Macrophage cells undergo a process called phagocytosis in which material is brought into a cell in the form of membrane vesicles
and then transported along microtubules toward the cell center. Assuming that the centrosome is near the cell center, you can predict that these vesicles are moving to the _____ end of microtubules using the motor protein _____.
Microtubules are well known as cytoskeletal fibers which plays a major part in the intracellular transport (transportation of vesicles inside the cell) and at the mitotic spindle in the course of mitosis.
The plus end of the microtubules goes via the outer edge or boundary of the cells which is not the same for the MINUS ENDS as they upheld within the centrosome.
Major proteins that aid vesicle’s movement are motor proteins:
• kinesin: is positive end coordinated
• DYNEIN: is negative end directed
We can see that aside vesicles, these group of proteins plays a part too in organelles’ transportation going in opposite directions via the cytoplasm.
14. compound 15. the concentration cannot be increased. 16. heterogenous mixtures 17. chocolate chip cookies 18. vegetable soup 19. a mixture is a pure substance a compound is not 20. Tastes sour
Answer – D. RNA Like proteins, Ribonucleic acid is another kind of organic molecule that also acts as a catalyst for chemical reactions. Asides acting a catalyst for chemical reactions, proteins have a wide variety of functions that they perform in in living cells.
The Miller–Urey experiment (or Miller experiment) was a chemical experiment that simulated the conditions thought at the time to be present on the early Earth, and tested the chemical origin of life under those conditions. The experiment supported Alexander Oparin's and J. B. S.
