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Test Bank, Question 11.58 Incorrect. Some molecules and ions are transported across a membrane viawhich requires...
Your answer is incorrect. Try again. Membranes contain lipids: O that contain saturated fatty acid residues....
Your answer is incorrect. Try again. Membranes contain lipids: O that contain saturated fatty acid residues. O which can affect the rigidity of the membrane. O with hydrophilic heads oriented to the interior of the membrane. o with hydrophobic tails oriented at the surface of the membrane. Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT x Your answer is incorrect. Try again. A protein moves an amino acid across a membrane...
A correct distinction between facilitated diffusion and active transport of a substance across a biological membrane...
A correct distinction between facilitated diffusion and active transport of a substance across a biological membrane is that . . . A. active transport requires conformational changes in the transport protein associated with the transport process, and facillitated diffusion does not. B. active transport requires integral membrane protein to carry out the transport, and facillitated diffusion does not. C. facilitated diffusion depends on an existing energy gradient acting on the transported substance, while active transport makes such a gradient. D....
The majority of water molecules moving across plasma membranes by osmosis do so via a process...
The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to _______ facilitated diffusion cotransport simple diffusion active transport a process that requires energy from the cell
Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Classify...
Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Classify the molecules or ions depending on how they cross a biological membrane. Note that some of these examples may also utilize active transport to traverse a membrane. However, this question is limited to passive transport processes only. Simple Diffusion Facilitated Diffusion Answer Bank steroid hormones eroid hormones K r reting etinol N, glacene
Question 35 2 pts Energy is indirectly used to co-transport hydrogen ions and glucose sugar across...
Question 35 2 pts Energy is indirectly used to co-transport hydrogen ions and glucose sugar across the cell membrane, against the concentration gradient of the glucose. This scenario describes facilitated diffusion. secondary active transport. simple diffusion. primary active transport. - Previous Next →
21. The fluid in blood vessels and the Interstitial space is referred to as: a. The...
21. The fluid in blood vessels and the Interstitial space is referred to as: a. The extracellular fluid compartment b. Plasma c. The Intracellular fluid compartment 22. Why is the resting cell membrane more permeable to K+ than to Na+? a. Because gated K+ channels are always open. b. Because K+ can diffuse through the phospholipid bilayer of the resting cell membrane and Na+ cannot. c. Because the cell membrane contains Leak (ungated) K+ Channels. 23. Lipid soluble molecules, carbon...
Lo 10: Electrochemical Gradient The difference in voltage across the membrane is called the __________________________________. The...
Lo 10: Electrochemical Gradient The difference in voltage across the membrane is called the __________________________________. The inside of a normal cell is ___________________ (+/-); while the outside is ___________(+/-). The resting membrane potential of a neuron is ___________mV. Diagram the relative ratios of Ca++, Na+ and K+ in a cell under resting conditions. Draw an arrow for each of the molecules indicating which direction would be passive transport (into or out of the cell). For each of the following sentences, fill in...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
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...
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+...
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+ Cl- H20 Na+ CO2 02 lipid Question 4 Which is(are) true about transport across the membrane? Channels can perform either active or passive transport Charged molecules move according to their electrochemical gradients Movement of an ion down its gradient requires energy Transporters are faster but less selective than channels Question 6 In the coupled transport of Na+ and glucose, the transporter O is an...
Your answer is incorrect. Try again. Membranes contain lipids: O that contain saturated fatty acid residues. O which can affect the rigidity of the membrane. O with hydrophilic heads oriented to the interior of the membrane. o with hydrophobic tails oriented at the surface of the membrane. Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT x Your answer is incorrect. Try again. A protein moves an amino acid across a membrane...
Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Classify the molecules or ions depending on how they cross a biological membrane. Note that some of these examples may also utilize active transport to traverse a membrane. However, this question is limited to passive transport processes only. Simple Diffusion Facilitated Diffusion Answer Bank steroid hormones eroid hormones K r reting etinol N, glacene
Question 35 2 pts Energy is indirectly used to co-transport hydrogen ions and glucose sugar across the cell membrane, against the concentration gradient of the glucose. This scenario describes facilitated diffusion. secondary active transport. simple diffusion. primary active transport. - Previous Next →
21. The fluid in blood vessels and the Interstitial space is referred to as: a. The extracellular fluid compartment b. Plasma c. The Intracellular fluid compartment 22. Why is the resting cell membrane more permeable to K+ than to Na+? a. Because gated K+ channels are always open. b. Because K+ can diffuse through the phospholipid bilayer of the resting cell membrane and Na+ cannot. c. Because the cell membrane contains Leak (ungated) K+ Channels. 23. Lipid soluble molecules, carbon...
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+ Cl- H20 Na+ CO2 02 lipid Question 4 Which is(are) true about transport across the membrane? Channels can perform either active or passive transport Charged molecules move according to their electrochemical gradients Movement of an ion down its gradient requires energy Transporters are faster but less selective than channels Question 6 In the coupled transport of Na+ and glucose, the transporter O is an...
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