In this experiment, you measured the rate of cellular respiration for different organisms (crickets are shown). a. What is the equation for cellular respiration? b. What do you expect to happen to the level of oxygen gas in the tank containing crickets over time? c. What do you expect to happen to the level of carbon dioxide gas in the tank containing crickets over time? d. Explain why.
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Step 1: The equation for cellular respiration is: C6H12O6 + 6O2 -> 6CO2 + 6H2O + ATP Show more…
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$\begin{array}{|c|c|}\hline \text { Organism } & {\text { Temperature }} & {\text { Average respiration }} \\ \hline \text { Mouse } & {\text { (C) }} & {\text { (mL O2/g/min) }} \\ \hline \text { Mouse } & {10} & {0.0518} \\ \hline \text { Cricket } & {25} & {0.0321} \\ \hline \text { Cricket } & {25} & {0.0038} \\ \hline\end{array}$ According to the data, the crickets at $25^{\circ} \mathrm{C}$ have greater oxygen consumption per gram of tissue than do the crickets at $10^{\circ} \mathrm{C}$ . This trend in oxygen consumption is the opposite of that in mice. The difference in trends in oxygen consumption among crickets and mice is due to what? a. their difference in size b. their mode of nutrition c. their difference in metabolic heat production d. their mode of ATP production
In this experiment, you will be monitoring changes in CO2 concentration due to aerobic respiration and photosynthesis of each test organism. Which of the following results would be expected from the conditions described? Remember this is a closed system (the CO2 cannot escape), and we are monitoring changes in CO2 concentration over a 3 minute period. A) A plant will cause an overall higher increase in CO2 concentration when exposed to light versus an plant kept in the dark. B) A plant will cause an overall higher increase of CO2 concentration when kept in the dark versus a plant exposed to light. C) An animal will produce a higher increase in CO2 when exposed to the light than when kept in the dark. D) An animal will show a decrease in CO2 while kept in the dark and an increase in CO2 while in the light.
Shaiju T.
The rate at which crickets chirp depends on the ambient temperature, because crickets are cold-blooded insects whose body temperature follows the temperature of their environment. It has been found that the Celsius temperature can be estimated by counting the number of chirps in 8 seconds and then adding 4 . In other words, $t_{\mathrm{C}}-($ number of chirps in 8 seconds $)+4$. (a) Calculate the number of chirps in 8 seconds for temperatures of $20,25,30$, and $35^{\circ} \mathrm{C}$. (b) The number of chirps per unit of time is directly proportional to the rate constant for a biochemical reaction involved in the cricket's chirp. On the basis of this assumption, make a graph of $\ln ($ chirps in $8 \mathrm{~s}$ ) versus $(1 / T) .$ Calculate the activation energy for the biochemical reaction involved. (c) How many chirps would a cricket make in 8 seconds at a temperature of $40^{\circ} \mathrm{C}$ ?
Sri K.
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