Câu hỏi
The human body relies heavily on electrical charges. Lightning-like pulses of energy fly through the brain and nerves and most biological processes depend on electrical ions traveling across the membranes of each cell in our body .These electrical signals are possible,in part, because of an imbalance in electrical charges that * cexists on either side of a cellular membrane. Until recently , researchers believed the membrane was an essential component to creating this imbalance.But that thought was turned on its head when researchers at Stanfoxd University discovered that similar imbalanced electrical charges can exist between microdroplets of water and air. According the text , what is true about electrical ions? A) They can travel across membranes at an extremely high speed. B) Their charges become imbalanced outside of a living cell. C) They require a membrane to develop different charges. D) They are unable to send signals without a membrane present.
Giải pháp
4.7
(262 Phiếu)
Hải Đức
thầy · Hướng dẫn 5 năm
Trả lời
A) They can travel across membranes at an extremely high speed.
Giải thích
The text explains that electrical ions travel across the membranes of each cell in our body, and these movements are crucial for various biological processes. The key point here is that these electrical signals are possible due to an imbalance in electrical charges on either side of a cellular membrane, the discovery at Stanford University suggests that this imbalance can also exist between microdroplets of water and air, without the need for a membrane. This implies that electrical ions do not necessarily require a membrane to develop different charges or to send signals. Therefore, the correct answer is the one that aligns with the idea that electrical ions can travel across membranes at an extremely high speed, as this is consistent with the description of how biological processes depend on electrical ions traveling across cell membranes.