Cell Physiology: Introduction and Cell Theory
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Cell Physiology: Introduction and Cell Theory

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Questions and Answers

What are the three systems that perform all physiological functions?

Oxygen regulation, nutrient uptake, waste disposal

What is the function of the nucleolus in a cell?

Proteins responsible for rRNA

What is the role of exosomes in the cell?

Part of the secretory pathway where cellular cargo is delivered to the plasma membrane

What is the function of lysosomes in a cell?

<p>Low pH vesicle involved in degradation of nutrients, proteins, etc</p> Signup and view all the answers

How do cells solve the issue of molecules finding each other in packed environments?

<p>Compartmentalization (by membranes)</p> Signup and view all the answers

What is the role of guided signaling in cells?

<p>Guided signaling helps guide proteins to their specific destinations within the cell</p> Signup and view all the answers

What do lipid rafts represent in the membrane?

<p>Specialized regions where proteins can signal efficiently.</p> Signup and view all the answers

Which cells do not contain DNA?

<p>Mature red blood cells and the dead layer of skin cells.</p> Signup and view all the answers

What is the main energy source required for the production of RNA and proteins?

<p>ATP</p> Signup and view all the answers

How do cells signal propagation through phosphorylation?

<p>Through phosphorylation</p> Signup and view all the answers

What do specific phospholipids in the plasma membrane tell the immune system?

<p>Whether the cell is healthy or not.</p> Signup and view all the answers

What does the structure of a cell indicate?

<p>The type of cell it will be, whether it's moving or stationary.</p> Signup and view all the answers

What is the variability observed between fibroblast and epithelial cells?

<p>Cell shape</p> Signup and view all the answers

What causes runners to feel more energy after 2 weeks?

<p>The increased number of mitochondria after 2 weeks.</p> Signup and view all the answers

What is the cellular memory within cells related to?

<p>Ancestry and differentiation into different tissues</p> Signup and view all the answers

What happens to cells that metastasize when they move to different locations?

<p>They revert back to their previous cell type.</p> Signup and view all the answers

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