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