Here are the correct answers for the questions provided:
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Which cells carry nutrients from food to the rest of the cells in the body?
- Answer: blood cells
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How are blood cells and stomach cells similar?
- Answer: Both help maintain homeostasis.
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Which option shows the correct order of organization within multicellular organisms (from least complex to most complex)?
- Answer: cell → tissue → organ → organ system → organism
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Which statement is true?
- Answer: Bones provide shape to the body.
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What is systemic circulation?
- Answer: the path of blood as it moves from the heart throughout the body and back to the heart
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Which organ in the excretory system helps get filter waste?
- Answer: kidney
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In which two organs is food broken down?
- Answer: mouth and stomach
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Which component of nerve cells contains the nucleus?
- Answer: cell body
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A girl has her eyes shut and is standing inside a brightly lit room. What happens to her pupils when she opens her eyes? Why?
- Answer: Her pupils shrink because the muscles contract.
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The human body has four types of tissues. What part of the eye uses muscle tissue for opening and closing movements?
- Answer: Iris
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How do polar bears maintain homeostasis in freezing cold weather?
- Answer: Their thick fur retains heat.
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Which example shows an organism that cannot reach homeostasis through internal changes?
- Answer: A lizard is cold, and it moves to a sunny rock to warm up.
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How is homeostasis achieved?
- Answer: Cells maintain internal stability.
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How are muscle cells and bone cells similar?
- Answer: Both make it possible for you to respond to your environment by moving.
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What is the function of an organ system?
- Answer: to work together to do a specific job
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Which is most complex?
- Answer: organ system
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Which organ of the respiratory system is located inside the lungs?
- Answer: bronchioles
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Which organ in the excretory system filters blood?
- Answer: kidney
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What is the term for changes in the internal or external environment that cause a response?
- Answer: stimuli
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How do signals from sensory neurons reach motor neurons?
- Answer: Through interneurons in the brain and spinal cord that connect sensory neurons and motor neurons.