Answer - Viruses are not made out of cells, they can't keep themselves in a stable state, they don't grow, and they can't make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.
Answer: The correct answer is option D
SECONDARY ACTIVE COUNTER-TRANSPORT
Explanation: Secondary active transport is a type of transport that involves molecules across the cell membrane utilizing or making use of energy in other forms than Adenosine Triphosphate (ATP).
The energy that is being made use of comes from the electrochemical gradient created by pumping ions out of the cell. This can be either via antiport or symport.
Antiport or Counter-transport means that 2 different molecules or ions are being transported at the same time but opposite directions. One of the species is allowed to flow from high concentration to a lower concentration (often Sodium) while the other species is transported simultaneously to the other side.
Example is Na+-H+ counter-transport, the example and advantage of this transporter is clearly seen in the proximal tubules of the kidneys. The mechanism for concentrating H+ is not nearly as powerful as Primary active transport, however it can transport extremely large numbers and thus making it a key in H+ homeostasis in the body.
1. E: Photosynthesis; D: cellular respiration
2. all Eukaryotic cells
3. cellular respiration does not consume carbon dioxide
4. the 200 calorie food contains less potential energy than the 300 calorie food
Answer:
Explanation:
Without the presence of decomposers and detritivores in a forest ecosystem organic material would not break down and the nutrients would no longer be available to other organisms. Moreover, dead plants and animals will pile up. Because, detritivores eat fragments of dead matter in an ecosystem and decomposers break down dead organisms so the environment will no longer be clean.
