The plant contains eukaryotic cells.
The correct option is (A) solar radiation strikes the poles at a lower angle and travels through more atmosphere.
The main reason polar regions are cooler than the equator is that solar radiation strikes the poles at a lower angle and travels through more atmosphere.
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Why polar regions are cooler than the equator?</h3>
- Because they get much less solar energy than the tropics and mid-latitudes do, the earth's two pole regions are chilly.
- At either pole, there are six months of nonstop darkness and the sun never rises higher than 23.5 degrees over the horizon.
- Furthermore, the dazzling white surface reflects the majority of the sunlight that does reach the polar areas.
- The Arctic Ocean serves as a useful heat reservoir, absorbing heat from the atmosphere in the summer and warming the chilly winter environment.
Learn more about the equator and polar regions with the help of the given link:
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Answer;
-Dendrites receive chemical signals.
-When more excitatory than inhibitory signals are received, the cell depolarizes.
-An action potential is set off and travels through the cell and down the axon.
-The action potential excites the terminal buttons to release their chemicals into the synaptic cleft.
Explanation;
-The electrical signal that passes along the axon and subsequently causes the release of chemicals from the terminal buttons
. Chemical signals (excitatory and inhibitory signals.
-Positive sodium pours into the breach, Action potential propagates along the axon, after firing returns to its slightly negative resting state.
-An action potential can be generated if the amount of excitatory input can raise the membrane potential to -55 mV. This then floods the cell with sodium ions and raises the membrane potential. When it reaches a certain point (about +30 mV), the sodium ion channels close and the potassium ion channels open. This drops the membrane potential back down.
Arteries carry the oxygen-rich blood, veins carry the oxygen-poor ones
Answer:
C. pH and temperature
Explanation:
Enzyme activity can be affected by a variety of factors such as temperature and pH
