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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 make proteins
B
to pass information from one generation to the next
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
between 90 000 and 100 000
C
46 arranged in 23 pairs
D
chromosomes are too small to be counted
4) The coate colour of the Spirit Bear is due to
A
change of the seasons
B
global warming
C
environmental stresses
D
a mutated gene
5) Most mutations
A
are harmful to the organism
B
have no effect on the organism
C
can be fixed by an organism
D
are helpful to the organism
6) Which type of mutation is beneficial to an organism and, therefore aids in the organism's ability to survive?
A
deletion
B
neutral
C
positive
D
negative
7) Errors in the DNA that appear to neither harm nor help an organism are called
A
negative
B
positive
C
neutral
D
substitutions
8) Which of the following is not a mutagen?
A
carbon dioxide
B
radiation
C
pesticides
D
cigarette smoke
9) Which organelle produces ribosomes?
A
nucleolus
B
vesicles
C
endoplasmic reticulum
D
mitochondrion
10) DNA stands for
A
Deoxyrubinuclidic acid
B
Deoxyribonucleic acid
C
Deoxynucleic acid
D
Dioxyribonucleic acid
*select an answer for all questions
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