Which of the following would not be facilitated diffusion? A. An amino acid exits the cell...
Homework Answers
Answer is option D - A water molecule passes through a semi-permeable membrane - which is actually osmosis. Facilitated diffusion requires a transmembrane integral protein for transport of molecule but osmosis only requires a semi-permeable membrane and movement is from region of higher concentration to region of lower concentration.
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Which of the following would not be facilitated
diffusion?
A. An amino acid exits the cell...
How does facilitated diffusion differ from simple diffusion? Facilitated diffusion requires ATP Facilitated diffusion requires a...
How does facilitated diffusion differ from simple diffusion? Facilitated diffusion requires ATP Facilitated diffusion requires a solute-specific protein carrier Facilitated diffusion transports solute against its’ concentration gradient Which of the following is TRUE about primary active cell membrane transport? It is a form of transport that requires a protein “pump” It is a form of transport that transports ions and/or solute against their concentration gradient It is a transport mechanism that requires energy released from the splitting of ATP by...
09. Which of the followine statements regarding channel proteins (shown below (shown below) is for propratic...
09. Which of the followine statements regarding channel proteins (shown below (shown below) is for propratic of all a. Channel proteins can assist polar molecules to cross the plasma membrane by facilitated diffusion b. The gated ion channel can allow ions to pass when stimulated to open. c. The surface of a channel protein in contact with the bilayer would likely have hydrophilic amino acids d. Water plays a role in determining which ions are allowed to pass through an...
cell biology Which of the following is an active transport mechanism? a Facilitated diffusion of potassium...
cell biology Which of the following is an active transport mechanism? a Facilitated diffusion of potassium ions across the membrane through an open potassium channel b Movement of water into a cell c Sodium ions moving out of an animal cell bathed in physiological saline d Movement of CO2 out of a cell e None of the above
Incorrect Question 3 0/2 pts Cell membranes act as selective barriers. Which of the following is...
Incorrect Question 3 0/2 pts Cell membranes act as selective barriers. Which of the following is best at crossing a pure lipid bilayer? amino acid such as tyrosine a sodium ion a gas such as oxygen an antibody a glucose molecule Incorrect 0/2 pts Question 5 A peripheral membrane protein is: is found outside the organism designates a protein that is in the plasma membrane versus mitochondrial membrane is only found in the blood may be associated with the membrane...
Fill in the following chart with the characteristics typical of 5 points Facilitated Diffusion * high...
Fill in the following chart with the characteristics typical of 5 points Facilitated Diffusion * high to small e either hydrophilic hydrophobic low Molecule Size (small/large/either) hydrophilic/hydrophobic/either high to low concentration on low to high concentration transport protein (yes/no) L energy required (yes/no) Fill in the following chart with the characteristics typical of 3 points prokaryotic cells* Small Large yes no Size (small or large) Cell membrane (yes or no) Membrane-bound organelles (yes or no Nucleus (yes or no
Please summarize this chapter typed clearly. Diffusion Is a passive process of transport. A single substance...
Please summarize this chapter
typed clearly.
Diffusion Is a passive process of transport. A single substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across a space. Facilitated transport Facilitated diffusion is the process of spontaneous passive transport of molecules or ions across a biological membrane via specific transmembrane integral proteins. Channels The integral proteins involved in facilitated transport are collectively referred to as transport proteins, and they...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
During the aerobic metabolism of glucose, glucose is ____________. Reduced to form water Oxidized to form...
During the aerobic metabolism of glucose, glucose is ____________. Reduced to form water Oxidized to form water Reduced to form CO2 Oxidized to form CO2 Which of the following describes the equation: FAD + XH2 à FADH2 + X. FAD is reduced to FADH2 It is a coupled reduction – oxidation reaction XH2 is oxidized to X All of the above Which of the following is FALSE about glycolysis? The initial steps of glycolysis requires energy derived from the splitting...
Let’s consider an electrical current through a single ion channel, as shown in the following figure. We start by treating an ion channel as a cylindrical pore through the cell membrane. The channel is...
Let’s consider an electrical current through a single ion channel, as shown in the following figure. We start by treating an ion channel as a cylindrical pore through the cell membrane. The channel is of length L ≈ 5 nm and is filled with water. The concentration difference of Na+ ions across the channel is Δc ≈ 100 mM. This concentration difference produces a flux of ions through the channel given by DΔc/L, where D is the diffusion constant for...
Part A What molecule would move through a biological membrane most rapidly by direct diffusion, and...
Part A What molecule would move through a biological membrane most rapidly by direct diffusion, and why? messenger RNA, because it is polar a deoxyribonucleotide, because it contains sugar units O carbon dioxide, because it is small and nonpolar O a large protein, because it can be embedded into the membrane Methionine, because it is an amino acid Submit Request Answer vide Feedback
09. Which of the followine statements regarding channel proteins (shown below (shown below) is for propratic of all a. Channel proteins can assist polar molecules to cross the plasma membrane by facilitated diffusion b. The gated ion channel can allow ions to pass when stimulated to open. c. The surface of a channel protein in contact with the bilayer would likely have hydrophilic amino acids d. Water plays a role in determining which ions are allowed to pass through an...
Incorrect Question 3 0/2 pts Cell membranes act as selective barriers. Which of the following is best at crossing a pure lipid bilayer? amino acid such as tyrosine a sodium ion a gas such as oxygen an antibody a glucose molecule Incorrect 0/2 pts Question 5 A peripheral membrane protein is: is found outside the organism designates a protein that is in the plasma membrane versus mitochondrial membrane is only found in the blood may be associated with the membrane...
Fill in the following chart with the characteristics typical of 5 points Facilitated Diffusion * high to small e either hydrophilic hydrophobic low Molecule Size (small/large/either) hydrophilic/hydrophobic/either high to low concentration on low to high concentration transport protein (yes/no) L energy required (yes/no) Fill in the following chart with the characteristics typical of 3 points prokaryotic cells* Small Large yes no Size (small or large) Cell membrane (yes or no) Membrane-bound organelles (yes or no Nucleus (yes or no
Please summarize this chapter
typed clearly.
Diffusion Is a passive process of transport. A single substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across a space. Facilitated transport Facilitated diffusion is the process of spontaneous passive transport of molecules or ions across a biological membrane via specific transmembrane integral proteins. Channels The integral proteins involved in facilitated transport are collectively referred to as transport proteins, and they...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
Part A What molecule would move through a biological membrane most rapidly by direct diffusion, and why? messenger RNA, because it is polar a deoxyribonucleotide, because it contains sugar units O carbon dioxide, because it is small and nonpolar O a large protein, because it can be embedded into the membrane Methionine, because it is an amino acid Submit Request Answer vide Feedback
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