16 Questions
What is the role of ions in cellular reactions?
Are necessary for the operation of cellular control mechanisms
Which ion is NOT mentioned as an important ion in the cell?
Chlorine
In nerve and muscle fibers, what is the role of ions at the cell membrane?
Required for transmission of electrochemical impulses
What constitutes the majority of the cell mass after water?
Proteins
Which type of proteins are present mainly in the form of long filaments in the cell?
Fibrillar proteins
What is the main function of ions in cellular reactions?
Acting at the cell membrane for transmission of electrochemical impulses
Where are extracellular fibrillar proteins typically found?
In collagen and elastin fibers of connective tissue
What is the primary purpose of structural proteins in the cell?
Forming microtubules for providing cytoskeletons
What role do ions play in the operation of cellular control mechanisms?
Facilitating nerve impulse transmission
Which cellular component do fibrillar proteins contribute to in connective tissues?
Extracellular matrix
How do ions contribute to cellular reactions?
By providing inorganic chemicals for reactions
What is the primary function of intracellular filaments composed of structural proteins?
Providing structural support within the cell
In what way are ions essential for nerve and muscle function?
Stabilizing cell membranes
Which proteins are mainly responsible for forming microtubules in cells?
'Structural' proteins
'Cytoskeletons' in cellular organelles are primarily composed of which type of proteins?
'Structural' proteins
'Collagen and elastin fibers' containing fibrillar proteins are primarily found in which part of the body?
Connective tissues
Explore the important ions in a cell such as potassium, magnesium, phosphate, sulfate, bicarbonate, sodium, chloride, and calcium. Understand their roles in cellular reactions and cellular control mechanisms, especially those at the cell membrane.
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