DNA Structure Practice Quiz: Question Preview (ID: 28929)


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To which part of the backbone are the nitrogen bases attached to?
a) phosphates b) deoxyribose sugars c) sometimes deoxyribose sugars, sometimes phosphates d) both deoxyribose sugars and phosphates
When DNA is in its condensed form, it is called
a) chromatin b) a histone protein c) a chromosome d) a nucleotide
The name of the nitrogen base that starts with the letter A is __________.
a) alanine b) argenine c) aspartame d) adenine
The name of the nitrogen base that starts with the letter C is
a) calanine b) cytosine c) cytoplasm d) cuanine
Adenine, guanine, thymine, and cytosine are all examples of:
a) nitrogen bases b) sugars c) phosphates d) types of bonds
In a DNA molecule, the number of _____________ will equal the number of thymines because they always base pair together.
a) guanines b) adenines c) cytosines d) uracils
Which nitrogen base is able to base pair with guanine?
a) adenine b) thymine c) uracil d) cytosine
Which vocabulary term is used to describe the sides of the DNA ladder?
a) backbone b) wishbone c) nitrogen bases d) backside
The backbone of the DNA molecule contains which two structures?
a) nitrogen bases and phosphates b) deoxyribose sugars and nitrogen bases c) deoxyribose sugars and phosphates d) guanines and cytosines
Which of these structures within the DNA molecule causes it to have a negative charge?
a) the phosphate b) the deoxyribose sugar c) the nitrogen base d) the hydrogen bonds
Which of the following combinations correctly describes the bonds found within the DNA molecule?
a) weak covalent bonds hold together the nitrogen bases, while strong hydrogen bonds hold together the sugars and phosphates b) weak hydrogen bonds hold together the sugars and phosphates, while strong covalent bonds hold together the nitrogen bases c) strong covalent bonds hold together every component of the DNA molecule d) weak hydrogen bonds hold together the nitrogen bases, while strong covalent bonds hold together the sugars and phosphates
When looking at the DNA molecule as a whole, it has/is _________________.
a) a positive charge b) a negative charge c) neutral (no charge) d) sometimes positively and sometimes negatively charged.
The DNA molecule is made of many different parts. Which structure is considered the individual building block?
a) a phosphate group b) 2 nitrogen bases joined together c) a nucleotide d) a deoxyribose sugar
One section within the DNA molecule that codes for a specific trait is called a:
a) gene b) genome c) nucleotide d) nitrogen base pair
Which of these elements is NOT found in the DNA molecule?
a) carbon b) oxygen c) nitrogen d) sulfur
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