PT131.S3.Q3

PrepTest 131 - Section 3 - Question 3

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Hemoglobin, a substance in human blood, transports oxygen from the lungs to the rest of the body. ████ ████ ██████ ████████ ██ █████ ███ █ ██████████ ████████ ███████ ████ █████████ ██ ███████ ██ ██████████ ██████ █████████ █████ ███ ███████ ████████ ██ ████ ██████ █████████ ██ ████████ ████████ ██ ██████ ████████ ███████ ███ █████ ██ ███ ██████████ █████████ ████ ████ ███████ ██ █████████ ██ ████ ██████ ██ ███████ ████ ███████

Summary

Hemoglobin transports oxygen from the lungs throughout the body. As it picks up more oxygen molecules, a hemoglobin molecule becomes more effective at picking up additional oxygen molecules until it reaches its capacity of four. Grabbing an oxygen molecule changes the shape of the hemoglobin molecule, making it easier to receive more oxygen.

Strongly Supported Conclusions

A hemoglobin molecule with more oxygen is more effective at picking up oxygen molecules than a hemoglobin molecule with fewer oxygen molecules.

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3.

Which one of the following ██ ████ ████████ █████████ ██ ███ ███████████ ██████

a

A hemoglobin molecule ████ ███ ██████ ██ █████ ██████ █████████ ████ ████████ ███████ █ ██████ ██████ █████████

b

The only factor ███████████ ███ █████████ █ ██████████ ████████ ██ ██ ███████ ██ ██████ █████████ ██ ███ ████ ███ █████ ██ ████ ██████████ ████████ ███

c

A hemoglobin molecule ████ ███ ██████ ██ █████ ██████ █████████ ████ ██ ████ █████████ ██ ███████ ██ ███████ ██████ ████████ ████ ████ █ ██████████ ████████ ████ ███ ██████ ██ ████ ███ ██████ █████████

d

A hemoglobin molecule ████ ███ ██████ ██ ████ ██████ █████████ ████ ████ ███ ████ █████ ██ █ ██████████ ████████ ████ ███ ███ ██████ ██ ███ ██████ ██████████

e

Each hemoglobin molecule ██ █████ █████ █████ ██ ███████ ███ ███ ████ ██████ █████████ ██ ██ ████ ███ █████ ███ ██████████ ████ ██ ████ █████ ████ ██ ███ █████

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