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andrey2020 [161]
3 years ago
14

Describe what happens to chromosomes before mitosis.

Physics
1 answer:
Brums [2.3K]3 years ago
6 0

Explanation:

Before mitosis, the chromosomes are copied. They then coil up, and each chromosome looks like a letter X in the nucleus of the cell. The chromosomes now consist of two sister chromatids. Mitosis separates these chromatids, so that each new cell has a copy of every chromosome

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How can we find the volume of a small pebble with the help of measuring cyilinder
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We can find the volume of a small pebble with the help of measuring cylinder by using the water displacement method. <span>The </span>water displacement method<span> <span>is the process of measuring the volume of an irregularly shaped object by immersing it in water. </span></span>I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

5 0
3 years ago
A heat engine has a maximum possible efficiency of 0.780. If it operates between a deep lake with a constant temperature of-24.8
Volgvan

Answer : The temperature of the hot reservoir (in Kelvins) is 1128.18 K

Explanation :

Efficiency of carnot heat engine : It is the ratio of work done by the system to the system to the amount of heat transferred to the system at the higher temperature.

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\eta =1-\frac{T_c}{T_h}

where,

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\eta =1-\frac{T_c}{T_h}

0.780=1-\frac{248.2K}{T_h}

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