COPY: Molecular and Cellular Bases Pt 1 Quiz

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What is the function of ions in cellular mechanisms?

To transmit electrochemical impulses in nerve and muscle cells (correct)

To provide energy for cellular reactions

To catalyze biochemical reactions

To store genetic information

What is the main component of most cells?

Proteins

Water (correct)

Lipids

Carbohydrates

What is the function of proteins in cells?

To mediate physiological changes (correct)

To store energy

To regulate gene expression

To provide structural support

What is the main function of carbohydrates in cells?

To be used as an energy source Signup and view all the answers

What is unique about the composition of fat cells (adipocytes)?

They have a high lipid composition Signup and view all the answers

Where can chemical reactions involving water take place within a cell?

Both c and d Signup and view all the answers

What is the primary function of cholesterol in the cell membrane?

Regulating membrane fluidity and permeability Signup and view all the answers

What type of protein is typically responsible for transporting molecules across the cell membrane?

Integral proteins Signup and view all the answers

Which lipids are found in high quantities within the cell membrane?

Phospholipids Signup and view all the answers

What is the primary function of peripheral proteins in the cell membrane?

Controlling enzymatic activities Signup and view all the answers

Which of the following is a primary function of the cell membrane?

Organizing biochemical reactions Signup and view all the answers

What is the primary function of cholesterol in the cell membrane?

To enhance the barrier properties of the lipid bilayer Signup and view all the answers

What is the main difference in ion distribution between the ICF and ECF?

ICF has more potassium and ECF has more sodium Signup and view all the answers

Which organelle is described as being "a netlike labyrinth of branching tubules and flattened sacs that extends throughout the cytosol"?

Endoplasmic Reticulum Signup and view all the answers

Adipocytes are composed of triglycerides. What is the function of adipocytes?

To store lipids Signup and view all the answers

What is the term for the voltage difference caused by the uneven distribution of ions on opposite sides of the cell membrane?

Membrane potential Signup and view all the answers

What is the characteristic of lipids that allows them to play a key role in the cell’s membrane-bound organelles?

They are non-polar molecules Signup and view all the answers

Which organelle is responsible for breaking down hydrogen peroxide?

Peroxisomes Signup and view all the answers

What is the role of phospholipids in the cell membrane?

To form the lipid bilayer Signup and view all the answers

Which organelle is involved in the process of bile acid synthesis?

Peroxisomes Signup and view all the answers

What is the primary mechanism by which mitochondria generate energy for the cell?

Oxidative phosphorylation Signup and view all the answers

What is the difference between the cytosol and cytoplasm?

Cytosol is the fluid composition, while cytoplasm is the space between the cell membrane and nucleus Signup and view all the answers

What is the primary function of lysosomes in cellular activity?

Intracellular digestion Signup and view all the answers

What is the primary function of the smooth endoplasmic reticulum?

Lipid synthesis Signup and view all the answers

What type of cytoskeleton is actin?

Microfilament Signup and view all the answers

What is the function of the rough endoplasmic reticulum?

Protein synthesis Signup and view all the answers

Which organelle is described as being a "collection of flattened, membrane-enclosed compartments called cisternae"?

Golgi Apparatus Signup and view all the answers

What is the function of the membrane potential?

All of the above Signup and view all the answers

What is the function of the ER in terms of intracellular calcium storage?

It stores calcium ions to be used in signaling pathways Signup and view all the answers

What is the relationship between the ER and the Golgi apparatus?

Vesicles from the ER fuse with the Golgi apparatus Signup and view all the answers

What is the primary function of the golgi apparatus in cellular activity?

Process and form lysosomes and secretory vesicles Signup and view all the answers

COPY: Molecular and Cellular Bases Pt 1 Quiz

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Questions and Answers

What is the function of ions in cellular mechanisms?

What is the main component of most cells?

What is the function of proteins in cells?

What is the main function of carbohydrates in cells?

What is unique about the composition of fat cells (adipocytes)?

Where can chemical reactions involving water take place within a cell?

What is the primary function of cholesterol in the cell membrane?

What type of protein is typically responsible for transporting molecules across the cell membrane?

Which lipids are found in high quantities within the cell membrane?

What is the primary function of peripheral proteins in the cell membrane?

Which of the following is a primary function of the cell membrane?

What is the primary function of cholesterol in the cell membrane?

What is the main difference in ion distribution between the ICF and ECF?

Which organelle is described as being "a netlike labyrinth of branching tubules and flattened sacs that extends throughout the cytosol"?

Adipocytes are composed of triglycerides. What is the function of adipocytes?

What is the term for the voltage difference caused by the uneven distribution of ions on opposite sides of the cell membrane?

What is the characteristic of lipids that allows them to play a key role in the cell’s membrane-bound organelles?

Which organelle is responsible for breaking down hydrogen peroxide?

What is the role of phospholipids in the cell membrane?

Which organelle is involved in the process of bile acid synthesis?

What is the primary mechanism by which mitochondria generate energy for the cell?

What is the difference between the cytosol and cytoplasm?

What is the primary function of lysosomes in cellular activity?

What is the primary function of the smooth endoplasmic reticulum?

What type of cytoskeleton is actin?

What is the function of the rough endoplasmic reticulum?

Which organelle is described as being a "collection of flattened, membrane-enclosed compartments called cisternae"?

What is the function of the membrane potential?

What is the function of the ER in terms of intracellular calcium storage?

What is the relationship between the ER and the Golgi apparatus?

What is the primary function of the golgi apparatus in cellular activity?

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