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Questions in biology

[Done] How is hemoglobin associated with respiration? Explain.

[Done] When you step on a sharp object, you move your foot away at once. What type of response is this?

[Done] Name three animals that breathe through their skin.

[Done] Why is it necessary to remove waste material from our body? Explain.

[Done] What is the full form of DNA?

[Done] What is the pericardium? Name the instrument used to measure blood pressure.

[Done] Describe the flow of blood in the human heart. Include a diagram for reference.

[Done] What is the abdominal cavity?

[Done] Why are lungs divided into very small sac-like structures?

[Done] What happens to the carbon dioxide collected in human tissues?