Answer:
B is INCORRECT
Explanation:
Action potential in contractile cells can be divided into 3 phases
1. Rapid depolarization; caused by fast influx of sodium ions into the cells. Last a few milliseconds.
2. Plateau phase: This is a sustained positive membrane potential, after rapid depolarization, caused by a balance between calcium ion influx and slow potassium ion efflux.
3. Rapid repolarization: Eventually there's a closure of all other ion channels except the potassium ion channels causing rapid efflux of potassium ions, returning the membrane potential back to negative.
A refractory period usually occurs after undergoing an action potential. During this time no action potential can occur.
Answer:
because it happens in that order, and repeats multiple times after the first time.
Answer:
bones protect vital organs
Explanation:
there are approx 200+ bones only on average, hence the first is out
bike is produced in the bike duct which acts to break down fats into simpler substance for the body to intake
red blood cells are produced and stored in the bones and not carbohydrates
the smallest bone is found in your ear, hence the last one is out
Answer:Plants have adaptations to help them survive (live and grow) in different areas. Adaptations are special features that allow a plant or animal to live in a particular place or habitat. These adaptations might make it very difficult for the plant to survive in a different place. This explains why certain plants are found in one area, but not in another. For example, you wouldn't see a cactus living in the Arctic. Nor would you see lots of really tall trees living in grasslands.
Explanation:
This earthquake oringed 231 miles.
