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Heterotrophs
Explanation:
Heterotrophs are organisms that do not perform photosynthesis. They do not obtain their nourishment using products of synthesis of food using carbon dioxide in the presence of sunlight.
- Heterotrophs are consumers in the ecosystem.
- They use food materials from plants for their nourishment.
- The chemical energy stored in food is released during the process of cellular respiration in them.
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Answer: The options are missing from the question.
A) Na+ is bound
B) ADP is bound
C) The pump is phosphorylated
D) The pump changes conformation
The correct answer to the question is option C
THE PUMP IS PHOSPHORYLATED
Explanation: Sodium potassium pump (Na+ K+ pump) is a mechanism that uses active transport to move sodium Na+ and potassium K+ in and out of cellular compartments (intracellular and extracellular) inorder to maintain a gradient. It is responsible for maintaning a high extracellular sodium ion concentration and a high intracellular potassium ion concentration.
Once the sodium-potassium pump hydrolyses ATP,the pump will become phosphorylated (transmission of signal throughout the cell) lowing the affinity of the pump to sodium,this causes 3 sodium ions to move out of the intracellular compartment into the the extracellular compartment. The pump further brings two potassium ions together causing a dephosphorylation(inhibition of signal transmission throughout the cell) and then moves the 2 potassium ions out of the cell. This mechanism continues till there is a higher extracellular sodium concentration and a high intracellular potassium concentration therefore achieving the desired gradient(optimum)
Answer:
Healthy ecosystems and rich biodiversity are fundamental to life on our planet. Climate change is affecting the habitats of several species, which must either adapt or migrate to areas with more favorable conditions. Even the smallest changes in average temperatures can have a significant effect upon the ecosystems.
Living cells interact with each other for their proper functioning. Cell signalling plays an important cell to cell interaction. Blood cells are very important as these deliver oxygen, nutrients, etc. Blood cells also interact with each other and also with the muscle cells such as endothelial cells and smooth muscle cells (the cells of blood vessel wall).
The interaction between blood cells and muscle cells is made possible with the help of special molecule found in blood known as hemoglobin. Hemoglobin carries oxygen to the muscle cells. Oxygen attaches to the hemoglobin molecule and travels through the capillaries. Oxygen is then transferred to the muscle cells when needed.