Concept explainers
Which of the following membrane movements is not a passive process?
- osmosis
- diffusion
- active transport
- filtration
Introduction:
Passive transportation is a method in which the movement of the cellular substances takes place from one cell to another. Energy is not required in the transport of molecules.
Answer to Problem 1PL
Correct answer:
The correct answer is option (c) active transport.
Explanation of Solution
Explanation/justification for the correct answer:
Option (c) active transport. Active transportation is the passage of molecules from cell to cell. It requires energy for the process of transport as the movement is initiated against the concentration gradient. So, the correct answer is option (c).
Explanation for incorrect answer:
Option (a) osmosis. Osmosis is a process of movement of water molecules from low concentration to a high concentration. It requires no energy for the process of transport. So, this is an incorrect option.
Option (b) diffusion. Diffusion is a process of movement of molecules, ions, and atoms from high concentration to low concentration. It occurs in the absence of energy. So, this is an incorrect option.
Option (d) filtration. Filtration is a process of movement of solute or fluid against the gradient. The process of filtration occurs by applying the pressure, which can result in the movement of the molecules against the gradient. It does not require energy and filter across the semi-permeable membrane. So, this is an incorrect option.
Want to see more full solutions like this?
Chapter 6 Solutions
Connect with LearnSmart Labs for Lab Manual for Human Anatomy & Physiology
- Identify the indicated structure (Saprolegnia). a. antheridium O b. oospore c.sperm d. auxospore e. tetraspore Of. zygosporearrow_forwardUsing information from the primary literature (several references have been provided as a starting point below) please answer the following question: Based on your review of the literature on rewilding, what are the major scientific pros and cons for rewilding? Please note that the focus of this assignment are the (biological) scientific issues associated with rewilding. As will be discussed in class, there are a number of non-scientific issues involved or implicated in rewilding, all ultimately affecting the public acceptability of rewilding. Although these issues are important – indeed, critical – in this assignment you should focus on the biological science issues and questions. Details: You must enumerate at least two pros and at least two cons. Your answer should be no more than 500 well-chosen words, excluding references. Think carefully about how best to organize and structure your answer. Aim for high information density: say a lot, but say it succinctly. Recall Nietzche’s…arrow_forwardUsing information from the primary literature (several references have been provided as a starting point below) please answer the following question: Based on your review of the literature on rewilding, what are the major scientific pros and cons for rewilding? Please note that the focus of this assignment are the (biological) scientific issues associated with rewilding. As will be discussed in class, there are a number of non-scientific issues involved or implicated in rewilding, all ultimately affecting the public acceptability of rewilding. Although these issues are important – indeed, critical – in this assignment you should focus on the biological science issues and questions. Details: You must enumerate at least two pros and at least two cons. Your answer should be no more than 500 well-chosen words, excluding references. Think carefully about how best to organize and structure your answer. Aim for high information density: say a lot, but say it succinctly. Recall Nietzche’s…arrow_forward
- Now draw a rough sketch of what the control data might look like if in addition to the specific binding, there was also a considerable amount of nonspecific binding (again using a normal dose/response curve) (do % total bound ligand vs concentration)arrow_forwardWhat are functions of cuboidal cells in the kidney? Select all that apply. Concentration of gases Dilution of chemicals Secretion of molecules Nutrition to tissues Support of tissues Absorption of moleculesarrow_forwardquestion1 In plants, epithelial tissue is only found as the outermost cell layer and acts as a barrier. In humans, epithelial tissue is found inside the body as well as on the surface. What function(s) does/do epithelial tissue carry out in humans? Select all that apply. Waste storage Filtration Oxygen transport Protection Diffusion Osmosis Absorptionarrow_forward
- What words best describes this organism? a. Unicellular/nonmotile Ob. unicellular/motile c. colonial/nonmotile d. colonial/motile e. multicelluar O f. siphonous g. none of thesearrow_forwardIdentify the phylum or class. a. Euglenophyta b. Dinoflagellata c. Bacillariophyceae d. Oomycetes e. Phaeophyceae O f. Myxomycota g. Xanthophyceae ○ h. Chrysophyceae i. Dictyosteliomycota O j. Rhodophyta Ok. Chlorophyceaens I. Charophyceaensarrow_forwardWhat is produced inside the indicated structure (Fucus). a. eggs O b. antheridia ○ c. sperm d. zygotes e. none of thesearrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College