Neurotransmitter molecules are removed from a synapse by

a) being abosorbed by adjoining muscle tissues

b) being broken down by enzymes

c) being reabsorbed by the presynaptic neuron

d) both (B) and (C)

The best way is a combination of several things: physical interaction with others of its own kind or specially-trained human companions, desirable features in the enclosure such as swimming pools and ledges for perching and sleeping, and toys to

Which of these statements describe a modified endowment contract (mec) ?

Which of the following is NOT a flowering vegetable? Broccoli Brussels sprouts Cauliflower Zucchini

Which statements about the regulation of transcription initiation in these genes are true? 1) The fantasin gene will be transcribed at a high level when activators specific for control elements A, B, and C are present in the cell.

It has been found that a low moisture level in the environment reduces the activity of microbial enzymes. Explain why the rate of nitrate formation in soil is expected to be lowest during dry summers.

Grana, thylakoids, and storms are all components found in

Why can't animal cells experience turgidity?

Choose one concrete example of a cells response after its signal has been received and describe it.

What object is used to focus light in a light microscope

What is an allosteric site? 1) The site on an enzyme where the substrate binds. 2) The area on a competitor molecule that inhibits an enzyme reaction.