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DNA 2014 #1
Test Description: DNA basics
Instructions: Answer all questions to get your test result.
1) Base pairing rule states that the DNA of any species contains equal amount of cytosine and
A
guanine
B
iodine
C
adenine
D
thymine
2) The two sides of the DNA double-helix are held together by
A
covalent bonds
B
sugars
C
ionic bonds
D
hydrogen bonds
3) What two scientists discovered the basic structure of DNA?
A
Walsh and Neil
B
Watson and Crick
C
Crocket and Tubbs
D
Nelson and Smith
4) Where in a cell are proteins made?
A
nucleus
B
ribose
C
ribosomes
D
Golgi Apparatus
5) How many strands of nucleotides does mRNA have?
A
1
B
2
C
3
D
4
6) What two organelles is DNA also found inside a cell?
A
mitochondria and cytoplasm
B
mitochondria and centrioles
C
mitochondria and chloroplasts
D
chloroplasts and muscle
7) What is the basic difference between purines and pyrimidines?
A
purines are found only in male organisms
B
purines are single-ringed; pyrimidines are double-ringed
C
purines are only found in DNA; pyrimidines are found in DNA and mRNA
D
purines are double-ringed; pyrimidines are single-ringed
8) How many genes do humans have?
A
23
B
120,000
C
46
D
30,000
9) Why is Iceland the perfect place to look for genes causing disease?
A
people there are all older than 25 years old
B
the climate makes it easier to study genes
C
it is a secluded island
D
all of the people that live there are probably related somehow
10) What does DNA stand for?
A
deoxyribonucleic acid
B
deoxyribonucleus acid
C
deoxygenribonucleic acid
D
deoxyribosenucleic acid
*select an answer for all questions
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