L4 - Blood Observations Check-In

What is the purpose of a microscope?

• To help you take length measurements of small objects

• To help create a model of what tiny things are like

• To make you feel like a real scientist

• To help you to see objects you can't with just your eyes

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What were some of the reasons we decided to use the microscopes to investigate blood?

• Blood separates when left out, but we can't see what it separates into with our eyes

• When we look at blood with just our eyes, it seems like a pink blur

• The microscope is able to show us the true colors of blood

• The microscope will let us see the tiny structures inside of the blood

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Match the following images of the blood to the level of magnification.

• 0 X

  Just your eyes

• 
• 100 X

  ( Medium / Yellow )

• 
• 40 X

  ( Low / Red )

• 
• 400 X

  ( High / Blue )

• 

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Which level of magnification was the most helpful to us when trying to learn about what makes up the blood?

• 40 X

  ( Low / Red)

• 100 X

  ( Medium / Yellow )

• 400 X

  ( High / Blue )

• 0 X

  ( Just our Eyes )

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What structures could be seen that were not visible without the use of a microscope?

Check ALL that apply.

• The round pink dots

• The round purple dots

• The red color

• The fluid

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When you look at the blood smear what patterns to you notice about the type of structures?

• There are more small pink dots than large purple dots

• There are more large purple dots than small pink dots

• There are the same number of pink and purple dots

• There is more white empty space than purple or pink dots.

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When you look at the blood smear what best describes the structure of the pink dots?

• They are very round, small, and have a lighter color in the center

• They are oval shaped, small, and have holes through the center

• They are round, very large and are lighter colored in the center

• They are round, large, and have a dark outer edge

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When you look at the blood smear what best describes the structure of the purple dots?

• They are larger than the pink dots, and have a dark center

• They are smaller than the pink dots, and have a dark center

• They are perfectly round, and are lighter colored in the center

• They have a more unusual blob shape, and are lighter colored in the center

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Look at the provided image.

When comparing human blood to frog blood what do you notice?

Check ALL that apply.

• Human blood does not have a dark dot in the center but the frog blood does

• Human blood is round in shape, the frog blood is more oval

• Human blood is larger and has more pink dots than frog blood

• Human blood has no empty space between the dots but frog blood does

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Compare the different types of blood in the image. Then sort them into groups based on how similar it is to human blood.

Groups:

(a) Similar to Human Blood

,

(b) Different from Human Blood

• Rabbit Blood

• Frog Blood

• Rat Blood

• Fish Blood

• Bird Blood

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