⟩ What is antigenic drift?
Series of point mutations that cause minor antigenic variations in the pathogens
Series of point mutations that cause minor antigenic variations in the pathogens
How is the fluid that fills the nucleus called?
What are the substances that constitute the chromatin? What is the difference between chromatin and chromosome?
What are the main structures within the cell nucleus?
What are the main cytoplasmic structures present in animal cells?
What are the main respective constituents of cell walls in bacteria, protists, fungi and plants?
Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell?
In 1665 Robert Hooke, an English scientist, published his book Micrographia, in which he described that pieces of cork viewed under the microscope present small cavities similar to pores and filled with air. Based on later knowledge of what were the walls of those cavities constituted? What is the historical importance of that observation?
Are there living beings without cell?
Do membranes form only the outer wrapping of cells?
What are the three main parts of a eukaryotic cell?