Mitosis simply refers to cell division in which one cell divides and produce two new cells that are identical.
Here are the steps:
(1) Prophase
<span>(a) Early prophase when cells starts to break down some structures and build others up. It sets up the stage when the chromosome is dividing.</span><span>(b) Prometaphase, mitotic spindle begins to capture and organize the chromosomes.
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(2) Metaphase
<span>The spindle has captured all the chromosomes. They lined them up at the middle of the cell making it ready for division.
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(3) Anaphase
<span>The sister chromatids separate from each other and are pulled towards opposite ends of the cell.
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(4) Telophase
<span>The cell is nearly finished dividing, and it starts to re-establish normal internal structures as cytokinesis takes place.</span>
Answer:
D. high fever and sore throat
Explanation:
Human herpesvirus 4 is also known as the Epstein-Barr virus (EBV). Human herpesvirus 4 causes infectious mononucleosis (mono). The virus multiplies first in the epithelial cells and then the released progeny infects the memory B cells. The disease is manifested by sore throat and fever. The fever is mild for the whole day but peaks during the early hours of the evening.
An onion cell has a rectangular shape
Answer:
The correct answer would be (b) All scientific theories are subject to change and improvement.
Explanation:
No theory is considered the absolute truth, although some have been proved and deeply studied, through years many theories that were considered completely true, have become incomplete or false. Therefore, as true and correct a theory sounds, it can still be proved wrong in the future.
If the mistletoe population decreased I size the carrying capacity of the apple trees could increase.
<u>Explanation:</u>
Mistletoe is a parasitic species that can affect several tree species. In a parasitic relationship only one party will be benefited while the other party will be affected negatively. The scientific name of common mistletoe is Viscum album L. and it can affect tree vitality and productivity.
Mistletoe can affect the flowering and fruiting of trees which makes apple trees lag behind in fruit production. The infection can also make the trees more susceptible to further attacks from other pests. Thus controlling mistletoe infection would help greatly in improving tree health and productivity.
