Concept explainers
Introduction:
Cells are regarded as the simplest unit (structural and functional) of life. Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. The nucleus is bound by a nuclear membrane, and it possesses the genetic material of the cell. Cytoplasm consists of organelles, cytoskeleton (filaments and tubules), and inclusion bodies. Cellular membrane, which surrounds the entire cell, is composed of phospholipids and proteins. The plasma membrane is amphipathic, which indicates the presence of both hydrophilic (polar) and hydrophobic (non-polar) groups. Protoplasm denotes all living material that are present in the cell enclosed by the cellular membrane (inside and outside the nucleus).
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- Why is it advantageous for the cell membrane to be fluid in nature?arrow_forwardWhich plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein b. cholesterol c. carbohydrate d. phospholipidarrow_forwardwhat purpose does the plasma membrane’s hydrophobic interior serve?arrow_forward
- What enzymes are responsible for distributing phospholipids in the correct side of the membrane?arrow_forwardWhat are the types of transmembrane proteins that allow for the movement of substances across biological membranes?arrow_forwardWhat explains the very slow movement of membrane phospholipids from one leaflet of a biological membrane to the other?arrow_forward
- What is the main function of the phospholipid bilayer?arrow_forwardWhat is the function of Integral membrane proteins?arrow_forwardHow do we know that membrane phospholipids regularly intermingle and move laterally, but rarely flip from one side of the phospholipid bilayer to the other?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College