Microtubules are tiny, hollow, bead-like tubular structures that help cells maintain their shape. Along with microfilaments and intermediate filaments, they form the cytoskeleton of the cell, as well as participate in a variety of motor functions for the cell.
Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere
Answer:
Black Mice
Explanation:
A term that refers to the survival of only those organisms best able (fittest) to obtain and utilize resources, resulting in the evolution of organisms that are best adapted to the environment.
Answer:
gene
Explanation:
the genes that code for protein are made up of tri-nucleotide units called condons
