1.)Suggest why slow skeletal muscle fibres are small in diameter. 2.)The toxin curare was discovered in South America, where it was used to tip poison darts. It works by competing with acetylcholine for the receptors on the postsynaptic membrane. Predict the effect of curare on muscular contraction. Explain your answer.

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?