Answer:
b) Travel quickly, allowing rapid transmission of signals:
Explanation
nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body very rapidly.
Answer:
The correct answer is option E.
Explanation:
C4 plants are the plants that utilize the Hatch-Slack pathway or C4 carbon fixation type of photosynthesis process in which carbon dioxide into 4 carbon sugar to move to the Calvin cycle.
These plants are present more commonly in dry and hot climates such as deserts due to their ability to the fixed carbon at a low concentration of carbon dioxide and produce more energy when stomata are closed. Corn, pineapple sugarcane and many more are examples of the C4 plants.
Thus, the correct answer is option - E.
Answer:
The five adjustments I made to the Rube Goldberg device in order to keep the flow of energy going include
Changing the angle
Putting the rubber band firmly to the white ball
Changing the position of the weight
Attaching the 5lbs to the rope on the third platform found in close proximity to the green tube so it can enter into the see saw device.
Answer:
A. If the aerobic pathway—cellular respiration—cannot meet the energy demand, then the anaerobic pathway—lactic acid fermentation—starts up, resulting in lactic acid buildup and "oxygen debt."
C. After about 90 seconds of intense exercise, the muscles become depleted of oxygen, and anaerobic respiration can no longer function to produce ATP, resulting in "oxygen debt."
Explanation:
There are two sources of carbohydrates in the human's body for energy (ATP) production. 1) Creatine phosphate and 2) Glycogen. Creatine phosphate metabolizes easily and yields ATP quickly. Whereas glycogen is stored form of carbohydrate which yields energy more slowly. Therefore, initially, our bodies use creatine phosphate and then shift to glycogen. Within 60-90 seconds, the creatinine phosphate in the body is mostly utilized and then energy is produced by the use of glycogen in aerobic pathway. During areobic pathway, oxygen supply is sufficient and per cycle, it produces 32 molecules of ATP. However, when oxygen supply is limited or absent, the body will metabolize glycogen to lactic acid via fermentation and produce only 2 molecules of ATP.
Now consider the example: Kenny hikes all day at a steady pace therefore the supply of oxygen is sufficient for aerobic cellular respiration for ATP production. In this scenario, the oxygen debt is minimal and Kenny relies on aerobic respiration pathway to obtain energy. On the other hand, Janelle runs fast (100 meters in 13.5 seconds) and her cellular respiration would be on the compense of aerobic pathway initially which will be shifted to anaerobic pathway after the supply of oxygen is reduced/minimum. Janelle will heavily rely on the anaerobic pathway because running fast needs energy which cannot be provided via aerobic pathway easily. Therefore, Janelle's body will produce lactic acid and suffer from oxygen debt.
