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Homeostasis
Test Description: FCAT Practice
Instructions: Answer all questions to get your test result.
1) Homeostasis is necessary for a cell to survive. What is the definition of homeostasis?
A
the process by which energy from the sun is used to make food
B
the division of cells to form new cells
C
the maintenance of a stable internal environment
D
the elimination of wastes
2) What is the result of homeostasis at the cellular level?
A
the cell dies
B
the environment within the cell is stable
C
the cell no longer obtains energy
D
the cell divides
3) The survival of a cell depends on the cell maintaining homeostasis. What is most likely to happen to a cell if homeostasis is not maintained?
A
The cell will immediately divide.
B
Cell processes will continue unchanged.
C
Many chemical reactions in the cell will slow down or even stop.
D
The cell will eliminate wastes more efficiently.
4) Cells must be able to perform certain functions in order to survive. Which of the following must all cells do to survive?
A
use oxygen
B
obtain energy
C
continue growing
D
absorb wastes
5) What is a way an organism helps maintain homeostasis?
A
Sending signals to other cells in the body
B
eliminating waste
C
growing
D
organic disolution
6) Cells can die or become damaged. What cell process replaces dead or damaged cells?
A
Cells multiply by cellular respiration.
B
Cells take in new cells through endocytosis
C
Cells grow larger to make up for the lost cells
D
Cells divide to make new cells.
7) Some cells in multicellular organisms are constantly dividing. What is one reason why cells divide?
A
so that an organism can exchange materials with its environment
B
so that an organism can obtain the energy that it needs
C
so that an organism can eliminate wastes
D
so that an organism can grow by adding new cells
8) In one type of cell division, a single cell forms two new cells. This process is called mitosis. What is a reason that human skin cells frequently undergo mitosis?
A
to replace dead or damaged skin cells
B
to replace dead or damaged muscle cells
C
to prevent bruises on the body
D
to get energy for the body
9) Cells exchange materials with the environment around them. What is the main reason for this?
A
to keep the cell membrane functioning
B
to get rid of wastes and take in nutrients
C
to release energy into the environment
D
to replace damaged and dying cells
10) Organisms can respond to changes in their environment in order to maintain homeostasis. What does a tree do to maintain homeostasis during the winter months?
A
loses its leaves
B
basks in the sun
C
hibernates
D
shivers to generate heat
*select an answer for all questions
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