Biochemical Building Blocks
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Questions and Answers

Which of the following is a biological macromolecule?

  • Water
  • Oxygen
  • Glucose (correct)
  • Carbon dioxide

How is homeostasis defined in human physiology?

  • The ability of the body to adapt to external changes
  • The ability of the body to maintain a stable internal environment (correct)
  • The ability of the body to produce energy
  • The ability of the body to repair damaged cells

What is one of the most important aspects of homeostasis?

  • Regulation of body temperature (correct)
  • Regulation of oxygen levels
  • Regulation of blood pressure
  • Regulation of blood glucose levels

What is the role of the pancreas in homeostasis?

<p>Producing insulin and glucagon (A)</p> Signup and view all the answers

What is the function of the cell membrane?

<p>Separating the interior of the cell from the outside environment (B)</p> Signup and view all the answers

Which of the following is true about the lipid bilayer of the cell membrane?

<p>It is selectively permeable (D)</p> Signup and view all the answers

What is the function of integral proteins in the cell membrane?

<p>Transport of molecules across the membrane (D)</p> Signup and view all the answers

What is the role of peripheral proteins in the cell membrane?

<p>Cell signaling and communication (B)</p> Signup and view all the answers

Which component of the cell membrane is important for cell recognition and adhesion?

<p>Carbohydrates (B)</p> Signup and view all the answers

What is the overall role of the cell membrane?

<p>To regulate the movement of molecules in and out of the cell (C)</p> Signup and view all the answers

What are biological macromolecules and what are they built from?

<p>Biological macromolecules are large molecules necessary for life. They are built from different combinations of smaller organic molecules called monomers.</p> Signup and view all the answers

What is homeostasis and why is it important in human physiology?

<p>Homeostasis is the ability of the body to maintain a stable internal environment despite external changes. It is important because deviations from the stable environment can have significant physiological consequences.</p> Signup and view all the answers

How does the body regulate body temperature?

<p>The body regulates body temperature through mechanisms such as sweating, shivering, and changes in blood flow to the skin.</p> Signup and view all the answers

What is the role of the pancreas in regulating blood glucose levels?

<p>The pancreas produces insulin and glucagon, which help to maintain a stable blood glucose concentration.</p> Signup and view all the answers

What is the function of the cell membrane?

<p>The cell membrane separates the interior of the cell from the outside environment.</p> Signup and view all the answers

What is the structure of the cell membrane?

<p>The cell membrane is composed of a lipid bilayer made up of two layers of phospholipid molecules.</p> Signup and view all the answers

What is the function of the lipid bilayer in the cell membrane?

<p>The lipid bilayer acts as a barrier, selectively allowing certain molecules to pass through while blocking others.</p> Signup and view all the answers

What are integral proteins and where are they located?

<p>Integral proteins are embedded deep within the membrane and are responsible for transporting molecules across the membrane.</p> Signup and view all the answers

What are peripheral proteins and where are they located?

<p>Peripheral proteins are found on the surface of the membrane and are involved in cell signaling and communication.</p> Signup and view all the answers

What other components are present in the cell membrane?

<p>The cell membrane also contains carbohydrates and cholesterol. Carbohydrates are important for cell recognition and adhesion, while cholesterol helps maintain the fluidity and stability of the membrane.</p> Signup and view all the answers

What is the composition of the cell membrane?

<p>The cell membrane is composed of a lipid bilayer.</p> Signup and view all the answers

What is the function of the lipid bilayer in the cell membrane?

<p>The lipid bilayer forms a barrier around the cell and is selectively permeable, allowing certain molecules to pass through while blocking others.</p> Signup and view all the answers

What are integral proteins and where are they located?

<p>Integral proteins are embedded deep within the membrane and are responsible for transport of molecules across the membrane.</p> Signup and view all the answers

What are peripheral proteins and where are they located?

<p>Peripheral proteins are found on the surface of the membrane and are involved in cell signaling and communication.</p> Signup and view all the answers

What are the other components present in the cell membrane?

<p>The cell membrane also contains carbohydrates and cholesterol. Carbohydrates are important for cell recognition and adhesion, while cholesterol helps to maintain the fluidity and stability of the membrane.</p> Signup and view all the answers

What is the main function of the cell membrane?

<p>The main function of the cell membrane is to separate the interior of the cell from the outside environment and regulate the movement of molecules in and out of the cell.</p> Signup and view all the answers

What is the composition of the lipid bilayer?

<p>The lipid bilayer is composed of two layers of phospholipid molecules.</p> Signup and view all the answers

What is the role of integral proteins in the cell membrane?

<p>Integral proteins are responsible for transporting molecules across the membrane.</p> Signup and view all the answers

What are peripheral proteins and where are they located?

<p>Peripheral proteins are located on the surface of the cell membrane and are involved in cell signaling and communication.</p> Signup and view all the answers

What is the role of cholesterol in the cell membrane?

<p>Cholesterol helps to maintain the fluidity and stability of the cell membrane.</p> Signup and view all the answers

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