Here are the correct answers for each question:
-
Which cells carry nutrients from food to the rest of the cells in the body?
Answer: blood cells -
How are blood cells and stomach cells similar?
Answer: Both help maintain homeostasis. -
Which option shows the correct order of organization within multicellular organisms (from least complex to most complex)?
Answer: cell → tissue → organ → organ system → organism -
Which statement is true?
Answer: Bones provide shape to the body. -
What is systemic circulation?
Answer: the path of blood as it moves from the heart throughout the body and back to the heart -
Which organ in the excretory system has a function similar to that of the esophagus in the digestive system?
Answer: ureter -
In which two organs is food broken down?
Answer: mouth and stomach -
When you get home, you smell cookies baking. You respond by walking toward the kitchen. Many signals move through your nervous system in this process. Which component is involved first?
Answer: dendrites in your sensory neurons -
Which component of nerve cells contains the nucleus?
Answer: cell body -
Which of the following observations could you make based on stimuli to your thermoreceptors?
Answer: The ice cream is cold. -
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. -
The human body has four types of tissues. What part of the eye uses muscle tissue for opening and closing movements?
Answer: Iris -
How do polar bears maintain homeostasis in freezing cold weather?
Answer: Their thick fur retains heat. -
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. -
When comparing a plant cell to an animal cell, only the plant cell will contain-
Answer: chloroplasts
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