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tensa zangetsu [6.8K]
3 years ago
11

The two main stages of cell division are called ?

Biology
1 answer:
Ierofanga [76]3 years ago
5 0
The answer is D mitosis and cytokinesis
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The diagram below represents a change in guard cells that open and close pores in a plant) This Change directly helps to A. incr
AveGali [126]

The correct answer is option C, that is, regulate water loss.  

Guard cells refer to the cells enclosing each stomata. They assist in monitoring the rate of transpiration by closing and opening the stomata. The guard cells possess the tendency to monitor the closing and opening of stomata by changing shape. The shape of the guard cells modifies on the basis of the concentration of potassium ions and water found in the cells themselves.  

The stomatal pores get closed when carbon dioxide is no longer needed for the process of photosynthesis. The guard cells swell when movement of water takes place inside these pores, and thus, the opening of stomatal pores occurs, and as water moves out, the guard cell closes. Thus, guard cells play an essential role in regulating water loss.  


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2 years ago
How does specific heat influence biological systems?
MA_775_DIABLO [31]
A high specific heat enables organisms to resist temperature fluctuations.
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3 years ago
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Who created an accurate model of the structure of DNA?
mars1129 [50]
It was Watson and Crick
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3 years ago
Excessive nutrients in the Chesapeake Bay foster the growth of algae, which robs the aquatic life of sunlight and oxygen. The MA
saveliy_v [14]
The answer in agriculture.

<span>In agriculture, fertilizers are commonly used. But when they reach the bay, they could be cause of escessive nutrients. </span><span>Algae use the presence of increased nutrients and enhance their own growth. It is known that they produce an oxygen in the photosynthesis, so it is not a problem while they are still alive. But when these organisms die, their decomposition begins. For the process of decomposition, the oxygen is needed and ultimately it will be depleted from a body of water. This will lead to the death of aquatic animals that depend on oxygen.</span>

5 0
3 years ago
He type of mutation represented below is a(n) __________. the big red fly had one eye (wild type) the fbi gre dfl yha don eey (m
HACTEHA [7]

Answer:

Framshift mutation

Explanation:

The frame shift mutation is also known as reading frame shift or framing error mutation, during which an insertion or deletion occurs at a single position but it effects the sequence of whole gene in such a way that complete sequence is disturbed.

If we look at the sequence given in example:

Wild sequence: the big red fly had one eye

Mutant:               the fbi gre dfl yha don eey

An insertion mutation occured at the start of sequence big, where f got inserted. We know that a 3 set of nucleotides called codon is transcribed and translated into single amino acid of protein. So when f got added it disturbed the frame and all the sequences of next codons got altered.

  • big  changed to fbi
  • red changed to gre
  • fly changed to dfl
  • had changed to yha

In short the ehole protein will have wrong sequence of amino acid and it is worst type of mutation that badly effects an organism.

Hope it help!

4 0
3 years ago
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