Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN: 9781305117396
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 9SQ
Ions or molecules tend to diffuse from a region where
they are _______ (more/less) concentrated to another where
they are _______ (more/less) concentrated.
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Ions will flow _________ a concentration gradient.
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Chapter 4 Solutions
Biology Today and Tomorrow without Physiology (MindTap Course List)
Ch. 4 - Figure 4.5 Energy inputs and outputs in chemical...Ch. 4 - Figure 4.10 Enzymes, temperature, and pH. Each...Ch. 4 - Prob. 3FIOCh. 4 - Prob. 4FIOCh. 4 - The genus Ferroplasma consists of a few species of...Ch. 4 - Prob. 2DIDCh. 4 - Prob. 3DIDCh. 4 - Prob. 1SQCh. 4 - Prob. 2SQCh. 4 - Prob. 3SQ
Ch. 4 - Prob. 4SQCh. 4 - Prob. 5SQCh. 4 - Prob. 6SQCh. 4 - Prob. 7SQCh. 4 - Prob. 8SQCh. 4 - Ions or molecules tend to diffuse from a region...Ch. 4 - Prob. 10SQCh. 4 - Prob. 11SQCh. 4 - Prob. 12SQCh. 4 - A transport protein requires ATP to pump sodium...Ch. 4 - Prob. 14SQCh. 4 - Prob. 15SQCh. 4 - Prob. 1CTCh. 4 - Water molecules tend to diffuse in response to...Ch. 4 - Dixie Bee wanted to make JELL-O shots for her next...Ch. 4 - The enzyme trypsin is sold as a dietary enzyme...Ch. 4 - Prob. 5CT
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- The negative logarithm of the hydrogen ion concentration of an aqueous solution defines the of that solution. (answer case-sensitive) none of the above basic alkaline O pHarrow_forwardWhich of the following positively-charged ions is about 15 times more concentrated outside of the cell than inside (useful for the action potential of a neuron)? chloride bicarbonate calcium magnesium sodiumarrow_forwardHow is a mixture of ions separated using qualitative analysis? Group of answer choices Electrolysis of ions by variable voltage. Selective precipitation under acidic/basic conditions and electrolysis of ions by variable voltage. Selective precipitation under acidic/basic conditions. Selective precipitation under acidic/basic conditions and formation of complex ions. Selective precipitation under acidic conditions. Selective precipitation under acidic/basic conditions, formation of complex ions and electrolysis of ions by variable voltage. Formation of complex ions. Selective precipitation under basic conditions.arrow_forward
- Buffers are mixtures of a weak acid and a weak base that combine with a strong acid or base to limit changes in pH. True O Falsearrow_forwardAn isotonic solution containing CHO and sodium will be absorbed more readily than water alone. Group of answer choices True Falsearrow_forwardThe turn tonicity Refers to the strength of solutions. True or false?arrow_forward
- When the concentration of H+ ions in a solution decreases, a buffer maintains the pH of a solution by?arrow_forwardWhy do electrolytes require a decreased concentration of solutes in order to reach the isosmotic threshold? Why are these concentrations not the same for all electrolytes?arrow_forwardSolutes tend to diffuse from a region where they are _______ more/less concentrated to an adjacent region where they are ________ more/less concentrated.arrow_forward
- Using a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution? a. weakly acidic b. strongly acidic c. weakly basic d. strongly basicarrow_forwardWhen dissolved in water, an _________ donates H+; an ________ accepts H+. a. acid; base c. buffer; solute b. base; acid d. base; bufferarrow_forwardA student nypotneSizes that the solute concentration of grape juice is nigner than the solute concentration the actual grape because the grape juice has added sugar. Based on the data in Table 1, which of the following best evaluates the student's hypothesis? TABLE 1. PERCENT CHANGE IN MASS OF PEELED GRAPES IN SOLUTIONS Concentration of Solution Solution Percent Change in Mass (weight/volume) Distilled water 0% 13.48% NaCI 20% -23.39% Tap water 0.8% 9.46% Grape juice 2.1% 2.8% Grape soda 13% -15.00% The hypothesis is supported because the mass of the grape decreased in the grape juice. The hypothesis is not supported because the mass of the grape increased in the grape juice. The hypothesis is not supported because the grape was isotonic to the grape juice. The hypothesis is supported because the grape juice has a greater solute potential than the grape has. O O Oarrow_forward
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