Aquaporins - Study guides, Class notes & Summaries

Biology 1001 MUN Section 3 Questions and Answers Rated A+ **1. What is the role of the plasma membrane in a cell?** - The plasma membrane acts as the outer living layer of each cell, serving as a gatekeeper that separates the external environment from the cell's interior. **2. What does the term "amphipathic" refer to?** - It describes molecules that have both hydrophilic (water-attracting) and hydrophobic (water-repelling) components. **3. What factors influence membrane fl...

Water flows from: a. From the roots to the soil b. High to low water temperature c. High to low water potential d. Low to high water temperature e. Low to high water potential - ANSWER High to low water potential ___________occurs when a plant wilts, and cannot recover when placed in a saturated atmosphere. a. permanent wilting point b. gravitational water c. capillary water d. saturation e. field capacity - ANSWER a. permanent wilting point (Correct) Active transport of molecu...

ATI TEAS 7 SCIENCE EXAM LATEST UPDATE 2023 QUESTIONS & ANSWERS Which of the following describes the function of tendons? o Tendons attach skeletal muscle to bone o Tendons attach two bones o Tendons attach bones to ligaments o Tendons attach skeletal muscles to ligaments Which of the following substances is excreted by sweet glands in response to the breakdown of protein and the formation of ammonia? o Lysoymes o Water o Urea o Sebum 3. Which of the following terms describes the removal of metab...

Water molecules are attracted to each other and form ________ bonds. Correct Answer Hydrogen A bond in which electrons are shared between atoms is a _______ bond. Correct Answer Covalent Which of the following is NOT true about hydrophilic molecules? Correct Answer They have equal sharing of electrons across all the atoms in the molecule Which of the following is true about hydrophilic molecules? Correct Answer They interact with the dipole moment in water They diffuse easily in wate...

Aquaporins correct answers Water selective channels in osmosis Trigliceride correct answers Composed of one molecule of glycerol and three molecules of fatty acid Dehydration synthesis correct answers Used in a try glycerol to create an ester bond Ampipathic correct answers Both hydrophobic and hydrophilic Phospholipid correct answers Composed of a phosphate head group and a fatty acid tail Phosphodiester bond correct answers Bond found in phosphate head groups and the sugar backb...

NU545 CHAPTER 3 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS LATEST UPDATE Total Body Water (TBW): Definition The sum of fluids within all compartments constitutes the TBW What are the 5 types of fluid that make up the TBW? 1. Intracellular fluid 2. Extracellular fluid 3. Interstitial fluid 4. Intravascular fluid 5. Transcellular fluids Intracellular fluid (ICF): Definition Inside the cell, 2/3 of body water Extracellular fluid (ECF): Definition Outside the cell, 1/3 of body wa...

Water molecules are attracted to each other and form ________ bonds. correct answers Hydrogen A bond in which electrons are shared between atoms is a _______ bond. correct answers Covalent Which of the following is NOT true about hydrophilic molecules? correct answers They have equal sharing of electrons across all the atoms in the molecule Which of the following is true about hydrophilic molecules? correct answers They interact with the dipole moment in water They diffuse easily in ...

Dipole Moment Correct Answer The difference in charge between atoms in a water molecule Water Molecules Interact With Each Other Through _______ Correct Answer Hydrogen Bonds Why is water liquid at room temperature? Correct Answer Because the hydrogen bonds within it are constantly breaking and reforming on different molecules (moving around) Shell of Hydration Correct Answer The oxygen atoms in water will orient themselves towards positively charged ions in water, the hydrogen atoms wi...

Select the statements below that correctly apply to characteristics of bacterial cell permeability. - has presence of aquaporins - is a barrier to passive diffusion of large compounds - is a barrier to water - can take up insoluble molecules - has presence of aquaporins - is a barrier to passive diffusion of large compounds Put the following steps in order to review the bacterial method of iron uptake for the cell. - iron scarce in environment - iron-siderophore complex binds cell surface prote...

ADH - -antidiuretic hormone -made by hypothalamus, secreted by posterior pituitary gland -small volume of urine can be produced -increases permeability of distal convoluted tubules and collecting ducts to water by stimulating an increase in the number of aquaporins in the membranes. -low levels of ADH: water perm. low, water reabs. low, and large volume of dilute urine is produced