Answer:
active transport
Explanation:
they are using energy to move across the membrane, using energy means its active Hope this helps
They are composed of actin, troponin, tropomyosin, and myosin
Question:
how does a tumor form?
Answer:
En general, los tumores ocurren cuando las células se dividen y se multiplican excesivamente en el cuerpo. Normalmente, el cuerpo controla la división y el crecimiento de las células.
English:
In general, tumors occur when cells divide and multiply excessively in the body. Normally, the body controls the division and growth of cells.
Pretty sure the answer is A
