1- The cell membrane is considered semipermeable because: a) It allows the passage of all substances b) It allows the passage of only water c) It allows the passage of some substances while restricting others d) It does not allow the passage of any substances 2- The lipid layer of the cell membrane is mainly composed of: a) Proteins b) Carbohydrates c) Phospholipids d) Cholesterol 3- Integral proteins in the cell membrane: a) Are loosely bound and easily dissociate from the membrane b) pass through the entire thickness of the cell membrane c) Are responsible for the attachment of cells to their neighbors d) Serve as receptor sites for hormones and neurotransmitters

Q: 7) Which is the best definition of osmosis? a) movement of molecules from an area of their higher…

A: Diffusion is a process by which molecules or substances move from a higher concentration to a lower…

Q: The primary structure of a protein is formed in the A) the RER, B) Golgi apparatus, C) nucleoid, D)…

A: Protein is a polymer of amino acids. The peptide bond is present between two amino acids.

Q: 1) All of the following are functions of proteins within a membrane except __________.…

A: Membrane biology, which has implications for the study of cellular physiology, is the research of…

Q: What membrane component is represented by C in the diagram? MASAAN NAMMANS AMHAMASIN FOOD HEADBOARD…

A: Introduction  A membrane is a thin, selectively permeable layer of material that separates two…

Q: You Are Examing A Protien That Is Secreted By White Blood Cells.What Is The Most Likely Route This…

A: Secretory proteins are always secreted out of the cells and include hormones, enzymes, toxins,…

Q: Water moves molecules passively across a cell membrane by: a)osmosis

A:

Q: Which of the following can attach to the cytoskeleton? a) A membrane protein b) A motor protein…

A: The cytoskeleton is a network of protein filaments and tubules found in the cytoplasm of cells. It…

Q: made

A: Ribosomes: These are the organelles found in all cells consists of RNA and protein and is also known…

Q: Match the definitions with the words: Direct Diffusion, Facilitated Transport, Active Transport a)…

A: The one primary distinction between faciliated and active transport  active transport needs energy,…

Q: d) hypertonic

A:

Q: Cell Membranes are: A)Fully permeable B)Impereable to all solutes c) Impereable to 50% of any…

A: Cells are the primary units of existence that make up all dwelling matters. Cells, much like the…

Q: The binding of inositol 1,4,5-trisphosphate (IP3) to the IP3 receptor results in the release of from…

A: Inositol 1,4,5-trisphosphate (IP3) is a second messenger molecule that acts as a ligand for the IP3…

Q: Cell motility involves the coordination of many events in the cell. In cells lacking flagella/cilia,…

A: The cytoskeleton is a complex network of protein filaments located in the cytoplasm of the cells. It…

Q: APC degrades securin, which allows _________ to become active and degrades the cohesion rings. a)…

A: Introduction Antigen-presenting cell (APC) is a type of immune cell that detects, engulfs, and…

Q: Which structure is circled in the picture? A) mitral B) bicuspid C) atrial D) tricuspid

A: Heart is the main organ of the circulatory system. In vertebrates it is located on the ventral side…

Q: Osmosis, the diffusion of water is distinct from the diffusion of oxygen because a) oxygen is a…

A: Osmosis, the diffusion of water is distinct from the diffusion of oxygen because?

Q: mitosis

A:

Q: sis  A) True B) Housekeeping gene

A: Answer  Housekeeping gene are genes which maintain homeostasis. These genes function to maintain…

Q: Diffusion means that a)  smaller particles move across the membrane faster. b)  all particles…

A: The movement of particles from an area of higher concentration to an area of lower concentration…

Q: Our cells need glucose for energy. When blood glucose is low, glucose must still be moved into our…

A: Transportation is a necessary, natural, and physiological activity that happens in all higher…

Q: Which statement is true according to the fluid mosaic model of cell membranes? a) Proteins are…

A: The correct answer is -D  Fluid's Mosaic Model: According to this theory, the plasma membranes of…

Q: The plasma membrane is made of: a) protein b) phospholipid c) nucleic acid d) carbohydrate e)…

A: The cell membrane (also known as the plasma membrane, or cytoplasmic membrane, and historically…

Q: Which describes the activities of a cell that include cell growth and cell division? a) Chromatin b)…

A: The living, self-reproducing, structural and functional unit of all living organisms is called cell.…

Q: Which of the following statements best describes the synthesis of secreted proteins? a.) Secreted…

A: Secreted proteins are those proteins that gets secreted out of the cell.

Q: the extracellular matrix is not composed of  a)Actin b)Fibronectin c)collagen d)proctoglyean

A: Extracellular matrix is a network of extracellular macromolecules and minerals such as collagen,…

Q: Joins the intermediate filaments in one cell to those of a neighboring cell a) Adheren Junctions…

A: Cell is an elemental unit of the body and is basic structural body organization in which numerous…

Q: If a scientist drops an animal cell into a solution that contains 10 times more salt than is found…

A: A solution is made up of solute plus solvent . Solution can be :- A ) Hypertonic  B ) Hypotonic  C )…

Q: 3. As the radius of a cell increases, which statement is true? Sphere surface area = A=4πr2 Sphere…

A: If the radius of cell is been increased to 3x, then its surface area will be increased to 9x and…

Q: Which of the following are the common features for both adenylate cyclase and guanylyl cyclase? a)…

A: Proteins that function as biological catalysts are known as enzymes. Catalysts help to speed up…

Q: Which of the below statements correctly describes the extracellular matrix? a)A layer that…

A: Introduction :- The extracellular matrix (ECM) is a three-dimensional network of extracellular…

Q: Receptor mediated endocytosis requires the presence of a) primary active transport pumps. D) carrier…

A: Introduction Endocytosis is the formation of an intracellular membrane-bounded vesicle containing…

Q: The smooth endoplasmic reticulum is responsible for a) bringing substances into the cell. b) fusing…

A: The endoplasmic reticulum (ER) is a large, dynamic structure in the cell that performs numerous…

Q: Many eukaryote cells are NOT able to synthesize (make their own) the amino acids that they require…

A: The cell membrane is selectively permeable. It allows only certain materials to pass through it.…

Q: Typically, our cells have a high concentration of sodium ions outside and a low concentration of…

A: There are many proteins present in the cell membrane to transport substances across the cell…

Q: Imagine you are working in a lab and you examine an unknown cell only to discover it gap junctions…

A: Introduction :- Gap junctions are membrane channels that mediate the movements of ions and small…

Q: Joins an actin bundle in one cell to a similar bundle in a neighboring cell a)Desmosomes b)Tight…

A: The cells junctions are the the connecting links between cells or cell and matrix. These provide…

Q: A cell contains 97% water and it is placed in a 5% salt solution. a) Which contains a higher…

A: Cell membrane The membrane of cell which is made up of phosphate and lipids. This membrane also…

Q: Which of the following statements about cell membranes is NOT true? A) Membranes are sheet like…

A: Introduction  The plasma membrane is the outermost, envelope-like membrane or structure that…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.