9 Questions
Enzymes are biological ______ that speed up chemical reactions
catalysts
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, down a ______ gradient
concentration
Osmosis is the movement of ______ molecules across a selectively permeable membrane from an area of high ______ potential to an area of low ______ potential
water
Match the following concepts with their descriptions:
Structure and function of enzymes = Relates to the specific shape and role of biological catalysts The effect of pH and temperature on enzyme action = Influences the activity of biological catalysts Diffusion = The movement of molecules from an area of high concentration to an area of low concentration Osmosis = The movement of solvent molecules across a selectively permeable membrane
Match the following terms with their definitions:
Active transport = Movement of molecules across a cell membrane using energy Enzymes = Biological catalysts that speed up chemical reactions Diffusion = Passive movement of molecules from high to low concentration Osmosis = Passive movement of solvent molecules across a semi-permeable membrane
Match the following concepts with their processes:
Structure and function of enzymes = Relates to the specific role and shape of biological catalysts The effect of pH and temperature on enzyme action = Influences the activity of biological catalysts Diffusion = Passive movement of molecules from high to low concentration Osmosis = Passive movement of solvent molecules across a selectively permeable membrane
What is the effect of high temperature on enzyme action?
It denatures the enzyme, leading to loss of function
What is the primary driving force behind diffusion?
Kinetic energy of molecules
How does active transport differ from simple diffusion and facilitated diffusion?
It moves molecules against the concentration gradient
Test your knowledge of enzymes and the movement of molecules with this quiz. Topics covered include the structure and function of enzymes, the impact of pH and temperature on enzyme activity, as well as concepts of diffusion, osmosis, and active transport. Prepare for your test by reviewing these key concepts.
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