6. Which of the following steps would occur last (after all the others)?
A. Calcium is released from the sarcoplasmic reticulum
B. calcium binds to its regulatory molecule (troponin or calmodulin)
C. the muscle cell depolarizes
D. Acetylcholine is released into the neuromuscular junction

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse

the growth of the plants is affected by the heat of the light. what is the student doing?