Here are the correct answers for the questions you provided:
Question 1: Which cells carry nutrients from food to the rest of the cells in the body?
Response: blood cells
Question 2: How are blood cells and stomach cells similar?
Response: Both help maintain homeostasis.
Question 3: Which option shows the correct order of organization within multicellular organisms (from least complex to most complex)?
Response: cell → tissue → organ → organ system → organism
Question 4: Which statement is true?
Response: Bones provide shape to the body.
Question 5: What is systemic circulation?
Response: the path of blood as it moves from the heart throughout the body and back to the heart
Question 6: Which organ in the excretory system helps filter waste?
Response: kidney
Question 7: In which two organs is food broken down?
Response: mouth and stomach
Question 8: Which component of nerve cells contains the nucleus?
Response: cell body
Question 9: 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?
Response: Her pupils shrink because the muscles contract.
Question 10: The human body has four types of tissues. What part of the eye uses muscle tissue for opening and closing movements?
Response: Iris
Question 11: How do polar bears maintain homeostasis in freezing cold weather?
Response: Their thick fur retains heat.
Question 12: Which example shows an organism that cannot reach homeostasis through internal changes?
Response: A lizard is cold, and it moves to a sunny rock to warm up.
Question 13: How is homeostasis achieved?
Response: Cells maintain internal stability.
Question 14: How are muscle cells and bone cells similar?
Response: Both make it possible for you to respond to your environment by moving.
Question 15: What is the function of an organ system?
Response: to work together to do a specific job
Question 16: Which is most complex?
Response: organ system
Question 17: Which organ of the respiratory system is located inside the lungs?
Response: bronchioles
Question 18: Which organ in the excretory system filters blood?
Response: kidney
Question 19: What is the term for changes in the internal or external environment that cause a response?
Response: stimuli
Question 20: How do signals from sensory neurons reach motor neurons?
Response: Through interneurons in the brain and spinal cord that connect sensory neurons and motor neurons.
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