Cell Structure and Function Quiz

Cell membranes and cell organelles are involved in intracellular mechanisms such as adenosine triphosphate (ATP) production, protein secretion and processing, and maintaining intra- and extracellular ion compositions.

Membranous organelles are surrounded by a membrane similar to the cell membrane, while non-membranous organelles are not surrounded by a membrane.

Membranous organelles include mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Non-membranous organelles include ribosomes, microtubules (centrioles, cilia, and flagella), and filaments (thin, thick, and interm).

<p>Cell membranes are formed of a phospholipid bilayer studded with proteins and surface (outer) carbohydrates, with membranes ranging from 7.5 to 10 nm in thickness.</p> Signup and view all the answers

<p>The cytoskeleton is responsible for maintaining the shape and motility of the cell.</p> Signup and view all the answers

<p>The cytoskeleton is responsible for maintaining the shape and motility of the cell, providing structural support, and facilitating intracellular transport and cell division.</p> Signup and view all the answers

<p>Membranous organelles are surrounded by a membrane similar to the cell membrane, such as mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Non-membranous organelles are not surrounded by a membrane and include ribosomes, microtubules (centrioles, cilia, and flagella), and filaments (thin, thick, and intermediate filaments).</p> Signup and view all the answers

<p>Cell membranes maintain intra- and extracellular ion compositions by selectively allowing ions to pass through the membrane via ion channels and pumps, thus regulating the ion concentrations inside and outside the cell.</p> Signup and view all the answers

<p>Cell membranes are composed of a phospholipid bilayer studded with proteins and surface carbohydrates. They function to regulate the passage of substances in and out of the cell, maintain cell shape, and facilitate cell-cell communication.</p> Signup and view all the answers

<p>Cell organelles are involved in intracellular mechanisms such as adenosine triphosphate (ATP) production, protein secretion and processing, and maintaining intra- and extracellular ion compositions. For example, mitochondria are responsible for ATP production, while the endoplasmic reticulum is involved in protein secretion and processing.</p> Signup and view all the answers