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bound
Definition
Bound means to be tied or held together.
In science, bound means that two or more atoms are joined together by a chemical bond.
The strength of a chemical bond depends on the type of bond and the atoms involved.
Ionic bonds are the strongest type of bond, followed by covalent bonds and metallic bonds.
Chemical bonds are what hold atoms together to form molecules.
Molecules are the basic units of matter.
How can the word be used?
The package was bound with string.
Different forms of the word
Noun:
bound (a limit or boundary).
bound (a leap or jump).
Adjective:
bound (tied or fastened).
bound (obliged or obligated).
Verb:
to bound (to leap or jump).
to bound (to move or travel at a fast pace).
to bound (to be limited or restricted).
Etymology
The word "bound" has two etymological roots:
The Old English word bindan, meaning "to tie or fasten." This root is also the source of the words "band," "bind," and "bondage.".
The Old Norse word binda, meaning "to tie or fasten." This root is also the source of the word "bindweed.".
Question
What does bound mean?
AQA Science Exam Question and Answer
Question:
Explain the term "bound" in the context of cellular structures. What is the significance of cell membranes being selectively permeable?
Answer:
In the context of cellular structures, "bound" refers to the presence of a cell membrane that surrounds and encloses the contents of a cell. The cell membrane acts as a protective barrier, separating the cell's interior from its external environment.
Significance of Selectively Permeable Cell Membranes:
Cell membranes are selectively permeable, meaning they allow the passage of certain substances while restricting others. This selective permeability is crucial for regulating the transport of molecules into and out of the cell, maintaining internal balance, and protecting the cell from potentially harmful substances. It allows essential nutrients and molecules to enter the cell while preventing the passage of harmful toxins or unwanted substances. Additionally, it enables the cell to maintain homeostasis by controlling the exchange of ions and molecules with the external environment.