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DNA TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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DNA TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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DNA TEST QUESTIONS AND ANSWERSWITH SOLUTIONS 2024
What does DNA stand for? - ANSWER Deoxyribonucleic acid
What is DNA's primary function? - ANSWER Contains genetic information
What is the function of proteins? - ANSWER They are the basic building blocks of living things and are
responsible for the growth and repair of body cells and tissues
What are the repeating subunits called that make up DNA? - ANSWER Nucleotides
Name the 3 parts of a DNA nucleotides - ANSWER 5-carbon deoxyribose, a nitrogenous base, and a
phosphate group
Name the 4 nitrogen bases on DNA - ANSWER Adenine, Guanine, Thymine, Cytosine
What is the model of DNA known as? Why? - ANSWER A double helix because it is composed of two
nucleotides chains wrapped around each other
What makes up the sides of a DNA molecule? - ANSWER Deoxyribose sugars and phosphates
What makes up the "rungs" of a DNA molecules? - ANSWER Nucleotide bases
What type of bonds holds the DNA base together? Are they strong or weak bonds? - ANSWER Hydrogen
bonds; weak bonds
Name the complementary base pairs on DNA - ANSWER A to T and C to G
How many hydrogen bonds link cytosine and guanine? Adenine and Thymine? - ANSWER 2
, What is the first step that must occur in DNA replication? - ANSWER Breaking of the hydrogen bonds
between the two bases
What acts as the template in DNA replication? - ANSWER The side opposing the new strand about to be
made
What is a replication fork? - ANSWER When the DNA strand is in the process of being broken up
What is the function of DNA polymerase? - ANSWER Enzymes that function in the replication and repair
of DNA
To which end of DNA are the new nucleotides added? - ANSWER Nearest the 5 (3->5)
The strands of DNA are considered to be what to each other? - ANSWER Complementary
If the sequence of nucleotides on the original DNA strand was A_G_G_T_C_A, what would be the
nucleotide sequence of the complementary strand of DNA? - ANSWER T_C_C_A_G_T
Does replication of DNA begin at one end and proceed to the other? Explain - ANSWER 3->5
Why does DNA replication take place at many places on the molecule simultaneously? - ANSWER It
would take too long if it didn't
When replication is complete, how do the 2 new DNA molecules compare to each other and the original
DNA molecule? - ANSWER They are complementary
At what stage of the cell cycle is DNA replicated? - ANSWER Interphase
What is a mutation? - ANSWER Error in the pattern of the DNA
Name several things that can cause DNA mutations - ANSWER Mutations can be inherited and acquired
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