![B. A solution with a pH of 9 is considered [Select] and has (Select] hydrogen ions compared to a solution with a pH of 4.](http://img.homeworklib.com/questions/c9b51540-e858-11ea-8097-cb60575dc56b.png?x-oss-process=image/resize,w_560)
Homework Answers
1. A. Plasma membrane made of lipids.
B. A solution with pH9 is considered as basic or alkaline solution and has 1/100 or 1×10-9 hydrogen ions compared with solution of pH4.
C. Polar covalent bond is present between hydrogen molecule and ions.
D. The water molecule as a whole have 10 protons and 10 electrons, so it is neutral. In a water molecule, the oxygen atom and hydrogen atoms share electrons in covalent bonds, but the sharing is not equal.
E. Partial covalent bonds are present within hydrogen molecules.
2. The statement regarding enzymes is true is :
Enzymes increase the rate of chemical reaction by lowering activation energy barriers.
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1.A Which of the following substances is made of lipids? enzymes O plasma membrane sugars O...
1.A Which of the following substances is made of lipids? enzymes O plasma membrane sugars O...
1.A Which of the following substances is made of lipids? enzymes O plasma membrane sugars O DNA
Which of the following statements about enzymes are true? Select all that apply: Enzymes increase reaction...
Which of the following statements about enzymes are true? Select all that apply: Enzymes increase reaction rates by lowering the energy of the products. Enzymes increase the rate at which products are created by preventing reactions from running backwards. Enzymes increase reaction rates by lowering the activation energy of a reaction. Enzymes increase reaction rates by interacting with the substrate molecules to facilitate the reaction, for example by contorting them to facilitate bond-breakage or orienting them to favor bond formation.
12) Which statement is NOT true? A) There are many different types of lipids. B) Lipids...
12) Which statement is NOT true? A) There are many different types of lipids. B) Lipids are found in cell membranes. C) Some hormones are lipids. D) Lipids are soluble in organic solvents. E) All lipids contain fatty acids. 13) The process of building up new molecules in the coll is called A) glycolysis. B) catabolism. C) anabolism. D) metabolism. E) transamination 14) Which of the following does not require energy from ATP hydrolysis? A) digestion B) synthesis of an...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not proteins Enzymes slow down the rate of chemical reactions. O An enzyme is very specific in terms of which substrates it can bind. O An enzyme is consumed by the catalytic process. Question 9 1 pts Which one of the following statements about energy is correct? O Entropy is the movement of molecules from areas of higher concentration to areas of lower concentration. O...
identify your answer. (2 pts ea) 12) Which statement is NOT true? A) There are many different types of lipids. B)...
identify your answer. (2 pts ea) 12) Which statement is NOT true? A) There are many different types of lipids. B) Lipids are found in cell membranes. C) Some hormones are lipids D) Lipids are soluble in organic solvents. E) All lipids contain fatty acids. 13) The process of building up new molecules in the coll is called A) glycolysis. B) catabolism. C) anabolism. D) metabolism E) transamination. 14) Which of the following does not require energy from ATP hydrolysis?...
the activation energy di the reaction with an enzyme. the progress of the reaction. All of...
the activation energy di the reaction with an enzyme. the progress of the reaction. All of the following statements regarding the figure are correct EXCEPT? Figure 2. Energy profile of a chemical reaction with and without an enzyme Free Energy Progress of reaction - Even with the addition of an enzyme, an input of energy is needed for the reaction to progress. Energy is released from the reaction with or without an enzyme Even with the addition of an enzyme,...
I have the need to complete the sentences. Thanks for your help < Energy and Enzymes...
I have the need to complete the sentences.
Thanks for your help
< Energy and Enzymes Building Vocabulary: Enzymes Part A Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help an enzyme, causing it to lose its shape and High temperatures or changes in pH can biological activity Enzymes speed up chemical reactions by lowering the proceed much more quickly An enzyme is considered a(n) used up activation energy induced...
15. Diffusion of water through a differentially permeable membrane is called A. active transport. B. energy....
15. Diffusion of water through a differentially permeable membrane is called A. active transport. B. energy. C. osmosis. D. All of these answers are true. 16. What happens when an animal cell is placed into a hypertonic solution? A. plasmolysis B. crenation occurs C. it swells D. it is unchanged 17. The point on the enzyme where the enzyme causes the substrate to change is called the A. attachment site. B. active site. C. binding site. D. enzyme-substrate complex 18....
Enzymes are important to biology because they can be used to Select one: O a. Control...
Enzymes are important to biology because they can be used to Select one: O a. Control when chemical reactions happen O b. Control where chemical reactions occur O c. Link different chemical reactions O d. Couple ATP hydrolysis to activity O e. All of the above Diffusion is the movement of solute propelled by collisions with water. Diffusion spontaneously transforms energy concentration gradients into energy equilibrium conditions just like any other spontaneous reaction. Select one: O a. high; high O...
1.A Which of the following substances is made of lipids? enzymes O plasma membrane sugars O DNA
12) Which statement is NOT true? A) There are many different types of lipids. B) Lipids are found in cell membranes. C) Some hormones are lipids. D) Lipids are soluble in organic solvents. E) All lipids contain fatty acids. 13) The process of building up new molecules in the coll is called A) glycolysis. B) catabolism. C) anabolism. D) metabolism. E) transamination 14) Which of the following does not require energy from ATP hydrolysis? A) digestion B) synthesis of an...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
Which of the following statements concerning enzymes is true and correct? O Most enzymes are not proteins Enzymes slow down the rate of chemical reactions. O An enzyme is very specific in terms of which substrates it can bind. O An enzyme is consumed by the catalytic process. Question 9 1 pts Which one of the following statements about energy is correct? O Entropy is the movement of molecules from areas of higher concentration to areas of lower concentration. O...
identify your answer. (2 pts ea) 12) Which statement is NOT true? A) There are many different types of lipids. B) Lipids are found in cell membranes. C) Some hormones are lipids D) Lipids are soluble in organic solvents. E) All lipids contain fatty acids. 13) The process of building up new molecules in the coll is called A) glycolysis. B) catabolism. C) anabolism. D) metabolism E) transamination. 14) Which of the following does not require energy from ATP hydrolysis?...
the activation energy di the reaction with an enzyme. the progress of the reaction. All of the following statements regarding the figure are correct EXCEPT? Figure 2. Energy profile of a chemical reaction with and without an enzyme Free Energy Progress of reaction - Even with the addition of an enzyme, an input of energy is needed for the reaction to progress. Energy is released from the reaction with or without an enzyme Even with the addition of an enzyme,...
I have the need to complete the sentences.
Thanks for your help
< Energy and Enzymes Building Vocabulary: Enzymes Part A Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help an enzyme, causing it to lose its shape and High temperatures or changes in pH can biological activity Enzymes speed up chemical reactions by lowering the proceed much more quickly An enzyme is considered a(n) used up activation energy induced...
15. Diffusion of water through a differentially permeable membrane is called A. active transport. B. energy. C. osmosis. D. All of these answers are true. 16. What happens when an animal cell is placed into a hypertonic solution? A. plasmolysis B. crenation occurs C. it swells D. it is unchanged 17. The point on the enzyme where the enzyme causes the substrate to change is called the A. attachment site. B. active site. C. binding site. D. enzyme-substrate complex 18....
Enzymes are important to biology because they can be used to Select one: O a. Control when chemical reactions happen O b. Control where chemical reactions occur O c. Link different chemical reactions O d. Couple ATP hydrolysis to activity O e. All of the above Diffusion is the movement of solute propelled by collisions with water. Diffusion spontaneously transforms energy concentration gradients into energy equilibrium conditions just like any other spontaneous reaction. Select one: O a. high; high O...
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