Answer:
helps us to learn about different kinds of plants and animals, their features, similarities and differences.It enables us to understand how complex organisms evolve from simpler organisms
Explanation
step by step
False
Facts are simple observations of the world, and they do not change over time until unless the theory was changed due to different research . Theories are hypotheses about what these facts mean, or how they should be understood, and they could change over time..
The lock and key model is where the substrate has a specific shape which can fit into the specific shape of the active site of the enzyme, just like how a key has a specific shape which can fit into a specific lock.
In other words, the substrate is complementary (same shape) to a specific enzyme, so the substrate can bind/fit to the enzyme.
