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Chapter 2 LS, Section 1-A
Test Description: It's Alive!! Or, Is It?
Instructions: Answer all questions to get your test result.
1) A change in an organism's environment that affects the organism's activities is a ___.
A
producer
B
metabolism
C
response
D
stimulus
2) When a duck dives under water, its inner eyelids automatically raise to cover the duck's eyes. In this case, water acts as ___.
A
stimulus
B
a reaction
C
homeostasis
D
an enzyme
3) Maintaining a body temperature of 37 degrees C and a stable amount of sugar in your blood are both examples of ___.
A
respiration
B
homeostasis
C
metabolism
D
photosynthesis
4) Which of the following is a stimulus?
A
darkness
B
gravity
C
all of the answers
D
sound
5) The pupils of your eyes respond to which of the following stimuli?
A
scent
B
sound
C
light
D
touch
6) DNA is an acronym for ___.
A
dinoribunucleic acid
B
deoynitrogenous acid
C
decomponutrient acid
D
deoxyribonucleic acid
7) Both fleas and frogs leap in response to a stimulus. If a flea can leap 20 cm, and frog can jump 5 m, what percentage of the frog's jump is the flea's jump.
A
25 percent
B
0.25 percent
C
40 percent
D
4 percent
8) The human body maintains a temperature of about ___.
A
37 degrees C/ 98.6F
B
none of the answers
C
98.6 degrees C
D
0 degrees
9) When a Venus flytrap catches an insect, it is reacting to the stimulus of ___.
A
sound
B
scent
C
touch
D
light
10) Fish that live in the ice cold waters off Antarctica make a natural antifreeze that keeps them from freezing. This is the fish's way of maintaining a stable environment known as _
A
metabolism
B
photosynthesis
C
respiration
D
homeostasis
*select an answer for all questions
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