Homework Answers
Symporter is an integral membrane protein that transport 2 substances in the same direction. So, option a is correct. Symporters works as indirect active transport and thus one molecule is moving in favourable conditions while other is moving against the concentration gradient.
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Symporters are membrane imbedded proteins that A move 2 substances in the same direction move materials...
Exocytosis is a type of cellular transport that allows materials to move across the plasma membrane...
Exocytosis is a type of cellular transport that allows materials to move across the plasma membrane of a cell. Which of the statements describe properties of exocytosis? Exocytosis uses membrane channel proteins to import materials into the cell. Exocytosis is the primary method of transporting large molecules out of the cell. Exocytosis is the primary method of transporting large molecules into the cell. Exocytosis engulfs materials into the cell through the pinching off of a vesicle from the plasma membrane....
34. Which of the following membrane-enclosed organelles is the site of synthesis of membrane proteins and secretory proteins?
34. Which of the following membrane-enclosed organelles is the site of synthesis of membrane proteins and secretory proteins? a) rough endoplasmic reticulum b) smooth endoplasmic reticulum c) nucleus d) centrosome e) Golgi complex 35. Which of the following membrane-enclosed organelles modifies, s destined for other regions of the cell? sorts, and packages proteins a) endoplasmic reticulum b) Golgi complex c) peroxisomes d) nucleus e) proteasome 36. Which of the following membrane-enclosed organelles contains several oxidases that are involved in oxidation of fatty acids and...
What is the difference between a nuclear envelope and a plasma membrane? A nuclear envelope is...
What is the difference between a nuclear envelope and a plasma membrane? A nuclear envelope is made of two membranes, while the plasma membrane is a single membrane. A nuclear envelope does not contain membrane proteins, while the plasma membrane contains membrane proteins. There is no difference between a nuclear envelope and a plasma membrane A nuclear envelope allows water and gases to pass freely, while the plasma membrane does not. Which of the following is not a membrane-bound organelle?...
Special channels called aquaporins allow water to move between cells. These channel proteins are selective- they...
Special channels called aquaporins allow water to move between cells. These channel proteins are selective- they freely let water molecules through the membrane but NOT ions or other molecules- but (like leak channels) are not gated.Based on those facts, state which of the following would be the most likely to determines the direction (and how quickly) water can move across a membrane using aquaporins, and (in a few sentences) explain your answer. how much ATP is present inside the cell...
A&P Flix Activity: Membrane Transport Substances can move across the plasma membrane in two different ways-actively...
A&P Flix Activity: Membrane Transport Substances can move across the plasma membrane in two different ways-actively or passively. This activity will help you determine whether transport mech! Sort the following types of membrane transport mechanisms into active or passive processes. View Available Hint(s) Reset Help Endocytonio Dumoals Secondary active transport Exocvent Facilitated dimson Simple damunten Primary active transport Active Process Passive Process Submit Type here to search API Spr google.com 1 Chapter 1 - 3 Flix Activity: Membrane Transport High...
7. The cell membrane has tiny holes in it that allow materials to pass into and...
7. The cell membrane has tiny holes in it that allow materials to pass into and out of the cell. Skill Challenge Skills: diagramming, using models, applying concepts Each symbol on the diagram below represents either a substance needed or not needed by the cell. These substances pass into or out of the cell by diffusion, using passive transport, Substances moving into the cell are needed by the cell, and substances moving out of the cell are not needed by...
Chapter 4: A Tour of the Cell 3. A cell's plasma membrane is described as being...
Chapter 4: A Tour of the Cell 3. A cell's plasma membrane is described as being a because it is composed of a variety of molecules that are constantly in motion around each other. 4. Figure 4.4b on pg. 60 of your textbook indicates that membrane proteins will have both hydro- philic and hydrophobic regions. Briefly explain why a membrane protein would need both regions. Refer to the figure to aid you in answering the question. Chapter Content: The Nucleus...
1. Final modification of proteins and lipids Golgi body lov Ribosomes 2. Control of substances moving...
1. Final modification of proteins and lipids Golgi body lov Ribosomes 2. Control of substances moving into and out of cell. Rough ER 3. Translate the messages in mRNA into proteins. Nucleolus 4. Proteins made here are often exported out of the cell. Plasma membrane < 5. Site of vesicle formation and synthesis of lipids occurs here. Smooth ER 6. Assemble ribosomal (rRNA) subunits.
SDS-PAGE is often used to determine the location and orientation of membrane associated proteins. Commonly, experimental...
SDS-PAGE is often used to determine the location and orientation of membrane associated proteins. Commonly, experimental preparations of membranes are treated in a variety of ways in order to extract the proteins, which are then subjected to SDS-PAGE. These treatments will affect membrane proteins in different ways, based on how they are arranged in the membrane. One of the most common pre-treatments is by the digestive enzyme trypsin, which degrades polypeptide chains. Trypsin is too large to cross a membrane,...
21. Which property has not been observed for membrane proteins? a. energy storage b. transport of...
21. Which property has not been observed for membrane proteins? a. energy storage b. transport of substances into and out of the cell catalysis (enzymatic activity) acting as a receptor c. d. 22. In the fluid mosaic model of membrane structure the proteins are specifically bonded to the lipids b. a. the proteins "float" in the lipid bilayer the proteins are sandwiched between the lipid molecules c. d. the lipids are sandwiched between the protein molecules 23. All steroids contain...
Exocytosis is a type of cellular transport that allows materials to move across the plasma membrane of a cell. Which of the statements describe properties of exocytosis? Exocytosis uses membrane channel proteins to import materials into the cell. Exocytosis is the primary method of transporting large molecules out of the cell. Exocytosis is the primary method of transporting large molecules into the cell. Exocytosis engulfs materials into the cell through the pinching off of a vesicle from the plasma membrane....
What is the difference between a nuclear envelope and a plasma membrane? A nuclear envelope is made of two membranes, while the plasma membrane is a single membrane. A nuclear envelope does not contain membrane proteins, while the plasma membrane contains membrane proteins. There is no difference between a nuclear envelope and a plasma membrane A nuclear envelope allows water and gases to pass freely, while the plasma membrane does not. Which of the following is not a membrane-bound organelle?...
A&P Flix Activity: Membrane Transport Substances can move across the plasma membrane in two different ways-actively or passively. This activity will help you determine whether transport mech! Sort the following types of membrane transport mechanisms into active or passive processes. View Available Hint(s) Reset Help Endocytonio Dumoals Secondary active transport Exocvent Facilitated dimson Simple damunten Primary active transport Active Process Passive Process Submit Type here to search API Spr google.com 1 Chapter 1 - 3 Flix Activity: Membrane Transport High...
7. The cell membrane has tiny holes in it that allow materials to pass into and out of the cell. Skill Challenge Skills: diagramming, using models, applying concepts Each symbol on the diagram below represents either a substance needed or not needed by the cell. These substances pass into or out of the cell by diffusion, using passive transport, Substances moving into the cell are needed by the cell, and substances moving out of the cell are not needed by...
Chapter 4: A Tour of the Cell 3. A cell's plasma membrane is described as being a because it is composed of a variety of molecules that are constantly in motion around each other. 4. Figure 4.4b on pg. 60 of your textbook indicates that membrane proteins will have both hydro- philic and hydrophobic regions. Briefly explain why a membrane protein would need both regions. Refer to the figure to aid you in answering the question. Chapter Content: The Nucleus...
1. Final modification of proteins and lipids Golgi body lov Ribosomes 2. Control of substances moving into and out of cell. Rough ER 3. Translate the messages in mRNA into proteins. Nucleolus 4. Proteins made here are often exported out of the cell. Plasma membrane < 5. Site of vesicle formation and synthesis of lipids occurs here. Smooth ER 6. Assemble ribosomal (rRNA) subunits.
SDS-PAGE is often used to determine the location and orientation of membrane associated proteins. Commonly, experimental preparations of membranes are treated in a variety of ways in order to extract the proteins, which are then subjected to SDS-PAGE. These treatments will affect membrane proteins in different ways, based on how they are arranged in the membrane. One of the most common pre-treatments is by the digestive enzyme trypsin, which degrades polypeptide chains. Trypsin is too large to cross a membrane,...
21. Which property has not been observed for membrane proteins? a. energy storage b. transport of substances into and out of the cell catalysis (enzymatic activity) acting as a receptor c. d. 22. In the fluid mosaic model of membrane structure the proteins are specifically bonded to the lipids b. a. the proteins "float" in the lipid bilayer the proteins are sandwiched between the lipid molecules c. d. the lipids are sandwiched between the protein molecules 23. All steroids contain...
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