Phospholipid - Study guides, Class notes & Summaries

BIO 101 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS What makes the "head" of a phospholipid hydrophilic? A) The even distribution of electrons across the fatty acids makes the head polar. B) The uneven distribution of electrons across the fatty acids makes the head polar. C) The phosphate group carries a negative charge, making the head polar. D) The phosphate group carries a negative charge, making the head nonpolar - ANSWER C Which would most likely pass unaided through a pla...

homeostasis Answer all body systems working together to maintain a stable internal environment (i.e., the resistance to change to ensure body functions remain in a normal range) receptor detects change -> processed in control centre; sends instructions -> effector carries out instructions autoregulation (intrinsic) vs extrinsic regulation in homeostasis Answer automatic response in a cell/tissue/organ vs response by NV/endocrine system negative feedback Answer response minimises/st...

Phospholipid Bilayer Exam Questions And Answers...

What is the basic framework of biological membranes? Ans: The phospholipid bilayer What are the 3 components of the phospholipid bilayer? Ans: Phospholipids, proteins, carbohydrates How is the phospholipid bilayer divided? Ans: Into asymmetrical leaflets What does it mean for the membrane to be semifluid? Ans: Phospholipids move laterally and rotationally, but not in 3 dimensions (no ATP required) What does it mean for phospholipids to flip flop? Ans: Phospholipids turn upside down an...

ATI TEAS 6 EXAM STUDY GUIDE 2023|2024 UPDATE Science CeLL Cell: basic organizational unit of all living things. One thing in common is they all have membranes (phospholipids). Cell structure organization: All cells contain DNA, and RNA & can synthesize proteins. Consists of nucleic acids, cytoplasm, and cell membrane. o Tissues: Cells that are grouped together o Organs: Tissues that are grouped together o Systems: Organs that are grouped together o Organism: A complete individual ...

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...

Phospholipid Bilayer Ans: Double layer that separates internal and external environments of the cell Amphipathic Ans: Molecules with hydrophilic heads and hydrophobic tails Integral Proteins Ans: Proteins that penetrate the hydrophobic interior of the lipid bilayer Peripheral Proteins Ans: Proteins loosely bound to the surface of the membrane Transmembrane Proteins Ans: Proteins that span the membrane 2 Six Major Functions of Membrane Proteins Ans: Transport, enzymatic activity, sign...

Homeostasis Ans: The process of maintaining balance in an organisms internal environment 1. Separates inside of cell from outside of cell 2. Controls the substances that leave and enter the cell Ans: 2 cell membrane functions Their cell membrane allows nutrients to come inside and allows waste to leave Ans: How do cells maintain homeostasis? Phospholipid Ans: A molecule with a glycerol backbone, 2 fatty acid chains, and a phosphate group A glycerol backbone, 2 fatty acid chains, and a p...

UT TYLER FNP NURS 5350 ADV PATHO/NUR6203 EXAM 1 QUESTIONS AND ANSWERS (2023/2024) (VERIFIED ANSWERS) Seven specialized cellular functions: - ANSWER movement, conductivity, metabolic absorption, secretion, excretion, respiration, and reproduction Nucleus - ANSWER aids in cell division and control of genetic info, contains DNA (think the egg yolk) Ribosomes - ANSWER RNA-protein complexes; float freely in cytoplasm; provide sites for cellular protein synthesis; packages and modifie...

Cell membrane Ans: Flexible and allows a unicellular organism to move Homeostasis Ans: Balanced internal condition of cells Equilibrium Ans: (Homeostasis) maintained by plasma membrane controlling what enters and leaves cell Functions of plasma membrane Ans: Protective barrier, regulates transport in ad out of cell, allows cell recognition, provides anchoring sites for filaments of cytoskeleton, provides binding site for enzymes, contains cytoplasm Phospholipids 2 Ans: Make up ce...