The decrease in atp after death causes muscles become stiff in what is known as rigor mortis. why is the lack of atp causing stiffness?
a. because atp is needed to perform the power stroke
b. because atp is needed to in order to form a cross-bridge between actin and myosin
c. because atp is needed to displace troponin
d. because atp is needed to release the calcium ions from the sarcoplasmic reticulum
e. because atp is needed to break the cross bridge between actin and myosin

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph

During photosynthesis, hydrogen ions are most directly used to in the chloroplast pictured above. a) make glucose b) make chlorophyll c) produce carbon dioxide d) drive the production of atp