Criteria Parenchyma Collenchyma Sclerenchyma Location in the plant body Shape Cell wall thickness Cell wall quality (+/-) of protoplast at maturity (+/-) of intercellular space Function(s)

1. As a science student, you're working in the lab using your compound microscope. The room is quite dim-lighted with only fluorescent lamp on. You're examining a plant cell with a light green color and it seems that it's hard for you to get a clearer view of its nucleus. What must be done to make your study successful? 2. Donating a pint of blood reduces blood volume, which results in a decrease in blood pressure (just as air pressure in tire decreases as is let out of the tire). What effect does donating blood have on heart rate? What would happen if a negative feedback mechanism did not return the value of some parameter such as blood pressure to its normal range? Please only answer these questions briefly. Thank you

For each of the electron micrographs below, identify the marked cellular component. Use Chapter 3 in your text as reference. Next to the name of the cellular component, identify one function of that component. a C b e Figure 1. Electron micrograph of a young plant cell.

10. Place the letter of the correct response in the space provided. Each answer may be used more than once; only one answer per question.