Nan experiment, a scientist notices that an enzyme’s catalytic rate decreases when the ph of the environment is changed. which of the following best summarizes the effect of ph on the enzyme? ph changes the atomic structure of the enzyme. ph changes the ability of them he enzyme to dissolve in water. ph changes the shape of the enzyme. ph takes energy away from the enzyme, thus slowing it down.

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later.when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

Chinese privet is a plant that is native to china. over 150 years ago, chinese privet was introduced to the united states as a fast-growing shrub that serves as an excellent privacy hedge. with no natural herbivore, chinese privet quickly established itself and spread in natural areas throughout the southeast and eastern seaboard of the united states. its dominance in these areas has jeopardized the survival of native plant species. chinese privet provides evidence that introducing non-native organisms can cause environmental damage integrated pest management strategies will not decrease chinese privet populations american gardeners can easily control the spread of chinese privet non-native plant species have type i survivorship curves

What is the importantence of the carbon and nitretan cycles in the environment