Answer:
The answer is D.
Explanation:
This picture above shows the image of a <em>barred spiral galaxy</em>.
It is from Google.
That instant ... typically some moment on june 21 or 22 ... marks
the beginning of the northern hemisphere Summer.
A)Patent
Patent fingerprints, on the other hand, can be made by blood, grease, ink, or dirt.
Multiply by the power of 10x and you get your answer. Which is by to ten.
The correct answer is: A. Myofibrils contain thick and thin filaments.
Skeletal muscle cells are called muscle fibers because of their long and cylindrical shape. The plasma membrane of muscle fibers is sarcolemma, the cytoplasm is sarcoplasm, and the smooth endoplasmic reticulum sarcoplasmic reticulum (SR) Sarcoplasmic reticulum is specialized becaused it is involved in the process of contraction, so it stores, releases, and retrieves calcium ions.
The functional unit of a skeletal muscle fiber is the sarcomere which consists of highly organized contractile myofilaments actin that are thin filaments and myosin (thick filaments), together with other support proteins.
