Question

focus question: what are the most important points for this investigation?

text	questions

| 1 have you ever wondered why bread dough will rise? bread dough contains yeast, a single - celled organism, that gets its energy from sugar, just like the cells in your body do. yeast can serve as a model organism that we can use to investigate processes that humans have in common with yeast. | 1) how would you describe yeast?
evidence from text

1. choose an option yeast are similar to the cells in our body.

evidence from text

1. why are we conducting an investigation of yeast?

evidence from text |
| 2 all living things need energy to survive. in this investigation, we will explore how yeast generate energy through a process called cellular respiration. by varying the amount of sugar we provide yeast, we can uncover more about how the process works, and what materials are needed to complete it. | 4) choose an option energy is necessary for organisms.
evidence from text

1. choose an option cellular respiration is an example of a process.

evidence from text

1. what is the purpose of this investigation?

evidence from text

1. what will be the independent variable (variable that changes)?

evidence from text |
| 3 how can we measure the rate of cellular respiration in yeast? we can measure the output(s) of the process through a few methods:

• size of a balloon: we can capture the amount of gas that is produced by measuring the increase in the volume of a balloon.
• height of foam: when yeast undergoes respiration, bubbles are produced. by measuring the height (volume) of foam, we can estimate how much cellular respiration is taking place. | 8) what will be measured in yeast?

evidence from text

1. what are the 2 methods in which you will be measuring the rate of respiration?

evidence from text |

Explanation:

1)

From the text: "Bread dough contains yeast, a single - celled organism, that gets its energy from sugar, just like the cells in your body do. Yeast can serve as a model organism that we can use to investigate processes that humans have in common with yeast." So we can describe yeast as a single - celled organism that gets energy from sugar and can be a model organism to study human - common processes.

The relevant text is "Bread dough contains yeast, a single - celled organism, that gets its energy from sugar, just like the cells in your body do." So the evidence is this sentence.

From the text: "Yeast can serve as a model organism that we can use to investigate processes that humans have in common with yeast." So we conduct the investigation of yeast because it can be a model to study processes common with humans.

Answer:

Yeast is a single - celled organism that gets energy from sugar and can be a model organism to study processes humans have in common with it.

2)