Bulk diffusion Study guides, Class 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...

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...

AP Biology - Unit 2 Study Guide Questions with Verified Answers Describe diffusion and give some specific examples of molecules which move by diffusion. - The random thermal motion of particles of liquids, gases, or solids. In the presence of a concentration or electrochemical gradient, diffusion results in the net movement of a substance from a region where it is more concentrated to a region where it is less concentrated. - The movement of particles of any substance, so that they tend ...

Passive Transport - Answer-No energy requirement; diffusion, faciliated diffusion, filtration, and osmosis Active Transport - Answer-Against concentration gradient and needs carrier. Bulk transport- Exocytosis, endocytosis, phagocytosis, and pinocytosis Simple diffusion - Answer-always happens in favor of [] gradient based on kinetic energy of molecules causing their movement through membrane openings or intermolecular spaces. Flicks Law of Diffusion - Answer-net rate of diffusion C.A.AS.T...

Basics of diffusion, gradients, and how they relate - Answer-Diffusion: spontaneous movement of very small things. It requires no energy investment by the organism (other than keeping the temperature above freezing) --direction is random Gradients: top of gradient = high concentration, bottom of gradient = low concentration --diffuses high to low Basics of diffusion across a semipermeable barrier - AnswerFactors that speed up or slow down diffusion - Answer-size: smaller things diffuse fas...

ATP - (adenosine triphosphate) main energy source that cells use for most of their work. 1 nucleotide + 3 phosphate group makes it unstable. If loses phosphate group becomes ADP ATP is composed of - ribose (a sugar), adenine (a nitrogenous base), and three phosphate groups Coupled reactions - Energy releasing action usually in the form of ATP breakdown Release of ATP+P causes myosin to change shape and cause muscle movement What do plants and other living organisms need for food - Photosynt...

Biol 1201 Exam 2 Gregg Latest Update Already Passed Plasma membrane A selectively-permeable phospholipid bilayer forming the boundary of the cells. Hydrophilic heads and hydrophobic tails peripheral proteins Bound to the surface of the membrane Integral proteins penetrate the hydrophobic core Transport proteins Span membrane. Allow passage of hydrophilic substances functions of plasma membrane transport, enzymatic activity, signal transduction, cell-cell recognition, intercel...

Discovering Psychology the Science of Mind 1st Edition Test Bank by Cacioppo Freberg Chapter One: The Science of Mind - The Discipline of Psychology MULTIPLE CHOICE 1. Which of the following best describes the mind? a. The basis of rational thought c. The embodiment of the soul b. The hidden instinctual self d. The brain and its activities ANS: D PTS: 1 DIF: Remember REF: What Is Psychology? OBJ: LO1 2. The scientific study of behavior and mental processes is called ____. a. introspecti...

All Domains Jean Inman Questions with Explanations of Answers Which amino acids must be present in a parenteral solution? a. valine, leucine, glycine, alanine b. tryptophan, phenylalanine, threonine, isoleucine c. phenylalanine, methionine, arginine, tyrosine d. lysine, glutamic acid, alanine, glycine - ANS- b. tryptophan, phenylalanine, threonine, isoleucine A parenteral solution requires adequate supplementation of all essential amino acids. Essential amino acids = those that can...

Straighterline A&P Quiz 3 Exam Questions and Answers Which of the following activities is a function of the plasma membrane? a. digestion of unneeded cell organelles b. recognition of bacterial cells by the immune system c. transport of products from the nucleus to the endoplasmic reticulum d. cell metabolism e. detoxification -Answer-b. recognition of bacterial cells by the immune system In order to study in detail the anatomy of internal cell parts, it would be best to use a. x-rays. ...