12 Questions
What is the main reason for the limited cell size in organisms?
To increase surface area for nutrient exchange
Which of the following is a major difference between prokaryotic and eukaryotic cells?
Lack of membrane-bound organelles in prokaryotic cells
Which cellular feature is unique to prokaryotic cells?
Flagella
What is the function of membrane carbohydrates in the plasma membrane?
Regulate the movement of molecules across the membrane
What distinguishes facilitated diffusion from simple diffusion?
Relies on specific carrier proteins to facilitate movement
Which cellular connection type allows for direct cell-to-cell communication?
Gap junctions
What is the primary function of the Na+/K+ pump in biological membranes?
Transporting Na+ ions into the cell and K+ ions out of the cell
Which type of solution would cause a red blood cell to shrink due to water loss through osmosis?
Hypertonic solution
What is the difference between primary and secondary active transport?
Primary active transport requires ATP, while secondary active transport doesn't
What is the role of enzymes in biological reactions?
Provide an alternative pathway for a reaction to occur at a lower energy cost
What is entropy in the context of thermodynamics?
A measure of disorder or randomness in a system
How do allosteric enzymes differ from non-allosteric enzymes?
Allosteric enzymes change conformation upon binding an allosteric regulator, affecting their activity, while non-allosteric enzymes maintain a fixed conformation
Prepare for Exam #2 of BIOL 2050 by reviewing the components of cell theory, understanding why cell size is limited, distinguishing between prokaryotic and eukaryotic cells, and exploring the features and functions of prokaryotic cells.
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