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DNA Structure And Function (6A)
Test Description: The student biologist will be able to (6A) identify components of DNA and describe how information for specifying the traits of an organism is carried in the DNA.
Instructions: Answer all questions to get your test result.
1) Which of the following is a complementary base pair?
A
Thymine and Cytosine
B
Guanine and Thymine
C
Adenine and Cytosine
D
Cytosine and Guanine
2) DNA stands for...
A
deribonucleic acid
B
deribose acid
C
deoxyribonucleic acid
D
deoxyribose acid
3) DNA is made up of repeating monomers called...
A
nucleotides
B
fatty acids
C
amino acids
D
monosaccharides
4) The double helix is held together by _____________ that exist between the complementary bases.
A
ionic bonds
B
strong bonds
C
covalent bonds
D
hydrogen bonds
5) Which of the following correctly describes the structure of DNA?
A
strands of phosphate-sugar backbone, with complementary nitrogenous bases bound into a double helix
B
strands of phosphate-nitrogen backbone, with complementary nitrogenous base pairs bound into a double helix
C
strands of phosphate-sugar backbone, with complementary nitrogenous base pairs bound into a single helix
D
strands of sugar-nitrogen backbone, with complementary deoxyribose base pairs bound into a double helix
6) Which of the following is NOT a part of a nucleotide of DNA?
A
phosphate group
B
nitrogenous base
C
phospholipid
D
5-carbon sugar
7) What is the function of DNA within a cell?
A
DNA prevents the genetic codes from mutating.
B
DNA is a blueprint that contains the directions necessary to construct parts of the cell.
C
DNA ensures that only the best characteristics are passed on to the next generation.
D
DNA serves as a record for cell activities.
8) DNA affects the organism's traits by....
A
establishing the rules by which all of the elements in the body will form compounds
B
determine which traits will be most beneficial to the organism
C
directing the assembly of amino acids to form proteins
D
identifying which genetic material should be expressed and which material discarded
9) The genetic code of DNA is based on...
A
the 5-carbon sugar and phosphate group
B
the order of the nitrogenous bases
C
how condensed the DNA is
D
the number of nitrogenous bases
10) The differences in base order make the DNA of one organism different from the DNA of another organism.
A
False
B
True
*select an answer for all questions
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