Answer:
The following is the formula to determine the size from minor spaces and ocular spaces on the stage micrometer:
Size = Number of minor spaces * 10 micrometer / Number of ocular spaces
A = Number of minor spaces is 2 and the number of ocular space is 1,
Size = 2 * 10 / 1 = 20 micro micrometer. Thus, the size of a bacterium is 20 micrometers.
B = Thus, it can be said that the size of the bacterium is almost 4 times bigger in comparison to a human red blood cell, which is 6 micrometers in diameter.
Answer:
C. Initially, the mouse and human proteins were confined to their own halves of the newly formed hybrid cell, but over time, the two sets of proteins became evenly intermixed over the entire cell surface. This suggests that proteins, like lipids, can move freely within the plane of the bilayer.
Explanation:
Due to the fact that a membrane is a two-dimensional fluid, a lot of its proteins, as it is seem in lipids, can flow without obstruction in the plane of the bilayer. This lateral diffusion was at first illustrated by analysing the fusion of a mouse cell to a human cell to produce a big, hybrid cell and then follow up the dispersion of specific mouse and human plasma membrane proteins. In the start up, the mouse and human proteins are restricted to their respective halves of the just produced hybrid cell, but in the space of half an hour or so, the two groups of proteins are noticed to be equally combined over the whole cell surface.
The M phase of mitosis and M phase of meiosis both occur after interphase.However, the two processes differ in the arrangement and behavior of their chromosomes<span>. ... The pairing up of homologous </span>chromosomes<span> and crossing over only </span>occur<span> during </span>meiosis<span>.</span>
Answer: The field is experiencing <em><u>Secondary succession.</u></em>
Explanation:
Ecological communities change slowly over time. While <em>primary succession</em> is initiated by pioneer species in areas that haven't previously been colonized; secondary succession always follows other communities. <em>Secondary succession</em> follows major disruptions in communities like fires, storms, flooding and even human disturbance.
The field becoming overgrown is typical of secondary succession. After years of disuse, the field is being occupied by species more <em>capable</em> of thriving in changed conditions. The community may be on its way to becoming a stable climax community if no further disruptions occur.
The correct answer is B)attachment of microtubules to kinetochores.
Mitosis is a process of cell division in which newly replicated chromosomes separated equally into two parts of a cell. During late prophase of the mitotic cycle, the nuclear envelope breaks down or disappear. This allows attachment of the microtubules to the kinetochores of sister chromatids at the metaphase-anaphase transition. The attachment finally leads to the formation of two daughter cells.
