Most cells in the onion root are not undergoing cell division and they have a large purple circle inside them. What are the circular structures?

Answers

Answer 1
Answer: The purple circular structures are the nucleus.

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If you toss a coin 5 and it lands on heads each time, can you expect the coin to land heads up on the sixth toss? Explain.

Answers

Even though it went on heads the first 5 times there is still 1/2 chance that it will instead land on tails. :)
Hope this helped

Maps are examples of ____ models that people might use everyday.

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maps are examples of physical models
are physical observations of the real world

A certain plant has small, dull colored flowers with no scent . Do you think the plant is pollinated by animals or by the wind? Explain.

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The plant is most likely pollimated by the wind. Vivid ,bright colours along with strong scents attract insects. However, since the plant lacks both of those we can assume that the main factor that helps to its pollination is the wind

the functioning of DNA and RNA are affected by various enzymes. Sometimes, environmental factors can influence how these enzymes work. Which of these are factors that can change enzyme functionality?

Answers

Answer:

Concentration, location, pH and temperature

Explanation:

The concentration of an enzyme can be hugely important for its functionality, with increasing concentration, the enzyme can increase the reaction rate. This means that if the concentration of an enzyme is low, it might not be able to perform its functions optimally as the amount of substrate could be too high relative to the amount of enzyme.

The location of an enzyme is hugely important. It has to be in the correct area of the cell in order to contact its substrate. In this case, the substrates are DNA/RNA, so location on the molecule is important. For example, RNA polymerase is needed to transcribe RNA from DNA, but it should be at the correct location (at the correct gene) in order to perform its function.

Temperature and pH are important environmental conditions that contribute to enzyme function. Enzymes will have a range of temperatures and pH for which it is functional, and within that, a more specific optimal temperature and pH at which it performs its best. Outside this range, the enzyme will not perform its function properly. At very high temperatures and at very low/high pH, the enzyme could even become denatured and destroyed.

Answer:
Its just Concentration, pH, and temperature

Explanation:

I got this question on discovery education and these are the exact answers! :)

Which characteristic is common in old rivers?A. Lack of tributaries
B. Location near headwaters
C. Lack of meanders
D. A low stream gradient

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i think i would say (D) A low stream gradient

At the start of A Midsummer Night's Dream, why can't Hermia marry Lysander?A.
She is in love with Demetrius.


B.
Lysander does not love her.


C.
Her father does not approve of Lysander.


D.
The Duke of Athens has banished Lysander.

Answers

At the start of A Midsummer Night's Dream, Hermia can't marry Lysander because her father does not approve of Lysander. Therefore, option C is correct.

How does Hermia get to marry Lysander?

Hermia is loyal to her love and does not wish to wed Demetrius. Her brashness is a touch reminiscent of Rosalind from As You Like It, one of my favorite Shakespearean heroines.

After falling victim to Puck's enchantment, Lysander mistaken for Demetrius falls in love with Helena, but Helena is in love with Demetrius. The enchantment is eventually undone, allowing Lysander to wed Hermia. The Mechanicals perform their play at the conclusion, and Hermia and Lysander are married.

Thus, At the start of A Midsummer Night's Dream, Hermia can't marry Lysander because her father does not approve of Lysander. Therefore, option C is correct.

Learn more about Hermia, here:

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It would be C
Hermia's father wants her to marry Demetrius, but she is in love with Lysander