Which purpose does a light bulb serve in a circuit?
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1 point
a Cell
b Switch
c Load
c Load
Of these things in an environment, which one is a living thing?
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1 point
a air
b river flowing down a mountain
c mushrooms sprouting
d clay on the side of the riverbank
c mushrooms sprouting
One reason animal cells don't need a central vacuole is because they often have smaller vacuoles for storage. What is another reason animal cells don't need central vacuoles?
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1 point
a Animals do not produce their own food.
b Animal cells have cell walls.
c Animal bodies have skeletons or other means of providing structure.
c Animal bodies have skeletons or other means of providing structure.
Which statement is correct about organelles that provide energy?
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1 point
a They are found only in animal cells.
b They are responsible for cellular respiration.
c They are found only in plant cells.
b They are responsible for cellular respiration.
Unicellular cells must carry out ___ of life.
*
1 point
a) all functions
b) a single function
c) specific functions
d) a few functions
a) all functions.
What is the function of a nerve cell in a multicellular organism?
*
1 point
a produce and manage movement
b store and distribute oxygen
c carry and transmit signals