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Biology Semester Review 4
Test Description: AGS Biology
Instructions: Answer all questions to get your test result.
1) _____ are the main organs in keeping water balance in mammals and birds.
A
Gills
B
Hormones
C
Lungs
D
Kidneys
2) Platelets are helpful in _____.
A
digesting food
B
fighting disease
C
removing carbon dioxide
D
clotting the blood
3) Which of the following body parts is about the size of a human fist?
A
the heart
B
the cochlea
C
the cornea
D
the small intestine
4) Which blood vessels carry blood to the heart?
A
capillaries
B
plasma
C
veins
D
arteries
5) What is the principal function of digestive enzymes?
A
breaking down food
B
fighting disease
C
absorbing nutrients
D
regulating gland secretions
6) Almost half our blood consists of _____.
A
white blood cells
B
capillaries
C
antibodies
D
red blood cells
7) Living things come only from other _____.
A
sperm
B
living things
C
eggs
D
chromosomes
8) DNA is a chemical found in the _____ of organisms.
A
traits
B
population
C
cells
D
characteristics
9) After mitosis has occurred, _____ new cells have been formed.
A
three
B
no
C
two
D
four
10) Eggs and sperm are called _____.
A
gametes
B
zygotes
C
chromosomes
D
ovaries
*select an answer for all questions
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