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Membrane Structur

QuestionAnswer
The process of secretion in which an intracellular vesicle fuses with the plasma membrane so that the vesicles's contents are released outside the cell is called what? Exocytosis
What is the source of the vesicles used for exocytosis? Golgi body
What is an example of regulated secretion? The pancreatic cells releasing insulin in response to a rise in blood sugar
Exocytosis or endocytosis: which involves the inward pinching of the plasma membrane to form a vesicle? Endocytosis
The transportation of small substances in extracellular fluid into the cell by the formation of a vesicle by the plasma membrane is a type of endocytosis called ________ Pinocytosis
What makes receptor-mediated endocytosis different than the general process of pinocytosis? Pinocytosis is less selective
Vesicles that enclose macromolecules during exocytosis are composed of: Phospholipids bilayers
What is needed to complete active transport of molecules? Energy, carrier protein, plasma membrane
In order to move molecules, active transport requires ________ to be spent energy
What are the primary components of the extracellular matrix? Polysaccharides and proteins
What is an example of active transport? Glucose is absorbed in the gut, going from lower to a higher concentration gradient.
What structure forms the sodium-potassium pump? A carrier protein
The sodium-potassium pump moves sodium ions to the outside of the cell and potassium ions to the inside the cell. Both ions are moved from a lower to a higher concentration. This type of transport is called ________transport. active
What is the steroid molecule that is embedded in the phospholipid bilayer of the cell membrane which helps to normalize membrane fluidity called? Cholesterol
What are the molecules that contain both hydrophilic and hydrophobic regions called? Amphipathic
What role do proteoglycans play during development? They guide cell migration
Which type of molecule assists cell signaling by regulating the movement of molecules through the CM to the plasma membrane? Proteoglycan
What is the bursting or disruption of the cells membrane called? Cytolysis
What is the adhesive protein in the extracellular matrix that binds to integrin called? Fibronectin
What functions do integrins serve in the extracellular matrix? Cell-to-cell signaling
In animal cells, the shriveling of the cell due to water leaving the cell when the environment is hypertonic is called: Crenation
The process of copying the genes DNA into RNA Transcription
The process of using RNA to synthesize protein Translation
What is the central dogma of biology? DNA is transcribed into MRNA then translated to protein
where does transcription and processing of the newly made mRNA occurs? In the Nucleus of the cell
This is the RNA copy of DNA that contain the instructions to make a protein: messenger RNA (mRNA)
This is the RNA molecule responsible for delivering amino acids to the ribosome. transfer RNA (tRNA)
What is the process of photosynthesis? It allows plants to capture the energy from sunlight and use that energy yo convert carbon dioxide and water into glucose
Where does photosynthesis in plants takes place? In the Chloroplasts
What is the dense fluid within the chloroplasts called? Stroma
These are an elaborate system of interconnected membrane sacs: Thylakoids
What provides a common and universal energy currency because it can be used in many different types of reactions? ATP
Describe the ATP cycle In cells, ATP carries energy between exergonic reacions and endergonic reactions. When a phosphate group is removed by hydrolysis, ATP releases the appropriate amount of energy for most metabolic reactions.
Exergonic reaction: -The hydrolysis of ATP release previously stored energy allowing the change in free energy to do work and drive other processes -Has negative delta G
Endergonic Reaction: -Creation of ATP from ADP and P requires input of energy from other sources. -Has a positive delta G
Explain why ATP is an effective short-term energy storage molecule ATP holds energy but gives it up because it is unstable and the last phosphate group can be easily removed, releasing energy
Created by: Jseverin03
 

 



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