Cell Biology Chapter 2 Quiz

<p>Constitutive secretion involves immediate release of products, while regulated secretion involves storage. (C)</p> Signup and view all the answers

<p>The cytoskeleton drives the extension of pseudopods to engulf the particle. (D)</p> Signup and view all the answers

<p>Lysosomes contain enzymes that degrade the engulfed particle. (D)</p> Signup and view all the answers

<p>Dynamin (C)</p> Signup and view all the answers

<p>The process operates in a random manner, similar to a chaotic transportation network. (B)</p> Signup and view all the answers

<p>Phagocytosis involves the engulfment of large particles, while receptor-mediated endocytosis targets specific molecules. (B)</p> Signup and view all the answers

<p>They facilitate the interaction between vesicles and their target membranes. (D)</p> Signup and view all the answers

<p>Clathrin forms a basket-like structure that drives membrane invagination. (D)</p> Signup and view all the answers

<p>They interact with docking proteins to ensure correct targeting of the vesicles. (A)</p> Signup and view all the answers

<p>Dynamin is involved in the scission of vesicles from the membrane. (A)</p> Signup and view all the answers

<p>To release molecules outside the cell. (C)</p> Signup and view all the answers

<p>Endocrine cells (C)</p> Signup and view all the answers

<p>{ &quot;A&quot;: &quot;Defects in SNARE interactions can lead to impaired neurotransmitter release, resulting in neuroparalysis.&quot;, &quot;B&quot;: &quot;Errors in SNARE interactions can cause excessive secretion of hormones, leading to hormonal imbalances.&quot;, &quot;C&quot;: &quot;Defects in SNARE interactions can result in the accumulation of misfolded proteins in the endoplasmic reticulum.&quot;, &quot;D&quot;: &quot;Errors in SNARE interactions can hinder the formation of coated pits during receptor-mediated endocytosis.&quot; } (A)</p> Signup and view all the answers

<p>To form small pinocytic vesicles for transport of soluble substances. (A)</p> Signup and view all the answers

<p>Phagocytosis (A)</p> Signup and view all the answers

<p>Greater than 0.2 µm (B)</p> Signup and view all the answers

<p>Activation by specific growth factors. (A)</p> Signup and view all the answers

<p>Both A and C (D)</p> Signup and view all the answers

<p>Large particles, including cellular debris and bacteria (A)</p> Signup and view all the answers

<p>250 nm (D)</p> Signup and view all the answers

<p>Macro-pinocytosis occurs independently of clathrin. (D)</p> Signup and view all the answers

<p>To transfer small, water-soluble molecules (A)</p> Signup and view all the answers

<p>Receptor-mediated endocytosis (D)</p> Signup and view all the answers

<p>Vesicular budding (D)</p> Signup and view all the answers

<p>They initiate endocytosis (B)</p> Signup and view all the answers

<p>Active transport moves molecules against their concentration gradient (B)</p> Signup and view all the answers

<p>Micropinocytosis (A)</p> Signup and view all the answers

<p>They create hydrophilic pathways for specific ions (D)</p> Signup and view all the answers

<p>It is involved in removing substances from the cell (C)</p> Signup and view all the answers

<p>Phagocytosis ingests large particles while pinocytosis involves liquids (C)</p> Signup and view all the answers

<p>They related to vesicle formation in lipid rafts (C)</p> Signup and view all the answers

<p>Maintaining the integrity of the cell membrane and facilitating molecular transfer. (C)</p> Signup and view all the answers

<p>Exocytosis (C)</p> Signup and view all the answers

<p>Endocytosis is the reverse process of exocytosis, with vesicle recycling. (C)</p> Signup and view all the answers

<p>Clathrin (D)</p> Signup and view all the answers

<p>The continuous formation of small vesicles, often involving caveolin proteins. (C)</p> Signup and view all the answers

<p>Phagocytosis (D)</p> Signup and view all the answers

<p>The uptake of specific molecules bound to cell surface receptors. (B)</p> Signup and view all the answers

<p>Pinching and scission of pinocytic vesicles. (D)</p> Signup and view all the answers

<p>They are found in lipid rafts and contribute to the formation of caveolae, which are involved in micropinocytosis. (A)</p> Signup and view all the answers

<p>Endocytosis is only involved in the uptake of fluids and small molecules, while exocytosis is responsible for the release of all substances from the cell. (B)</p> Signup and view all the answers

A process where cells engulf large particles, such as bacteria, using extensions called pseudopods.

Receptors on phagocytic cells that recognize antibodies bound to their target antigens.

Temporary projections of eukaryotic cells used during phagocytosis to engulf particles.

A method of endocytosis where clathrin proteins form a coated pit to internalize target molecules.

The process of cutting off a vesicle from the membrane, facilitated by dynamin.

The process by which cells internalize substances from their environment.

A cellular process that moves vesicles to the plasma membrane to release their contents outside the cell.

Organelles that contain enzymes to digest engulfed materials in phagocytosis.

A process that forms small vesicles for intake of solutes and proteins.

Large vesicles formed during macro-pinocytosis to capture extracellular fluid.

Endocytosis that does not require clathrin for vesicle formation.

Endocytosis that requires reorganization of the actin cytoskeleton.

A regulated mechanism for ingesting extracellular fluids and nutrients, involving membrane folds.

Phagocytosis that uses specific surface receptors to identify and ingest substances.

Process where receptors bind specific molecules allowing their entry into the cell.

Vesicle surrounded by clathrin proteins formed during endocytosis.

Protein that helps pinch off vesicles from the membrane during endocytosis.

Release of stored products in vesicles triggered by signals.

Immediate release of proteins without storage or signals.

Proteins that facilitate the fusion of vesicles with target membranes during secretion.

Proteins that help identify target compartments for vesicles in the cell.

Specific substances transported within vesicles during secretion processes.

Process that moves substances in and out of cells via vesicles.

Protein that assists in the formation of vesicles during endocytosis.

Non-specific uptake of fluids and small molecules by the cell.

Flask-shaped invaginations in the cell membrane formed during endocytosis.

Proteins involved in the fusion of vesicles with membranes during endocytosis and exocytosis.

The process of substances moving across the plasma membrane.

Movement of small, non-polar molecules across the membrane without energy.

Proteins that help in moving hydrophilic molecules across the membrane.

Transport requiring energy to move substances against their gradient.

Movement of substances without energy, following concentration gradients.

Processes by which cells take in substances, including receptor-mediated and pinocytosis.

Proteins that facilitate the fusion of vesicles during endocytosis and exocytosis.