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Science Nine Chapter Four
Test Description: Science 9 Chapter 4
Instructions: Answer all questions to get your test result.
1) Proteins are made by
A
nucleolus
B
chromosomes
C
DNA
D
ribosomes
2) What instructions do genes carry?
A
to pass information from one generation to the next
B
to make proteins
C
to store genetic material
D
to determine whether a person will be born male or female
3) How many chromosomes to humans have?
A
92 arranged in 46 pairs
B
46 arranged in 23 pairs
C
chromosomes are too small to be counted
D
between 90 000 and 100 000
4) The coate colour of the Spirit Bear is due to
A
global warming
B
environmental stresses
C
a mutated gene
D
change of the seasons
5) Most mutations
A
are helpful to the organism
B
can be fixed by an organism
C
have no effect on the organism
D
are harmful to the organism
6) Which type of mutation is beneficial to an organism and, therefore aids in the organism's ability to survive?
A
negative
B
deletion
C
neutral
D
positive
7) Errors in the DNA that appear to neither harm nor help an organism are called
A
neutral
B
substitutions
C
negative
D
positive
8) Which of the following is not a mutagen?
A
pesticides
B
radiation
C
carbon dioxide
D
cigarette smoke
9) Which organelle produces ribosomes?
A
mitochondrion
B
vesicles
C
endoplasmic reticulum
D
nucleolus
10) DNA stands for
A
Deoxyribonucleic acid
B
Deoxyrubinuclidic acid
C
Deoxynucleic acid
D
Dioxyribonucleic acid
*select an answer for all questions
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