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

Texas bluebonnet plants seen in this photo are an example of which ecological unit?

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !