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Alexeev081 [22]
1 year ago
11

Imagine looking through a microscope at a squashed onion root tip. The chromosomes of many of the cells are plainly visible. In

some cells, replicated chromosomes are aligned along the center (equator) of the cell. These particular cells are in which stage of mitosis?
Biology
1 answer:
spin [16.1K]1 year ago
5 0

Answer:

Metaphase.

Explanation:

Metaphase may be defined as the stage of the cell cycle followed after the prophase and before the anaphase. The chromosomes are joined together with the centromere.

This stage can easily be identified in the microscope. The chromosomes are aligned themselves at metaphasal plate in the center of the cell.

Thus, the answer is metaphase.

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Liver tissue is a combination of many types of cells. In addition to other tissues, it contains connective tissue and epithelial
elena-14-01-66 [18.8K]
<span>Connective tissue supports the framework of the liver, and epithelial tissue protects the liver. Connective tissue holds the liver in place during movement, and epithelial tissue forms the lining of the liver. Connective tissues are mainly used in forming support networks within tissues and Epithelial tissue tend to line the organs and form protective cell layers.</span>
6 0
2 years ago
Read 2 more answers
Column A Column B a. Astrocyte b. Axon c. Collateral d. Dendrite e. Myelin f. Neurilemma g. Neurofibrils h. Nissl bodies (chroma
xenn [34]

Answer:

1.) neurilemma (option f)

2.) nissil bodies (chromatiophillic substance)

3.) neurofibrilis ( option g)

4.) myelin ( option e)

5.) dendrite ( option d)

6.) collateral ( option c)

7.) astrocytes (option a)

8.) axon ( option b)

9.) Unipolar neuron (option i)

Explanation:

The neurological terms described above are different parts of a nerve cell or neurones. The nerve cells are the basic Structural units of the nervous system. They are highly specialised for transmitting electric impulses. They can also be grouped according to the number of processes they possess, for example, the UNIPOLAR NEURONS( those with one process only). Each neuron, however, is composed of the same basic parts which include:

--> The CELL BODY: they may be angular or oval in shape with a large nucleus and dense granulated cytoplasm. In the cytoplasm, rough Endoplasmic reticulum which contains CHROMATIOPHILLIC SUBSTANCE (nissil bodies) and Golgi apparatus are also seen.Network of threadlike structures known as neurofibrilis are also seen within the cell body and extending into axon.

--> DENDRONS: these are one or more extensions which branches to form many fine dendrites. The DENDRONS carry nerve impulses( action potential) that their dendrites receive to the cell body.

--> AXON: this is a long process which branches at it's free end to end in synaptic knobs. It carries electric impulses away from the cell body. Most times, a substance of Schwann cell known as MYELIN SHEATH which is composed of lipoprotein insulates axons and increases impulse speed.

3 0
1 year ago
Growth hormone and insulin are protein hormones that regulate carbohydrate metabolism by hepatocytes (liver cells) through the a
Yanka [14]

Growth Hormone and insulin are protein hormones that promotes the growth and regulation of substrate metabolism.

Explanation:

The Growth Hormone performs the metabolic actions in various tissues like liver, muscle, and pancreas through insulin growth factor. Insulin slows down the growth hormone signalling through the growth hormone receptor. It is important for maintaining the responsiveness of liver to growth hormone.

The insulin signalling pathway is very important in metabolic diseases like diabetes and aging. These insulin activates a phosphorylation cascade that branches to form a network affecting multiple biological processes.

5 0
2 years ago
Which best describes a difference between transcription and DNA replication??
Mashcka [7]

Answer:

<em><u>The right answer is "D".Transcription uses uracil.</u></em>

Explanation:

The genes carried by the DNA will be encoded in another form: messenger RNA, during a process called "transcription".

The DNA and RNA molecules are chemically very close, but the second has an extra oxygen (in red on the right of the letters) on the sugars (riboses) that make up its nucleotides (the DNA actually contains deoxyribose). In addition, the thymine (T) of DNA is replaced by uracil (U) in RNA.

Hope this help

Have a nice day!!

6 0
1 year ago
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Which of the following describe a stem cell? Select three options.
telo118 [61]
Where is the options ???!!!
4 0
1 year ago
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