Can someone help me? Frost tolerance is a plant's ability to survive below-freezing temperatures. Summarize the steps
you would take to investigate the frost tolerance of petunias (a flowering plant). Be sure to
include the evidence you would look for to determine if the petunias are frost tolerant.

the areas around the equator

ever get the answers? im stuck on this as well

answer; autosomal;

the answer is: the „power stroke“ step.

muscle contraction can be divided into a few steps:

1. the release of ach (acetylcholine) in the synaptic cleft, binding of ach for its receptor and consequently opening of the ca channels.

2. the release of ca, binding of ca for the troponin

3. troponin shifting the tropomyosin, which was blocking the active site on the actin

4. myosin heads attaching to actin by breaking down atp to adp+ pi

5.   formation of the ‘cross-bridge’ on the active site of the actin filament by myosin head

6. “power stroke” -the cross bridge pulls actin, which slides over the myosin

9.     7. the release of adp completes the cross-bridge movement and atp attaches to myosin, breaking the actin-myosin cross bridge.