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sweet-ann [11.9K]
3 years ago
8

What happens during the S subphase of interphase?

Biology
1 answer:
Aleksandr-060686 [28]3 years ago
8 0
A) The DNA replicates, producing two copies of each chromosome.
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To disprove spontaneous generation, pasteur used swan-necked flasks to allow entry of air to the boiled broth while blocking con
Andru [333]

Pasteur produced a nutrient broth and placed equal amounts of it in two long necked flasks. One flask had a straight neck (control) and the other had a swan shaped bent neck (being tested). He boiled the broth in both the flasks to kill any living organism that might be surviving on it. The two flasks were then left in the open air of the room to cool down. After several days passed, Pasteur noticed that the broth in the straight necked flask had changed its color but the swan necked flask didn't. From this observation he was able to conclude that the straight necked flask had let the organisms enter the flask and contaminate the broth. The swan necked flask blocked the entry of the organisms from the open air and thus remained unaffected.

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3 years ago
Which of the following would be one way a farmer could increase the amount of available nitrogen in his fields without adding a
katovenus [111]

The correct answer is:

Grow a legume crop to support the development of root nodule

The best way that a farmer could increase the amount of nitrogen in his fields without adding synthetic fertilizer is to grow a legume crop to support the development of root nodules. This is because legumes have a symbiotic relationship with bacteria found in the soil. 

Explanation:

Legumes use nitrogen fixing bacteria, specifically symbiotic rhizobia bacteria, within their root nodules to counter the limitation.The plant root cells convert sugar into organic acids which then supply to the rhizobia in exchange, hence a symbiotic relationship between rhizobia and the legumes.

4 0
3 years ago
Read 2 more answers
Question 12 (1 point)
garik1379 [7]

Answer:

legumes

plants they eat

Explanation:

Legumes have bacteria attached to it to allow for nitrogen absorption

the bacteria provide the plant with nitrogen, then the plant is eaten (bacteria can no longer provide more nitrogen if eaten).

5 0
3 years ago
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The table shows the doubling time of the world’s population throughout history.
postnew [5]

It would 100% be 40 to 50 years old.

7 0
3 years ago
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Please I urgently need help with this
Paul [167]

Answer:

A - Stigma

B - Anther

C - Filament

D -  Style

E - Ovary

F - Petal

Explanation:

The above are the correct answers of the image drawn in the attachment.

These are parts of a flower.

A - Stigma: It is the head of the pistil. It contains a sticky substance that catches pollen grains from other pollinators.

B - Anther: This is the head of the stamen. It produces pollen grain.

C - Filament: It is a long slender part of the flower. It attaches the anther to the flower.

D -  Style: It actually holds the stigma.

E - Ovary: It holds the ovule. Found at the base of the pistil.

F - Petal: It attracts pollinators to the flower.

8 0
3 years ago
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