Recently, a human trachea ( a respiratory organ) was produced by using a patient's own stem cells. The benefit of using the patients own cells to produce a trachea instead of receiving one from a donor is that (1) there will be more enzymes produced to help maintain homeostasis in the trachea (2) there will be an increase in the quantity of antibodies that the patient produces in (3) there is less of a chance that the patients immune system will attack the trachea (4) response to the new trachea

Find and describe the climate zone in which you live,where else in the world do you find this climate zone? do you have any ideas about why the climates might be similar?

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy