What is an advantage of eukaryotic cells having internal membranes?
|
mitochondria and chloroplasts are organelles which evolved from symbiotic bacteria which used their membranes as centers for generating energy. Once internalized into the eukaryotic cell, their outer membranes became the inner membranes, which are still involved in energy production, of the organelles. because the ancestral bacteria required a specific environment to grow, the outer membrane of the organelle acts like an incubator to keep the inner organelles active.
\( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\) Show The cell is the basic unit of life. Based on the organization of their cellular structures, all living cells can be divided into two groups: prokaryotic and eukaryotic (also spelled procaryotic and eucaryotic). Animals, plants, fungi, protozoans, and algae all possess eukaryotic cell types. Only bacteria have prokaryotic cell types. Eukaryotic cells are generally much larger and more complex than prokaryotic. Because of their larger size, they require a variety of specialized internal membrane-bound organelles to carry out metabolism, provide energy, and transport chemicals throughout the cell. Eukaryotic cells contain a variety of internal membrane-bound organelles that are not a part of the endomembrane system. These include mitochondria, chloroplasts, lysosomes, peroxisomes, vacuoles, and vesicles. We will now look at the various membrane-bound organelles. This page titled 7.4: Other Internal Membrane-Bound Organelles is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Gary Kaiser via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. the infolding of the membranes increased the surface area available to complete life-sustaining chemical reactions. the division of labour could be compared to the assembly line in Ford Motors a century ago, increasing efficiency by reducing complexity of large tasks into a series of smaller tasks. A) can't be correct - binary fission is a much faster means of reproduction, compared to the complexity of cell division of eukarya (ie. mitosis) B) there's a weak connection here - the inner membrane of the mitochondrion is folded in such a manner as to allow more instances of the electron transport chain to occur concurrently - the reason I wouldn't choose this option is that it doesn't reference the vast majority of infoldings in the cell (ie. Endoplasmic reticulum & Golgi body) D) I don't see how this can be correct - the compartmentalization of DNA isolates it from the environment and the teratogens that might induce mutation. Why are internal membranes important?Biological membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the ...
What is the internal membrane in eukaryotic cells?In eukaryotic cells, the membrane that surrounds the nucleus — commonly called the nuclear envelope — partitions this DNA from the cell's protein synthesis machinery, which is located in the cytoplasm.
Why is it important for eukaryotic cells to have interior compartments?Compartmentalization increases the efficiency of many subcellular processes by concentrating the required components to a confined space within the cell.
|
