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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
chromosomes
B
nucleolus
C
ribosomes
D
DNA
2) What instructions do genes carry?
A
to store genetic material
B
to make proteins
C
to pass information from one generation to the next
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
chromosomes are too small to be counted
C
between 90 000 and 100 000
D
46 arranged in 23 pairs
4) The coate colour of the Spirit Bear is due to
A
global warming
B
change of the seasons
C
environmental stresses
D
a mutated gene
5) Most mutations
A
are helpful to the organism
B
are harmful to the organism
C
can be fixed by an organism
D
have no effect on 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
positive
B
neutral
C
substitutions
D
negative
8) Which of the following is not a mutagen?
A
radiation
B
carbon dioxide
C
cigarette smoke
D
pesticides
9) Which organelle produces ribosomes?
A
vesicles
B
endoplasmic reticulum
C
nucleolus
D
mitochondrion
10) DNA stands for
A
Dioxyribonucleic acid
B
Deoxyrubinuclidic acid
C
Deoxynucleic acid
D
Deoxyribonucleic acid
*select an answer for all questions
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