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Question 11 (1 point) of the following, which type of molecule moves directly across a membrane...
Question 1 (1 point) Of the following, which type of molecule moves directly across a membrane...
Question 1 (1 point) Of the following, which type of molecule moves directly across a membrane at the slowest rate? Large polar molecules, such as glucose Proteins and other macromolecules Small, uncharged polar molecules, such as water lons, such as chloride (CI)
12. Rank the following molecules in their ability to freely diffuse across the membrane (from 1-...
12. Rank the following molecules in their ability to freely diffuse across the membrane (from 1- likely to 4- very unlikely) Large uncharged polar molecules, hydrophobic molecules, small uncharged polar molecules, ion.
Question 7 (1 point) Integral membrane proteins stay in membranes because of their small size, which...
Question 7 (1 point) Integral membrane proteins stay in membranes because of their small size, which does not allow them to pass through the membrane osmotic pressure from proteins outside the cell. the locations of their polar and non-polar amino acids. diffusion of proteins from the cytoplasm to the membrane.
QUESTION 4 Which of the following statements about the blood-brain-barrier (BBB) is NOT true? a. weaker...
QUESTION 4 Which of the following statements about the blood-brain-barrier (BBB) is NOT true? a. weaker near area posterma, pituitary & pineal glands Ob.composed of astrocytes and 'tight junctions c. large and electrically charged molecules pass out of the capillary easily d.small, uncharged molecules pass through the endothelial membrane e. glucose, amino acids, and fats are carried across the membrane by active transport
9. Some diseases result from defective transport across the membrane. For example, cystic fibrosis results when...
9. Some diseases result from defective transport across the membrane. For example, cystic fibrosis results when a chloride ion transporter does not function. Which of the following is affected when this transporter does NOT function? the electrical gradient of the cell neither the chloride gradient nor the electrical gradient of the cell the chloride concentration gradient both the chloride concentration gradient and the electrical gradient of the cell 10. Which way does the water move if the cell is in...
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...
1. Why do fats provide more energy per molecule than glucose? Explain your answer in terms...
1. Why do fats provide more energy per molecule than glucose? Explain your answer in terms of the electrons extracted during the process of cellular respiration. 2. A rare, frameshift genetic mutation can alter the structure of the Pyruvate Dehydrogenase Complex such that it no longer functions within the cell. Describe what parts of the process of cellular respiration would be impacted due to this non- functional enzyme. 3. The citric acid cycle functions to completely oxidize glucose in the...
Biochem help molecule c molecule d QUESTION 6 Absorption of drugs into the body is based...
Biochem help
molecule c molecule d QUESTION 6 Absorption of drugs into the body is based on multiple factors including ionization state, surface area of the stomach and intestines, and other physical properties of the drug. A novel drug contains a carboxylic acid functional group with a pKa value of 3.24.. Based on ionization states alone, would you predict that it is better absorbed (ie passes through a lipid membrane) in the stomach where the pH is about 2, or...
QUESTION 1 Which of the following options lists the stages in cellular respiration in the correct...
QUESTION 1 Which of the following options lists the stages in cellular respiration in the correct order? A. glycolysis, oxidative phosphorylation, pyruvate oxidation, and the citric acid cycle B glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation C. pyruvate oxidation, oxidative phosphorylation, glycolysis, and the citric acid cycle D. the citric acid cycle, oxidative phosphorylation, pyruvate oxidation, and glycolysis QUESTION 2 When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the glucose...
Questions 7-15 The molecule is ethane 71 2 O ACTIVITY 1.2.1 Biological Macromolecules in 3-D 7....
Questions 7-15 The molecule is ethane
71 2 O ACTIVITY 1.2.1 Biological Macromolecules in 3-D 7. Orient the two molecules so that portions of the mo lecules that would normally form intermolecular bonds lie next to each other. In this activity, you will build molecular models of biologically important molecules using ball-and-spring molecular model 1) What intermolecular forces help to hold these mo- building kits and then you will view these and other molecules lecules together! of interest using computer-generated...
Question 1 (1 point) Of the following, which type of molecule moves directly across a membrane at the slowest rate? Large polar molecules, such as glucose Proteins and other macromolecules Small, uncharged polar molecules, such as water lons, such as chloride (CI)
Question 7 (1 point) Integral membrane proteins stay in membranes because of their small size, which does not allow them to pass through the membrane osmotic pressure from proteins outside the cell. the locations of their polar and non-polar amino acids. diffusion of proteins from the cytoplasm to the membrane.
QUESTION 4 Which of the following statements about the blood-brain-barrier (BBB) is NOT true? a. weaker near area posterma, pituitary & pineal glands Ob.composed of astrocytes and 'tight junctions c. large and electrically charged molecules pass out of the capillary easily d.small, uncharged molecules pass through the endothelial membrane e. glucose, amino acids, and fats are carried across the membrane by active transport
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...
1. Why do fats provide more energy per molecule than glucose? Explain your answer in terms of the electrons extracted during the process of cellular respiration. 2. A rare, frameshift genetic mutation can alter the structure of the Pyruvate Dehydrogenase Complex such that it no longer functions within the cell. Describe what parts of the process of cellular respiration would be impacted due to this non- functional enzyme. 3. The citric acid cycle functions to completely oxidize glucose in the...
Biochem help
molecule c molecule d QUESTION 6 Absorption of drugs into the body is based on multiple factors including ionization state, surface area of the stomach and intestines, and other physical properties of the drug. A novel drug contains a carboxylic acid functional group with a pKa value of 3.24.. Based on ionization states alone, would you predict that it is better absorbed (ie passes through a lipid membrane) in the stomach where the pH is about 2, or...
QUESTION 1 Which of the following options lists the stages in cellular respiration in the correct order? A. glycolysis, oxidative phosphorylation, pyruvate oxidation, and the citric acid cycle B glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation C. pyruvate oxidation, oxidative phosphorylation, glycolysis, and the citric acid cycle D. the citric acid cycle, oxidative phosphorylation, pyruvate oxidation, and glycolysis QUESTION 2 When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the glucose...
Questions 7-15 The molecule is ethane
71 2 O ACTIVITY 1.2.1 Biological Macromolecules in 3-D 7. Orient the two molecules so that portions of the mo lecules that would normally form intermolecular bonds lie next to each other. In this activity, you will build molecular models of biologically important molecules using ball-and-spring molecular model 1) What intermolecular forces help to hold these mo- building kits and then you will view these and other molecules lecules together! of interest using computer-generated...
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