Carrier proteins Study guides, Revision notes & Summaries

Chapter 03: The Alimentary Canal: Digestion and Absorption Stegeman: The Dental Hygienist’s Guide to Nutritional Care, 5th Edition MULTIPLE CHOICE 1. Each is a portion of the alimentary canal, except one. Which is the exception? a. Oral cavity b. Pharynx c. Larynx d. Esophagus e. Small intestine ANS: C The larynx is not a portion of the alimentary canal. This tubular structure is approximately 30-ft long and comprises all the body parts through which food passes. DIF...

transport proteins - are responsible for controlling passage across the membrane fluid mosaic model - The membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids fatty acid tails - nonpolar, hydrophobic fatty acid heads - hydrophilic, polar periphial proteins - bound to the surface of the membrane integral proteins - penetrate the hydrophobic core (ones that span the membrane are transmembrane protiens How do cells recognize each other? - by binding to molec...

why are membranes called phospholipid bilayers? - Answer-phospholipids have hydrophilic head and hydrophobic tail, hydrophobic face inside of cell making 2 layers what is meant by fluid mosaic? - Answer-Mosaic of proteins drifting laterally in fluid bilayer of phospholipids how are membranes adjusted for different temperatures? - Answer-membrane fluidity adjusted by changing the ratio of unsaturated to saturated fatty acids how do the relative amounts of saturated and unsaturated fats chan...

PHYS 261 FINAL EXAM QUESTIONS AND ANSWERS 2023 REVIEW - Complete. An allosteric modulator binds to A) the active site. B) the product. C) a region of the enzyme other than the active site. D) the surrounding tissue. E) the substrate. 10) Permeability is a property of A) solutes. B) solvents. C) ions. D) membranes. E) proteins. 11) What are the two extracellular fluid compartments in the body? A) plasma and the fluid portion of the blood B) intracellular and plasma C) plasma and in...

PATHO- NURS 8022 EXAM 1 QUESTIONS & ANSWERS (2023/2024)(VERIFIED ANSWERS)EXAM 1 PATHO- NURS 8022 QUESTIONS & ANSWERS (2023/2024)(VERIFIED ANSWERS) Negative Feedback - ANSWER Promotes stability; cancels out the original response. Ex: High FSBS, increased insulin by the pancreas Positive Feedback - ANSWER Promotes a change in one direction; instability, DISEASE. Ex: Blood clotting, platelet cascade Proteins - ANSWER Provide selectivity to a membrane Integral proteins - ANSWER channel...

WCU - PHYS 261 FINAL EXAM LATEST ANSWERS 2022. ) Nucleic acids are polymers of units called A) ribose. B) bases. C) fatty acids. D) amino acids. E) nucleotides. 6) Cell membranes are said to be A) actively permeable. B) impermeable. C) freely permeable. D) selectively permeable. E) none of the above 7) In humans, only __________ cells have flagella. A) sperm B) intestine lining C) stomach lining D) respiratory tract lining E) two of the above 8) The addition of a phosphate grou...

Rush Advanced Pharmacology NSG 531 Exam 1 Questions and Correct Answers Drug - Answer-a substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease and a substance, other than food, intended to affect the structure or any function of the body T/F most drugs are strong acids or strong bases - Answer-F - most drugs are weak acids or weak bases what are the four things that the body does to a drug? - Answer-1. absorbs it 2. distributes it (think about...

Rush Advanced Pharmacology NSG 531 Exam 1 Questions with Correct Answers Drug a substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease and a substance, other than food, intended to affect the structure or any function of the body T/F most drugs are strong acids or strong bases F - most drugs are weak acids or weak bases what are the four things that the body does to a drug? 1. absorbs it 2. distributes it (think about it - most drugs don't hav...

ADVANCED PATHOPHYSIOLOGY- UTMB 5355 EXAM #1 Questions And Answers ( Verified ) Transcription - ANS synthesis of RNA from DNA Transcription results in - ANS mRNA RNA polymerase makes - ANS mRNA mRNA - ANS makes proteins RNA polymerase - ANS binds to DNA Transcription factors (TFs) - ANS A regulatory protein that binds to DNA and affects transcription of specific genes. Can wither activate or repress expression of genes Termination of transcription - ANS RNA poly...

integral proteins - correct answer Penetrate the hydrophobic interior of the lipid bilayer. Commerce via facilitated or active. peripheral protein - correct answer A protein loosely bound to the surface of a membrane or to part of an integral protein and not embedded in the lipid bilayer. Carbohydrate group - correct answer Linked with protein or lipids and function as adhesion. Cholesterol - correct answer Steroid common in cell membranes, also in many hormones. Functions as suppor...