Unit 4 E A model is a representation, substitute, or simplification of what is being studied, but it is
also similar to what it represents. There are many types of models, such as physical,
conceptual, or mathematical models. Models have both advantages and limitations. The
model below represents the cycle of matter between photosynthesis and cellular respiration
Assigned
Id or create
Choose
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Energy
copy of the
Gas
Seri
co, + H20
sugar
Energy
Gas
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Which of the following is a limitation of the model shown above?
A The model shows synthesis of new compounds.
B The model is insufficiently labeled
C The model represents two different processes rather than one.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.