Question

2 multiple choice 10 points the following questions refer to an experiment that is set up to determine the relative volume of o2 consumed by germinating and nongerminating (dry) pea seeds at two different temperatures. the change in volume is detected by using a respirometer over a given period of time. the data are given below. the rate of oxygen consumption in germinating pea seeds at 26°c is 0.50 ml/min 0.25 ml/min 0.05 ml/min 1.00 ml/min clear my selection

Explanation:

Step1: Recall rate - calculation formula

The rate of a process is calculated as $\frac{\text{Change in quantity}}{\text{Change in time}}$. For oxygen consumption rate, it is $\frac{\text{Change in O}_2\text{ consumption}}{\text{Change in time}}$.

Step2: Select two points on the germinating - seeds at }26^{\circ}\text{C} \text{ line}

Let's take the initial point $(0,0)$ and the point at $t = 20$ minutes where $O_2$ consumption is $1.0$ mL.

Step3: Calculate the rate

The change in $O_2$ consumption $\Delta V=1.0 - 0=1.0$ mL, and the change in time $\Delta t = 20-0 = 20$ minutes. The rate $r=\frac{\Delta V}{\Delta t}=\frac{1.0\text{ mL}}{20\text{ min}}=0.05$ mL/min.

Answer:

0.05 mL/min