<span>Cross bridges are created when myosin heads bind to ATP. This phenomenon is basically muscle contraction at work. In order for myosin heads to be bound with ATP at the actin active site, it must be excited with Calcium.
Once myosin heads bind with ATP, it begins to slide and perform muscle contractions in the body, allowing a person to move.</span>
It’s D “doing 100 sit ups in 5 minutes”
Answer:
Codeine
Explanation:
Codeine is an opiate and is used to treat mild and moderate pain. It is also the main ingredient in prescription based cough suppressant. It belongs to a class of drugs known as opioid analgesics.
Codeine is a naturally occurring phenanthrene alkaloid with opioid agonist and can be extracted directly from the plant although most codeine is synthesized from the opium poppy.
1. Humboldt
2. Mendocino
3. Sonama
4. Butte
5.Santa Clara + Alameda + San Mateo + Santa Cruz (according to thr map I found there were 4)
6. San Luis Obispo + Santa Barbara (2)
7. Orange + San Diego (2)
