Answer: C. Pesticides is the correct answer.
Answer:
The correct option is <em>C) The organism has cells that are able to take in energy.</em>
Explanation:
Option A is false because the organism the question does not specify that the organism is either a plant or animal. It can be fungi or bacteria etc.
Option B is false because the information given in the question does not specify the organism to be unicellular. It can be multicellular.
Option D is false because if the organism is unicellular, then it will have only one. It won't have many cells to eliminate waste. Also, every cell is able to eliminate waste.
Option C is correct because all cells whether unicellular or multicellular need energy to carry out tasks. This statement would be true for any kind of organism.
Answer:
To maintain homeostasis within the cell
Explanation:
The function of the cell membrane is to maintain homeostasis (stable environment) within the cell.
Answer:
E. are found in nitrogen-fixing cyanobacteria AND are used to protect nitrogenase.
Explanation:
Heterocysts are specialized cellular compartments found in nitrogen fixing cyanobacteria. They provide the ideal anaerobic environment for nitrogen fixation since nitrogenase enzyme cant work in presence of oxygen. Hence, in a cyanobacteria both the oxygen requiring photosynthesis process and the oxygen sensitive nitrogen fixation process takes place simultaneously.
Heterocysts have an additional cell wall made of glycolipid that provides a hydrophobic barrier to oxygen. They are involved in production of nitrogenase and other proteins that are required for nitrogen fixation. They also degrade photosystem II which is responsible for producing oxygen and produce proteins which remove any remaining oxygen.
Answer:
"
Natural gas does not produce greenhouse gases as other energy sources do."
Explanation:
The answer, "Coal deposits are found on nearly every continent and mining coal poses few risks." shows only how it can be a better option, but does not show how it can benefit.
The answer, "Petroleum is relatively inexpensive compared to other forms of energy." only shows how it can be a better option, but does not show how it can benefit.
The answer, "Nuclear power increases water vapor in the atmosphere." does not clearly state how this benefits us.
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