The h-zone completely disappears in a fully contracted sarcomere because the

myosin is pulled toward the center of the sarcomere

actin is pulled toward the center of the sarcomere

myosin moves toward the z discs

actin moves toward the z discs

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease