Let’s go through each question one by one, using only the information from the passage.
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Question 1: What is the function of the white blood cells?
From the passage:
> “White blood cells are part of our immune system, which means they fight germs that make us sick.”
So, white blood cells help protect us from getting sick by fighting germs.
✔ Final Answer for Q1: White blood cells fight germs to keep us from getting sick.
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Question 2: How are arteries and veins alike?
From the passage:
> “Arteries and veins are the body’s largest blood vessels. Arteries carry blood away from the heart, and veins bring blood back to the heart.”
They’re both large blood vessels — that’s how they’re alike. One carries blood away, one brings it back, but they’re both big tubes moving blood.
✔ Final Answer for Q2: Arteries and veins are alike because they are both the body’s largest blood vessels.
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Question 3: Based on other information in the passage, what gases are being exchanged in the alveoli?
From the passage:
> “When you breathe in, oxygen goes into your lungs... When you breathe out, carbon dioxide leaves your body.”
Also:
> “The tiny air sacs called alveoli... allow oxygen to enter the bloodstream and carbon dioxide to leave.”
So, in the alveoli, oxygen comes in and carbon dioxide goes out.
✔ Final Answer for Q3: Oxygen and carbon dioxide are exchanged in the alveoli.
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Question 4: What is the main idea of this passage?
The whole passage talks about how blood moves around the body — the heart pumps it, arteries and veins carry it, capillaries let stuff move in and out, and different parts of blood do different jobs (like carrying oxygen or fighting germs).
It’s all about how the circulatory system works.
✔ Final Answer for Q4: The main idea is how the circulatory system moves blood through the body to deliver oxygen and nutrients and remove waste.
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Question 5: What does hemoglobin do?
From the passage:
> “Hemoglobin allows blood to hold on to more oxygen than it normally could.”
And also:
> “Red blood cells contain an iron-rich substance called hemoglobin. Hemoglobin allows blood to hold on to more oxygen…”
So hemoglobin helps red blood cells carry more oxygen.
✔ Final Answer for Q5: Hemoglobin helps red blood cells carry more oxygen.
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Final Answer:
1) White blood cells fight germs to keep us from getting sick.
2) Arteries and veins are alike because they are both the body’s largest blood vessels.
3) Oxygen and carbon dioxide are exchanged in the alveoli.
4) The main idea is how the circulatory system moves blood through the body to deliver oxygen and nutrients and remove waste.
5) Hemoglobin helps red blood cells carry more oxygen.
Parent Tip: Review the logic above to help your child master the concept of 6th grade worksheet reading.
