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BlackZzzverrR [31]
3 years ago
8

What organelles can only be found in animal cells?

Biology
1 answer:
SOVA2 [1]3 years ago
5 0
The lysosomes are the “garbage disposal” of animal cells , the same process takes place in plant cells in its vacuoles
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What is happening to the DNA molecule in the figure? (Explain the first step in DNA replication)
tatuchka [14]

Answer:

As this is DNA replication, this is the unwounding process

Explanation:

In DNA replication, the parent DNA to be replicated is unwound to enable access of the replication machinery (replisome) to this genetic material. The origin of replication will be identified first, which in the prokaryotes is only one, and in the eukaryotes, we have many. This sites are recognized by specific sequences on the genome. after this, melting of the DNA occurs at this origin creating a replication bubble and two replication forks. This  allows for the unwinding of the DNA by the enzyme Helicases in the direction of the replication fork. Another enzyme present in this step is also the single strand binding proteins (SSB). These proteins function in the prevention of re-anealing of the unwound DNA strand by attaching themselves to each strands. Another enzyme called the topoisomerases also function here by reducing the torque (twisting) produced upstream of the replication fork as result of DNA unwounding. An example is the gyrase

4 0
3 years ago
What are three examples of protists?
Cerrena [4.2K]

Answer:A,B,C

Explanation:

5 0
2 years ago
How does the sea ice in 2019 compare to the sea ice in 2012 during April?
Katarina [22]

The total amount of sea ice showed a decline from 2012 to 2019. The correct option would be D.

<h3>Graphical illustration</h3>

Looking at the graph, from February to June 2012, there is a decline in the amount of sea ice.

A similar decline in the amount of sea ice can be observed in the year 2019.

However, the sea ice levels for the various months in 2012 remain generally above the sea ice levels in the various months in 2019.

Thus, overall, one can say there is a general decline in the ice level from 2012 to 2019.

More on graphical illustrations can be found here: brainly.com/question/21376268

#SPJ1

4 0
1 year ago
Describe the role. of the liver in regulating the concentration of glucose in the body​
leva [86]

Answer:

The liver stores glucose to power the cells during periods of low blood sugar. Skipping meals and poor nutrition can lower blood sugar. By storing glucose, the liver makes sure that blood glucose levels remain steady between meals and during sleep. When blood glucose falls, cells in the pancreas secrete glucagon.

<h2>Have a nice day!!</h2>
4 0
2 years ago
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Which is true of high resistance wires?
EastWind [94]
B. The thinner a wire is, the more resistance is will have.
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3 years ago
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