Living things are both similar to and different from each other and from nonliving things.
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Q 1/15
Score 0
Which human activity most directly causes a significant increase in the amount of carbon dioxide in the atmosphere?
60
growing corn for food
driving cars long distances
not using products containing plastics
planting large numbers of trees
Q 2/15
Score 0
Which statement most accurately predicts the result of interfering with populations in the web?
60
Removing all the mountain lions from the food web will benefi t the ecosystem.
Removing the cricket and rabbit populations would cause the number of trees to decrease.
Removing the cricket population will have little effect on the balance of the food web.
Removing deer from the food web will affect the rabbit and grass populations.
15 questions
Q.
Which human activity most directly causes a significant increase in the amount of carbon dioxide in the atmosphere?
1
60 sec
4.1
Q.
Which statement most accurately predicts the result of interfering with populations in the web?
2
60 sec
4.1
Q.
Which system in a multicellular organism functions most like the cytoplasm in a singlecelled organism?
3
60 sec
4.1
Q.
The ATP molecule above is commonly used to
4
60 sec
4.1
Q.
Single-celled organisms are able to maintain homeostasis, even though they lack higher levels of organization such as organs and organ systems, because
5
60 sec
4.1
Q.
In single-celled organisms, materials are stored primarily in
6
60 sec
4.1
Q.
The presence of these fish in American waters is of concern because it might offer too much competition to native
7
60 sec
4.1
Q.
In a food web, which type of organism receives energy from the other three types?
8
60 sec
4.1
Q.
An amoeba is a single-celled, heterotrophic organism. In order to meet its energy needs, it relies directly on the interaction of which cell structures?
9
60 sec
4.1
Q.
Which cell structure plays a direct role in the release of this chemical from the cell?
10
60 sec
4.1
Q.
The removal of the predator populations from an ecosystem would most likely result in
11
60 sec
4.1
Q.
A corn field includes corn plants, mice, hawks, and various insects, fungi, and bacteria. Which nutritional role is correctly paired with organisms that carry out that role?
12
60 sec
4.1
Q.
13
60 sec
4.1
Q.
The brown tree snake was accidentally introduced to the island of Guam during World War II. Since then,this snake has caused the extinction of twelve native bird species by eating their eggs and young.
One negative result of this snake's introduction was most likely
14
60 sec
4.1
Q.
A direct result of the rapid decline of the passenger pigeon population was most likely
