Share
Explore BrainMass

Cell Structure

Chemical Equation for an Organelle

I have been assigned the cell wall, and cell membrane for a biology project. One aspect of the project is determining the chemical equations for the proceses which occur inside that organelle. i have done research on, and off of the internet and have yet to find any answers. Could someone point me in the right direction, or supp

Discussing a Cell's Organelles

Organelles compartmentalize a cell like a department store displays similar items together. What advantage does such compartmentalization offer a large cell and what are two examples of oraganelles and the activities they compartmentalize?

Cytoplasmic membrane system

Autoradiography depends upon particles emitted from radioactive atoms striking a photographic emulsion that lies on top of the tissue section. When the emulsion is developed, the site where the particle struck the emulsion is developed, the site where the particle struck the emulsion appears as a silver grain, as in figure 8.3a.

Myosin Action Versus Kinesin

Myosin action differs from that of kinesin in that one of the kinesin heads is always in contact with a microtubule, whereas both myosin heads become completely detached from the actin filament. How are these differences correlated with the two types of motor activities in which these proteins engage?

The cytoskeleton and cell motility

Because cytoplasmic vesicles are seen to move in both directions within an axon, can you conclude that some microtubules are oriented with their plus end facing the axon terminus and others oriented with the opposite polarity?

Stabilizing Microtubules and Microfilaments

In an actin assembly and a microtubule polymerization, when an ATP/GTP cap is formed, what is meant by "stabilizing" the microtubule or microfilament? Does it stop polymerization and prevent the microtubule or microfilament from continuing to grow or does it just prevent it from falling apart as easily as if the cap was not the