Biology, 24.03.2021 16:50 PushyGorilla
A nerve fiber contracts on receiving the nerve impulse which is carried from the sarcolemma to
every myofibril by the
A Sarcomere
B Sarcoplasmic reticulum
C Calcium ions
D T-tubules​
Answers: 3
Biology, 22.06.2019 08:30
What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna
Answers: 2
Biology, 22.06.2019 14:30
Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.
Answers: 2
Biology, 22.06.2019 19:30
All other things being equal the size of a population will decrease if
Answers: 2
A nerve fiber contracts on receiving the nerve impulse which is carried from the sarcolemma to
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