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All About DNA Flashcards | StudBud
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All About DNA
All About DNA
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StudBud Administration
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Learn about DNA structure and function in the human body
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
What nitrogenous base pairs with adenine in DNA?
guanine
uracil
cytosine
thymine
2
What does "DNA" stand for?
deoxynitrogenic acid
ribonucleic acid
deoxyribonucleic acid
desalinatednucleic acid
3
Why do you have 2 copies of each chromosome?
It's a leftover redundancy due to evolution
Each chromosome contains half of each gene
Each copy contains different genes
You get 1 from each biological parent
4
What are the components of a DNA nucleotide?
sulfur group, deoxyribose sugar, nitrogenous base
phosphate group, deoxyribose sugar, nitrogenous base
phosphate group, ribose sugar, deoxyribose sugar
phosphate group, ribose sugar, nitrogenous base
5
How many hydrogen bonds form between guanine and cytosine?
3
1
4
2
6
Which DNA bases are pyrimidines?
thymine and cytosine
adenine and thymine
adenine and cytosine
guanine and cytosine
7
Which nitrogenous bases in DNA are purines?
Cytosine and guanine
Adenine and thymine
Guanine and thymine
Adenine and guanine
8
What shape is DNA?
quadruple helix
double helix
single helix
triple helix
9
Fill in the blanks: The sugar-phosphate backbone is _______ charged and ________.
Positively; hydrophobic
Negatively; hydrophilic
Negatively; hydrophobic
Positively; hydrophilic
10
DNA is wrapped tightly around proteins called histones. What charge are the histones?
Positive
Negative
11
What nitrogenous base pairs with cytosine in DNA?
uracil
thymine
guanine
adenine
12
What are the four nitrogenous bases in DNA?
A, C, U, G
A, S, C, T
A, C, T, G
R, W, C, T
13
How many hydrogen bonds form between adenine and thymine in DNA?
2
1
4
3
14
Where is DNA located in the cell?
cytoplasm
endoplasmic reticulum
ribosome
nucleus
15
What charge does DNA have?
positive
negative
