BIOLOGY MIDDLE SCHOOL

What is cytokinesis? Explain the process below and include an image that represents cytokinesis as well.

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Answer 1
Answer:

Cytokinesis is the process by which a cell divides its cytoplasm to produce two daughter cells. As the final step in cell division after mitosis , cytokinesis is a carefully orchestrated process that signals the start of a new cellular generation. The separation of one cell into two is accomplished by a structure called the contractile ring. The contractile ring is a structure believed to operate in a way similar to muscle. A molecular motor, myosin, contracts the actin filaments that form the contractile ring tighter and tighter until the cell is pinched in two. The contraction of the contractile ring has been likened to tightening a purse string to close the top of a pouch. The furrow created by this pinching process is also called the "cleavage furrow," as it is the site at which cleavage of one cell into two cells occurs.  

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What is a nucleotide and a nucloeside?

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A nucleoside is composed of a nitrogenous base attached covalently with the ribose or deoxyribose sugar. A nucleotide is composed of a nitrogenous base attached covalently with the ribose or deoxyribose sugar and also have 1 to 3 phosphate group.
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Of the three body regions of a grasshopper which one is specialized for movement

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The thorax, it has the wings and legs attached to it.

A farmer chooses to breed the cows that produce the most milk rather than the cows that produce less milk. This is an example of A. uniformitarianism and biogeography.
B. artificial selection.
C. natural selection.
D. homologous and analogous structures

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The answer is B. artificial selection. Artificial selection is . a process in the breeding of animals and in the cultivation of plants by which the breeder chooses to perpetuate only  forms that have certain desirable inheritable characteristics (such as, in this case, cows that produce the most milk).
B. Artificial selection

Over the last 120 years, the average temperature of the troposphere has _____.stayed the same

cycled on an annual basis

increased by 0.5ºC

decreased by 0.5ºC

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Over the last 120 years, the average temperature of the troposphere has increased by 0.5ºC.

What signals that a pine tree is capable of reproduction?

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The presence of cones in the tree signals its readiness for reproduction, as the cone contains the seeds! c:
Little sprout that are near the tree and sal in certain areas

What energy transformations happen when you eat an apple

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The energy is moved from the hand into the apple then into your mouth
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