Electrochemical gradient Study guides, Class notes & Summaries

3.5 Resting Membrane Potential (RMP)Resting Membrane Potential - correct answer electrical potential energy by separation of oppositely charged particles across plasma membrane in all cells Voltage - correct answer -difference in electrical charge between two points -Voltage occurs only at membrane surface -Rest of cell and extracellular fluid are neutral -Membrane voltages range from -50 to -100 mV in different cells (negative sign (-) indicates inside of cell is more negative relative to...

BIOLOGY EXAM REVIEW Q&A 1. Based on the data below, which of the following will contain the largest percentage of phosphatidylcholine (PC)? a. The leaflet of the cell membrane facing the outside of the cell. b. The leaflet of the endoplasmic reticulum membrane facing the cytosol. c. The leaflet of the inner nuclear membrane facing the inside of the nucleus. d. The leaflet of the inner mitochondrial membrane facing the matrix. 2. Which of the following statements is correct? a. All...

Describe the events of fertilisation that occur after the acrosome reaction. -Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane -Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards the centre of the bilayer Describe the role of the CFTR protein in e...

The longer the wavelength the higher the energy of an electromagnetic wave - correct answer False Which of the following elements has a valence of two? - correct answer Oxygen and Sulfur What type of bond is formed by the equal sharing of valence electrons? - correct answer A non-polar covalent bond Polar molecules, such as water, will commonly participate in which of the following intermolecular interactions - correct answer Hydrogen bonding with polar molecules. Electrostatic interaction...

Resting Membrane Potential Electrical gradients (such as the transmembrane voltage or RMP) only affects what kind of molecules? - correct answer Charged molecules What is the range of magnitudes (in millivolts) of the resting membrane potential (RMP) of human cells? - correct answer -20 to -100mv Is the inside of the cell electrically negative, or electrically positive, RELATIVE to the extracellular fluid? - correct answer negative How many volts is a millivolt? - correct answer 10^-3 ...

Bio 180 Exam 5 BYUI Questions and Answers Already Passed Lipid-soluble signal molecules, such as testosterone, cross the membranes of all cells but affect only target cells because: Intracellular receptors are present only in target cells. Which type of receptor is most associated with metabolism, cell growth, and cell division? Tyrosine kinase receptors Which type of receptor is a dimer that when bound to the proper ligand autophosphorylates? Tyrosine kinase receptors A drug designed to inh...

protonema (protonemata)a mass of green, branched, one-cell-thick filaments produced by germinating moss spores protonephridium (protonephridia)an excretory system, such as the flame bulb system of flatworms, consisting of a network of tubules lacking internal openings proton-motive forcethe potential energy stored in the form of a proton electrochemical gradient, generated by the pumping of hydrogen ions (H+) across a biological membrane during chemiosmosis protoplastthe living part o...

Basic Principles of Clinical Pharmacology Exam Questions with 100% Correct Answers Verified | Updated What are the four processes of pharmacokinetics? - answerAbsorption Distribution Metabolism/Biotransformation Excretion What are the three main routes of medication administration - answerEnteral Parenteral Topical What are some mechanisms for drug passage across membranes? - answerpassive Diffusion facilitated diffusion active transport pinocytosis What is passive diffusion? - ans...

Basic Principles of Clinical Pharmacology Exam Questions with 100% Correct Answers Verified | Updated What are the four processes of pharmacokinetics? - answerAbsorption Distribution Metabolism/Biotransformation Excretion What are the three main routes of medication administration - answerEnteral Parenteral Topical What are some mechanisms for drug passage across membranes? - answerpassive Diffusion facilitated diffusion active transport pinocytosis What is passive diffusion? - ans...

cell wall - ANSWER strong, supporting layer in plant cells Cytoskeleton - ANSWER Protein filaments that helps the cell to keep its shape, and aids in movement Flagella (cilia) - ANSWER movement of cell plasma membrane - ANSWER A selectively-permeable phospholipid bilayer forming the boundary of the cells Endoplasmic Reticulum - ANSWER Rough ER has ribosomes synthesize proteins and Smooth ER has no ribosomes synthesize lipid Nucleus - ANSWER Control center of the cell Golgi appa...