Amphipathic molecules - Study guides, Class notes & Summaries

cbns 101 midterm 1 test questions & answers 2024/2025 cell membrane permeability - ANSWERSsmall nonpolar molecules/ oxygen, small polar molecules/water, no ions, no large polar molecules lipid bilayer properties - ANSWERScomposed of lipids and proteins. lipids are amphipathic making it energetically favorable to spontaneously assemble into bilayers in aqueous solutions/hydrophobic interior and hydrophilic heads interact with environment/leads to sealed rings of lipids three types of l...

UNDERSTANDING PATHOPHYSIOLOGY 6th EDITION BY HUETHER TEST BANK WITH ALL COMPLETE CHAPTERS 2024. Chapter 01: Cellular Biology Huether & McCance: Understanding Pathophysiology, 6th Edition MULTIPLE CHOICE 1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? a. A single circular chromosome b. A nucleus c. Free-floating nuclear material d. No organelles ANS: B The cel...

Dehydration Small molecules combine to form larger ones. For example: sugar monomers combine to form starch polymers Hydrolysis One larger molecule is split by the addition of H+ and OH- (from water) to the components Polymers large chains of identical molecular units strung together Monomers the units that serve as the building blocks of polymers Another name for a dehydration reaction is... condensation reaction Cells contain ___ major families of sma...

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...

Anatomy - studies the form and structure of the body Physiology - examines how the body func ons cytology - study of body cells and their internal structure Pathophysiology - relationship between the func on of an organ system and disease or injury to the system Characteristics That Describe Living Things - organization, metabolism, growth and development, responsiveness, regulation, reproduction Muscular System - -Locomotion -Heat production (Muscles,Tendons) endocrine sys...

BIOL 1P91 Final Exam Real Questions With Answers What are the 3 general components that make up an atom? - ANSWER Protons Neutrons Electrons The sum of the atomic number and the number of neutrons is: - ANSWER A (the atomic number) Mass Number Which of the following is/ are a polar bond? A) O-H bond in water * B) C-O in CO2 C) N-N in N2 D) all of the above E) two of the above - ANSWER A) O-H bond in water A substance dissolvable in oil is said to be: - ANSWER Hydrophobic -...

_______ are the prominent macromolecules in cells - Proteins ________ _________ - compounds containing both carbon and hydrogen atoms - Organic chemicals __________ molecules (e.g. soap, _phospholipids_) have both hydrophobic and hydrophilic properties. - Amphipathic A ________ fatty acid forms a triglyceride whose straight chains pack together to form solid fats. - Saturated A compound microscope used the total magnification of the ______ lens and the _____ lens.w - Ocular, objective A...

What are the 3 general components that make up an atom? - Answer- Protons Neutrons Electrons The sum of the atomic number and the number of neutrons is: - Answer- A (the atomic number) Mass Number Which of the following is/ are a polar bond? A) O-H bond in water * B) C-O in CO2 C) N-N in N2 D) all of the above E) two of the above - Answer- A) O-H bond in water A substance dissolvable in oil is said to be: - Answer- Hydrophobic - since oil is hydrophobic, it will dissolve hydr...

The central dogma of molecular biology refers to transcription and translation. Transcription completes the process using DNA's to make_____whereas translation is using_____to make proteins. - RNA's, RNA's Cell membrane is formed by two layers of phospholipids. Therefore, the thickness of cell membrane is within the size range of - Macromolecules most elements are neutral because they have equal number of electrons and protons. Normal carbon 12C, has 6 electrons, 6 proton, and 6 neutron...

intermolecular forces - forces between molecules EX: HCl-HCl intramolecular forces - hold atoms together in a molecule Ex: H-Cl Types of intramolecular forces - 1. Ionic 2. Covalent - Polar covalent - nonpolar covalent nonpolar covalent bond - bond between atoms with same electronegativity polar covalent bond - bond with unequal sharing of electrons the lower the pka the - stronger the acid Buffers are ___ - solutions that resist changes in pH when strong acids or bases ...