One can stimulate a baby to breathe by slapping his butt or by flicking the soles of his feet. This is normally done in order to stimulate a baby to take his first breath through the process of crying. Crying will force the baby to take his first breath and at the same time, it will enable the lungs and the airways to be cleared of liquid substances.
Antibiotics are used to treat or prevent some types of bacterial infection. They work by killing bacteria or preventing them from reproducing and spreading. Antibiotics aren't effective against viral infections, such as the common cold, flu, most coughs and sore throats.
Antibiotics may be used to treat bacterial infections that:
- Are unlikely to clear up without antibiotics.
- Could infect others unless treated
could take too long to clear without treatment.
- Carry a risk of more serious complication.
You want examples? Here they are:
Animal studies:
1. Test whether dogs react more to smell or to their owner's attention to an object: they have to choose between a plate that smells more of food and a plate their owner paid attention to
2. Test whether dogs can follow their owner's gaze: owners call the dogs and then look somewhere and we see whether dogs follow this gaze (look up gaze-following, it's important for learning!)
3. Test whether birds can use tools: give bird a long stick and a box with a peanut inside and see if they can use the stick to get the peanut out
4. Test whether vision can develop in the absence of stimulus: bind kitten's eyes at birth and see if they'll develop perfect vision (they didn't...)
A is correct. Catalysts are substances that accelerate a chemical reaction, and enzymes are catalysts that increase the rate in cellular reactions.
