Componentsof Bloodand Blood Groups Worksheet Easel Activity-2 ... - Free Printable
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Step-by-step solution for: Componentsof Bloodand Blood Groups Worksheet Easel Activity-2 ...
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Step-by-step solution for: Componentsof Bloodand Blood Groups Worksheet Easel Activity-2 ...
Here is the complete solution to your worksheet, with explanations for each answer:
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Q.1. Write T or True if the statement is true; write F or False if the statement is false.
1. T (True) — Blood is indeed a red body fluid that circulates in the body, delivering oxygen and nutrients to tissues and removing waste.
2. T (True) — The average adult human has approximately 4.7 to 5.5 liters of blood. This varies slightly by gender, weight, and height, but this range is medically accepted.
3. F (False) — Red blood cells (RBCs) do *not* fight germs. That is the function of white blood cells (leukocytes). RBCs carry oxygen via hemoglobin.
4. T (True) — Mature red blood cells in mammals (including humans) lack a nucleus. This allows more space for hemoglobin and increases oxygen-carrying capacity.
5. F (False) — Platelets are *not* considered true cells. They are small, anucleate fragments of megakaryocytes (large bone marrow cells). They do not have a nucleus or most organelles and cannot replicate.
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Q.2. Label the major components of the blood on the diagram below.
After centrifugation, blood separates into three distinct layers:
- Top layer (light yellow): Plasma — This is the liquid component of blood, making up about 55% of total blood volume. It carries proteins, hormones, nutrients, and waste.
- Middle thin layer (buffy coat): Platelets and white blood cells — This is a thin, whitish layer between plasma and red blood cells. It contains leukocytes (WBCs) and thrombocytes (platelets).
- Bottom layer (dark red): Red blood cells — These are the most abundant cells in blood and settle at the bottom due to their density.
✔ So, from top to bottom, label the boxes as:
1. Plasma
2. Platelets and white blood cells
3. Red blood cells
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Q.3. Fill in the blanks with suitable words.
a) Blood cells are produced in bone marrow.
→ Specifically, red bone marrow in flat bones (like pelvis, sternum) and ends of long bones produces all types of blood cells through hematopoiesis.
b) The liquid part of human blood is known as plasma.
→ Plasma is mostly water (about 90%) and contains proteins, electrolytes, hormones, and other dissolved substances.
c) Hemoglobin is the iron-containing protein found in red blood cells.
→ Hemoglobin binds oxygen in the lungs and releases it in tissues. Its iron content gives blood its red color.
d) The shape of a mature red blood cell is biconcave.
→ This unique shape increases surface area for gas exchange and allows flexibility to squeeze through capillaries.
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Q.4. Which of the following are functions of the blood?
✔ Correct answer: d) All of the above
Blood performs many vital functions:
- Transport of nutrients (from digestion), oxygen, hormones, and waste.
- Regulate body temperature — by redistributing heat via vasodilation/vasoconstriction.
- Defense of the body — via white blood cells, antibodies, and clotting factors.
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Q.5. What makes up the most of the human blood?
✔ Correct answer: b) Plasma
Plasma constitutes about 55% of total blood volume. Red blood cells make up about 45%, and platelets and white blood cells together make up less than 1%.
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Q.1:
1. T
2. T
3. F
4. T
5. F
Q.2:
Top box → Plasma
Middle box → Platelets and white blood cells
Bottom box → Red blood cells
Q.3:
a) Bone marrow
b) Plasma
c) Hemoglobin
d) Red blood cell
Q.4: d) All of the above
Q.5: b) Plasma
Let me know if you’d like a printable version or diagrams explained further!
---
Q.1. Write T or True if the statement is true; write F or False if the statement is false.
1. T (True) — Blood is indeed a red body fluid that circulates in the body, delivering oxygen and nutrients to tissues and removing waste.
2. T (True) — The average adult human has approximately 4.7 to 5.5 liters of blood. This varies slightly by gender, weight, and height, but this range is medically accepted.
3. F (False) — Red blood cells (RBCs) do *not* fight germs. That is the function of white blood cells (leukocytes). RBCs carry oxygen via hemoglobin.
4. T (True) — Mature red blood cells in mammals (including humans) lack a nucleus. This allows more space for hemoglobin and increases oxygen-carrying capacity.
5. F (False) — Platelets are *not* considered true cells. They are small, anucleate fragments of megakaryocytes (large bone marrow cells). They do not have a nucleus or most organelles and cannot replicate.
---
Q.2. Label the major components of the blood on the diagram below.
After centrifugation, blood separates into three distinct layers:
- Top layer (light yellow): Plasma — This is the liquid component of blood, making up about 55% of total blood volume. It carries proteins, hormones, nutrients, and waste.
- Middle thin layer (buffy coat): Platelets and white blood cells — This is a thin, whitish layer between plasma and red blood cells. It contains leukocytes (WBCs) and thrombocytes (platelets).
- Bottom layer (dark red): Red blood cells — These are the most abundant cells in blood and settle at the bottom due to their density.
✔ So, from top to bottom, label the boxes as:
1. Plasma
2. Platelets and white blood cells
3. Red blood cells
---
Q.3. Fill in the blanks with suitable words.
a) Blood cells are produced in bone marrow.
→ Specifically, red bone marrow in flat bones (like pelvis, sternum) and ends of long bones produces all types of blood cells through hematopoiesis.
b) The liquid part of human blood is known as plasma.
→ Plasma is mostly water (about 90%) and contains proteins, electrolytes, hormones, and other dissolved substances.
c) Hemoglobin is the iron-containing protein found in red blood cells.
→ Hemoglobin binds oxygen in the lungs and releases it in tissues. Its iron content gives blood its red color.
d) The shape of a mature red blood cell is biconcave.
→ This unique shape increases surface area for gas exchange and allows flexibility to squeeze through capillaries.
---
Q.4. Which of the following are functions of the blood?
✔ Correct answer: d) All of the above
Blood performs many vital functions:
- Transport of nutrients (from digestion), oxygen, hormones, and waste.
- Regulate body temperature — by redistributing heat via vasodilation/vasoconstriction.
- Defense of the body — via white blood cells, antibodies, and clotting factors.
---
Q.5. What makes up the most of the human blood?
✔ Correct answer: b) Plasma
Plasma constitutes about 55% of total blood volume. Red blood cells make up about 45%, and platelets and white blood cells together make up less than 1%.
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✔ Final Answers Summary:
Q.1:
1. T
2. T
3. F
4. T
5. F
Q.2:
Top box → Plasma
Middle box → Platelets and white blood cells
Bottom box → Red blood cells
Q.3:
a) Bone marrow
b) Plasma
c) Hemoglobin
d) Red blood cell
Q.4: d) All of the above
Q.5: b) Plasma
Let me know if you’d like a printable version or diagrams explained further!
Parent Tip: Review the logic above to help your child master the concept of components of blood worksheet.
