Of these things in an environment, which one is a living thing?
air
river flowing down a mountain
mushrooms sprouting
clay on the side of the riverbank
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
Animals do not produce their own food.
Animal cells have cell walls.
Animal bodies have skeletons or other means of providing structure.
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
They are found only in animal cells.
They are responsible for cellular respiration.
They are found only in plant cells.
They are responsible for cellular respiration.
Unicellular cells must carry out ___ of life.
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1 point
all functions
a single function
specific functions
a few functions
all functions.
Which system is most complex?
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1 point
cells
organs
organ systems
organ systems.
Which statement is true?
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1 point
Bones help the heart pump blood.
Bones are composed of a single layer.
Bones provide shape to the body.
Bones are organ systems.
Bones provide shape to the body.
Which example shows an organism that cannot reach homeostasis through internal changes?
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1 point
A lizard is cold, and it moves to a sunny rock to warm up.
A dog shivers when it is too cold.
A person gets a fever in response to a flu infection.
A dog shivers when it is too cold.
In which two organs is food broken down?
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1 point
Mouth and stomach
Small intestine and large intestine
Esophagus and small intestine
Esophagus and stomach
Mouth and stomach.
What should be the correct order (largest to smallest) of hierarchy for Classification of Organisms?
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1 point
class → order → family → genus → species
order → class → family → genus → species
species → genus → order → family → class
class → order → family → genus → species.
Use the table model to correctly identify the animal in the story. You are walking home from school and an animal jumps out on the sidewalk. You can see it has a backbone, fur and is nibbling on some grass. As you get closer, you see that the animal is a....
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1 point
bird
cat
rabbit
dog
rabbit
Why is the classification species not considered a group?
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1 point
Each species is an individual organism.
Each species is a separate type of organism.
Each species shares characteristics with other species.
Each species is an individual organism.
Bacteria and humans are similar in that they?
A.
Are multicellular.
B.
Produce energy.
C.
Are unicellular.
D.
Grow and reproduce.