Facilitated diffusion - Study guides, Class notes & Summaries

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...

Testbank for Biology 2nd Edition from OpenStax CollegeChapter 1 1 Figure 1.6 1: C; 2: F; 3: A; 4: B; 5: D; 6: E. The original hypothesis is incorrect, as the coffeemaker works when plugged into the outlet. Alternative hypotheses include that the toaster might be broken or that the toaster wasn't turned on. 3 Figure 1.16 Communities exist within populations which exist within ecosystems. 4 B 6 D 8 C 10 C 12 B 14 D 16 Answers will vary, but should apply the steps of the scientific method. One poss...

Exam 1: NR228 / NR 228 Nutrition Guide with Questions and Verified Answers| 100% Correct | Grade A (2024/2025 Update) Chamberlain QUESTION 6 nutrient categories Answer: carbs protein lipids vitamins minerals water QUESTION factors of food selection Answer: food liking food preference food choice QUESTION MyPlate Answer: internet-based interactive tool providing recommendation based on age, sex, activity QUESTION 4 themes of MyPlate Answer: ...

a. Continuous absorption of oxygen (O2) and excretion of carbon dioxide Answer What is the primary purpose of the respiratory system? a. Continuous absorption of oxygen (O2) and excretion of carbon dioxide b. Filtering to prevent allergens and microbes from reaching the lungs c. Transport oxygenated blood to the tissues d. Warm and humidify inspired gas d. Exchange of gases between the blood and the tissue Answer What is meant by "internal respiration"? a. Any gas exchange that occurs ...

Straighterline / BIO 250 / Microbiology Midterm Exam with Complete Solutions 2024 Microbiology Midterm Exam This document is meant to be a pre-emptive study tool only. It is comprised of 5 past midterm exams. Questions on current exams are likely different. Use this BEFORE (of course not during!) the exam to study practice questions that may be similar or cover topics on the new exams, and to understand the depth of material covered so you can study better and be more prepared! 1....

Chapter: Midterm Multiple Choice 1. Which of the following cellular exchange mechanisms requires adenosine triphosphate (ATP) and the use of a carrier protein? A) Facilitated diffusion B) Osmosis C) Active transport D) Simple diffusion Ans: C Complexity: Easy Ahead: Basic Cell Function and Structure Subject: Chapter 1 Title: Cellular Function 2. What is a key determinant of osmotic pressure? A) Water B) Sodium C) Albumin D) Glucose Ans: B Complexity: Easy Ahead: Basic Cell Fu...

Bio 103 exam 2 McMullen Questions and Answers Rated A+ **What fundamental principles does cell theory encompass?** Cell theory asserts that ** all living organisms are made up of cells, which serve as the fundamental units of structure and function, and that cells arise from pre-existing cells**. **Describe the characteristics of a eukaryotic cell.** A eukaryotic cell is ** defined by the presence of a nucleus and various membrane- bound organelles**. Eukaryotes can exist as ** u...

MCDB 1150 Exam 3 cu boulder Questions & Answers 2023/2024 Membrane transport - ANSWER-• Passive diffusion through membrane • "diffusion" through pore/channel • Facilitated diffusion - carrier proteins • Active transport by transporters/pumps The ability of a molecule to diffuse through a pure lipid bilayer depends on its - ANSWER-SOLUBILITY in the hydrocarbon interior of the membrane small ions (K+, Na+, Cl-) - ANSWER-virtually IMPENETRABLE insoluble in hydrophobic...

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...

Egan's Chapter 9 - The Respiratory System REAL EXAM QUESTIONS WITH VERIFIED CORRECT ANSWERS LATEST UPDATE What is the primary purpose of the respiratory system? a. Continuous absorption of oxygen (O2) and excretion of carbon dioxide b. Filtering to prevent allergens and microbes from reaching the lungs c. Transport oxygenated blood to the tissues d. Warm and humidify inspired gas - ANSWER a. Continuous absorption of oxygen (O2) and excretion of carbon dioxide What is meant by "inter...

Exam I correct answersVersion C What is lipogenesis? correct answersWhen your body makes fat from non-fat substances ATP correct answersProduced in the mitochondria Produced by use of a high proton concentration in the inner membrane space Produced via the conversion of ADP and inorganic phosphate by the ATP synthase NOT!! Is generated at a rate exactly proportional to weight to the 3/4 power Carbohydrate digestions begins in the correct answersMouth Essential Fatty Acids correc...