Answer:
Top surfaces touched (in a household): doorknobs, household appliances, electronic devices, countertops, tables, chairs, etc.
Explanation:
The top surfaces and items touched were doorknobs, household appliances (fridges, microwaves, sinks, etc), light switches, and countertops. Something that surprised me the most that I touched were the household appliances. I didn't realize how many times I touched the refrigerator and microwave. This observation taught me that microorganisms can spread easily. Just because we aren't around people who sneeze/cough doesn't mean we completely avoid the bacteria. If someone sneezes into their hands and then touches a door knob, everyone who touches it will contract the bacteria. Yes, I find this helpful in understanding the importance of working to break the chain of infection. You should be washing your hands constantly to kill off any bacteria you might've touched in your house. If you're in public and you don't have direct access to a sink, use hand sanitizer and wash your hands as soon as you get home.
Hope this helps!
Explanation:
Epinephrine also called adrenaline is more of a hormone than a neurotransmitter. Hormones are used for signaling by being released into the blood stream. Adrenaline or epinephrine produced by adrenal gland, acts as a hormone. Adrenaline or epinephrine does not have its own receptor, since its chemical composition is quite similar to noradrenaline or norepinephrine, epinephrine stimulates norepinephrine receptors and acts as neurotransmitter. While norepinephrine is primarily a neurotransmitter. A neurotransmitter is used for direct signaling between the neurons generally by physical contact at synapse.
Answer: Tail
The sperm cell uses its tail to propel and travel through the vas
deferens, then pass by the prostate going to the cervix, uterus and fallopian
tube towards the egg. The travel would not be possible without the help of the
mitochondria that releases the energy needed with the journey of the sperm.
