Answer:
A. Increasing the food supply
Polymers are defined as large molecules assembled from smaller, individual molecules.
Answer: B)
Planets like, mercury, venus earth: they are in the increasing order of there masses. however this chain breaks at mars.
Planets like, jupiter, saturn, uranus, neptune are arranged in decreasing order of there masses.
<u>R</u><u>e</u><u>a</u><u>l</u><u>l</u><u>y</u><u> </u><u>d</u><u>o</u><u>n</u><u>'</u><u>t</u><u> </u><u>k</u><u>n</u><u>o</u><u>w</u><u> </u><u>that</u><u> </u><u>my</u><u> </u><u>explanation</u><u> </u><u>e</u><u>v</u><u>e</u><u>n</u><u> </u><u>a</u><u>n</u><u>y</u><u> </u><u>s</u><u>e</u><u>n</u><u>s</u><u>e</u><u> </u><u>b</u><u>u</u><u>t</u><u> </u><u>h</u><u>a</u><u>v</u><u>e</u><u> </u><u>j</u><u>u</u><u>s</u><u>t</u><u> </u><u>t</u><u>r</u><u>i</u><u>e</u><u>d</u><u>.</u>
Microfilaments
Microfilaments are fine, thread-like protein fibers, 3-6 nm in diameter. They are composed predominantly of a contractile protein called actin, which is the most abundant cellular protein. Microfilaments' association with the protein myosin is responsible for muscle contraction. Microfilaments can also carry out cellular movements including gliding, contraction, and cytokinesis.
Microtubules
Microtubules are cylindrical tubes, 20-25 nm in diameter. They are composed of subunits of the protein tubulin--these subunits are termed alpha and beta. Microtubules act as a scaffold to determine cell shape, and provide a set of "tracks" for cell organelles and vesicles to move on. Microtubules also form the spindle fibers for separating chromosomes during mitosis. When arranged in geometric patterns inside flagella and cilia, they are used for locomotion.
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