Answer:
Eggshells are made of calcium carbonate. If you soak an egg in vinegar the eggshell will absorb the acid and break down, or dissolve. The calcium carbonate will become carbon dioxide gas, which will go into the air.
Explanation:
It will bounce.
I believe that it is testable because you can do it at home.
Independent variable is vinegar.
Answer:
In explanation.
Explanation:
-Exercise effects on the person's body and homeostasis.
Exercise stimulates the sympathetic nervous system and will induce an integrated response from the body; This response works to maintain an appropriate level of homeostasis for the increased demand in physical, metabolic, respiratory, and cardiovascular efforts.
-The Effect of Exercise on Homeostasis
1. Increased Oxygen Consumption.
2. Increased Oxygen Delivery.
3. Increased Body Temperature.
4. Increased Release of Carbon Dioxide.
5. And more.
-More information in this link (if you are looking for homeostasis effects): https://www.livestrong.com/article/369714-how-does-the-body-maintain-homeostasis-in-response-to-exercise/
-More information in this link: https://www.ncbi.nlm.nih.gov/books/NBK482280/
Answer:
A purine always forms a complementary base pair with a pyrimidine.
Explanation:
Purine bases such as Adenine pair specifically with Thymine , a pyrimidine base forming two bonds; just as Guanine pair specifically with Cytosine forming three bonds.
This specific base pairing are complimentary in nature and grants stability to the DNA.
Answer:
If you ate a cookie while you were upside down, your body would try it's best to bring the food to the stomach. There are other forces other than gravity that will help the cookie get to the stomach.
Hope this helps!
Answer:
A) the concentration of calcium ions in the sarcoplasm of a resting muscle
Explanation:
Sarcoplasmic reticulum is a system of the membranous sac that is present around each myofibril and is filled with calcium ions. When muscles are in the resting stage, calcium ions are stored in the sarcoplasmic reticulum.
As the muscle action potential triggers change in voltage-gated calcium ion channels of the sarcoplasmic reticulum, the channels are opened to release the calcium ions in the sarcoplasm. Increased calcium ion levels in sarcoplasm make the muscle fibers to contract.
Removal of acetylcholine from the synaptic cleft ends the production of muscle action potential and calcium ions are moved back from the sarcoplasmic reticulum.
Hence, lower levels of calcium ions are maintained in sarcoplasm when the muscles are in the resting stage.
