When the concentration of sugar is doubled, assuming there is enough yeast, what happens to the time it takes for the solution to change from blue to yellow? â?¨
2. â?¨stays the same
A test tube is setup with some yeast, sugar solution and indicator in it. The color starts at blue and begins to change to a greenish hue. At this point some vinegar, a weak acid, is dropped in the test tube. How would this affect the color of the solution? â?¨
1.The color will turn sharply to yellow â?¨
2.The color will stay at green and not turn yellow â?¨
3.The color will reverse back to blue â?¨
4.The solution becomes white with the addition of the vinegar
The range of color change for bromthymol blue is from pH 6.0 to 7.6. By what multiple does the hydrogen (hydronium) ion concentration change over this range? â?¨
A yeast cell can reproduce itself in 20 minutes. As the yeast metabolizes sugar, it will reproduce by budding, and the amount of yeast will increase. If the yeast is growing normally at the beginning of an experiment, what is the percent increase in the amount of yeast during the typical ten-minute duration of an experiment? â?¨
Which of the following would be the best method to slow the change of color from blue to yellow in the test tube? â?¨
1. Use less indicator in the test tube â?¨
2. Lower the concentration of sugar in the test tube
3. â?¨Raise the amount of yeast in the test tube
A- 1- Yeast will grow faster in a higher sugar concentration, so the medium will become acidic proportionally faster.
B- 1- Vinegar is acidic and will ...
Cell Metabolism is assessed.
Energy and Metabolism (Photosynthesis & Respiration); Cell Structure
Bacterial cells are prokaryotic. Select two structures of bacterial cells and briefly describe them; what do they look like, what are they composed of? Then, explain how these two structures allow bacterial cells to survive as unicellular organisms.
There are many examples of eukaryotic cells. Algae, Fungi, Plants, and Animals are all composed of eukaryotic cells. Some algae and fungi are unicellular organisms, but other algae and fungi, and all plants and animals are multicellular organisms that are composed of specialized eukaryotic cells that interact to support the life of the multicellular organism.
Choose either a plant or an animal cell. Choose two structures or organelles of the cell (not used in part one above.) Describe these two structures or organelles - what do they look like, what are they composed of? Then explain how these plant or animal cell structures or organelles function. How do these functions support activities of the plant or animal cell and enablesurvival of the multicellular plant or animal organism?View Full Posting Details