter cells have a complete copy of DNA.
• To prevent mutations from occurring in cells.
• To allow prokaryotic cells to undergo meiosis.
• To provide genetic variation within specific organisms.

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

What is the correct complementary strand for the following DNA?ATCGAG

• TACGAG
• ATCGAG
• TAGCTG
• TAGCTC

The two strands of DNA run in opposite directions. They are said to be:

• Antiparallel
• Complementary
• Anti-directional
• Weird

This team discovered that genes are made of DNA, not protein.

• Beadle & Tatum
• Hershey & Chase
• Watson & Crick
• Venter & Collins

This scientist's X-ray photographs of DNA helped identify its helical structure.

• Rosalind Franklin
• Gregor Mendel
• Francis Crick
• Thomas Hunt Morgan

Who was responsible for the model shown?

• Oswald Avery, et. al.
• Watson and Crick
• Erwin Chargaff
• Linus Pauling

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