Polar molecules diffusion - Study guides, Class notes & Summaries

Compartmentalization correct answers The segregation of functions into different compartments; in the cell, increases the efficiency of chemical reactions Lipid correct answers Any organic molecule that is poorly soluble or virtually insoluble in water but is soluble in nonpolar organic solvents; make up the membranes of cells Membrane correct answers Made of either phospholipids or phospholipids and sterols; often bilayers with polar head group facing outside from hydrophobic tails Per...

Bio 1201 exam 2 gregg Questions With 100% Correct Answers 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 transmemb...

AQA A Level Biology 4/5/6 mark questions (2022/2023) (Certified Answers) Many different substances enter and leave a cell by crossing its cell surface membrane. Describe how substances can cross a cell surface membrane. (5) 1 (Simple / facilitated) diffusion from high to low concentration / down concentration gradient; 2 Small / non-polar / lipid-soluble molecules pass via phospholipids / bilayer; OR Large / polar / water-soluble molecules go through proteins; 3 Water moves by osmosis ...

AQA A LEVEL BIOLOGY 4/5/6 MARK EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+ Many different substances enter and leave a cell by crossing its cell surface membrane. Describe how substances can cross a cell surface membrane. (5) Correct Answer: 1 (Simple / facilitated) diffusion from high to low concentration / down concentration gradient; 2 Small / non-polar / lipid-soluble molecules pass via phospholipids / bilayer; OR Large / polar / water-soluble ...

Complete Test Bank The Human Body in Health and Illness 7th Edition by Barbara Herlihy Chapter 01: Introduction to the Human Body Herlihy: The Human Body in Health and Illness, 7th Edition MULTIPLE CHOICE 1. What is the branch of science that studies how the body functions? a. Anatomy b. Histology c. Pathology d. Physiology ANS: D 2. Which word comes from the Greek word meaning “to dissect”? a. Anatomy b. Histology c. Pathology d. Physiology ANS: A 3. Which of the follow...

PHYS Mid Term MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Physiology is the study of A) the facial features as an indication of personality. B) the tissues and organs of the body at the microscopic level. C) growth and reproduction. D) the normal functions of the organ systems. E) the structure of the body. 2) The following is a list of several levels of organization that make up the human body. 1. tissue 2. cell 3. orga...

Bio-100 Exam 1- Cells Questions and Answers Graded A+ **What is an "educated guess" about what causes an observed phenomenon called?** Hypothesis **What element forms the "backbones" of the macromolecules of life?** Carbon **Which macromolecules are composed of amino acids?** Proteins **What type of chemical bond stabilizes crystals of table salt (NaCl)?** Ionic Bonds **What is the chemical bond between amino acids called?** Peptide bond **Water (H2O) and m...

In a protein, the chemical bond bond making up and binding amino acids is the ___________ bond while the bond responsible for providing the three dimensional or globular structure of proteins is the ____________bond. A) ionic, hydrogen B) ionic, covalent C) hydrogen, ionic D) covalent, hydrogen E) hydrogen, covalent - ️️D) covalent, hydrogen Which of the following planes creates right and left sides to the body? A) transtrabecular B) parasagittal C) sagittal D) horizontal E) fro...

Test Bank For Vander’s Human Physiology 14th Edition A Descriptive Test Bank for Vander’s Human Physiology 14th Edition By Eric P. Widmaier Dr., Hershel Raff, Kevin T. Strang Dr. What is this product? Test Bank for Vander’s Human Physiology 14th Edition is not a textbook, instead, this is a test bank or solution manual as indicated on the product title. Test Bank: This is a supplement to the textbook created by experts to help you with your exams. It is a collection of exam questions based...

OCR Biology PASSED Exam Questions and CORRECT Answers Allele - Ans Different forms of a gene Loci - Ans Location of a gene on a chromosome log phase - Ans The period of exponential growth of bacterial population. lag phase - Ans "flat" period of adjustment, enlargement; little growth interspecific competition - Ans competition between members of different species What molecules travel by diffusion - Ans Small non-polar molecules