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Mashcka [7]
2 years ago
15

Need answer quick please thanks

Biology
1 answer:
Andre45 [30]2 years ago
8 0

Answer:

Aa would be ur answer:)))

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Cell at metaphase of mitosis contains 20 sister chromatids, how many chromosomes will be present in a g1 cell? if a cell at meta
kumpel [21]

Answer:

The correct answer would be 10.

The cell cycle can be divided into four phases namely gap 1 (G₁) phase , synthesis (S) phase, gap 2 (G₂) phase, and  mitosis (M) phase.

DNA (deoxyribonuceic acid) content is only replicated and doubled in the S phase. However, the chromosome number remains the same. It can be explained as the number of chromosomes remains the same (2n) but number of chromatids doubles (4n) after S phase.

The number of chromatids restores to 2n in daughter cells after completion of mitosis.

Hence, if number of chromatids in metaphase was 20 i.e. 4n then the number of chromosomes (2n) would be 10.

Hence, 10 chromosomes or 5 pairs of chromosome would be present in the cell during its G₁ phase.

4 0
3 years ago
Ill give Brainlist!!!!!
velikii [3]
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
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2 years ago
What are five functions of proteins
LuckyWell [14K]
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5 0
3 years ago
What happens to the vegetation around a body that has Just been buried?
max2010maxim [7]

Answer:

here's your answer

Explanation:

When buried six feet down, without a coffin, in ordinary soil, an unembalmed adult normally takes eight to twelve years to decompose to a skeleton. However if placed in a coffin the body can take many years longer, depending on type of wood used. For example a solid oak coffin will hughly slow down the process.

pls make it the brainliest

3 0
3 years ago
Read 2 more answers
Describe pulmonary circulation pathway using the following terms: deoxygenated blood, left atrium, lungs, oxygenated blood, pulm
ehidna [41]
Definition:
                  "The type of circulation pathway in which venous blood is passed
                   <span>from the right atrium of the heart through the right ventricle  and 
</span>                   pulmonary<span> arteries to the lungs where it is oxygenated and its                             return via the </span>pulmonary<span> veins to enter the left auricle and                                                      participate in the systemic </span>circulation"<span>.

Explanation:
                     There are two circulatory path in cardiovascular system namely pulmonary circulation and systemic circulation. Pulmonary circulation path allows for blood circulation through lungs for oxygenation while systemic circulation allows for transport of oxygenated blood to all parts of the body.

Pulmonary Circulation Pathway:
                                                      Pulmonary circulation pathway consist of:

1. Superior and inferior vena cava:
                                                       De-oxygenated blood from lower parts of the body enter to right atrium through inferior vena cava. Similary, deoxygenated blood from upper parts of the body enter to right atrium through superior vena cava.

2. Right atrium and right ventricle:
                                                          From right atrium the blood passes to right ventricle through tricuspid valve. 

</span><span> 3. Pulmonary artery:
                                Afterwards, the blood enters the pulmonary artery via the pulmonary valve. The pulmonary artery divides into two arteries with one artery entering the right lung and the other artery entering the left lung. When the blood reaches the lungs through the left and right pulmonary arteries, it moves over alveoli via the capillary beds. </span><span>

</span><span>4. Left atrium and left ventricle:
                                                 After the blood gets oxygenated, it moves back to the heart and this time moves into the left atrium, completing the pulmonary circulation path.</span><span>
                        
</span>

6 0
2 years ago
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