1. Write a paragraph explaining how a spirometer can be used to measure
breathing rate and volume.
(6)
2. Write a second paragraph to explain how
these measurements can be used to calculate
respiratory minute ventilation and oxygen
consumption.
(4)
3. Explain the purpose of:
a) wearing a nose clip while using the
spirometer
(1)
b) the soda lime canister.
(1)

Order the steps of protein synthesis. amino acids are lined up in a sequence. rna is modified into mrna. dna is transcribed. a ribosome binds to mrna. chemical bonds are formed and a protein is produced.

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Buuy which of the following did you include in your response? organs perform specific functions in the body to keep it alive. organelles perform specific functions in cells to keep them alive. done