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Papessa [141]
3 years ago
9

DNA is made up of: Please help thank you

Biology
1 answer:
REY [17]3 years ago
7 0
2 chains and 4 nucleotides
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K<br><br> Name the element:<br><br> Number of shells?<br><br> Valence electrons?
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Potassium, 4 shells, 1 valence electron
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Scientists studied isolated cells at various stages of the cell cycle and found that some cells have 1.5 times more DNA than the
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Answer: S- phase of cell cycle

Explanation:

Cell cycle is a cyclical process taken place in a cell leading to duplication of its DNA and division of cytoplasm to form two daughter cells.

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The S phase of cell cycle is responsible for the replication of DNA. This replication DNA causes it to double before it enters mitosis or meiosis.

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Which are characteristics of all protists? Select two options.
Andru [333]

Answer:

<h3>The correct answers are :</h3>

<u>(B) They have nuclei </u>

<u>(C) They live in moist environments.</u>

Explanation:

Protists are very diverse group of organism, it contains all the organisms that does not fits into other kingdom. All of the protists are not heterotrophs some of them are autotrophs. They reproduce sexually but some of them reproduce asexually. Example: amoeba: binary fission. Some of the protists are multicellular. Some of them are unicellular too.

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How can roots, stems, and leaves all be involved in food storage?
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Answer:

Plant produces food material in the process of photosynthesis in the leaves. The food that is produced in the form of glucose (sugar) is transported from the leaves to other parts of the plants such as roots, stem and seeds with the help of water. When the glucose reaches to the storage part it is stored in the form of starch.

For example, in carrot and potato food is stored in roots while in sugar cane the food is stored in the stem.

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