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KengaRu [80]
2 years ago
15

Climate change storys​

Biology
1 answer:
Zina [86]2 years ago
8 0

We pollute the environment with greenhouse gasses to the earth's climate is getting warmer

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What binds to the prokaryotic chromosome to start dna replication?
Scorpion4ik [409]

Answer:

DNA Helicase

Explanation:

The process of DNA replication is very complex and requires a variety of proteins in the form of Enzymes.

The DNA replication starts at the site which is about 245 base pairs long and is rich in AT sequences called Origin of replication. The origin of replication recognised by an enzyme called DNA helicase which breaks the hydrogen bonds present between the bases and unwinds the DNA. The RNA primase enzymes then synthesizes an RNA primer which gets attached and to which DNA polymerase binds and add nucleotides.

Thus, the first enzyme that binds to the DNA is DNA helicase.

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3 years ago
How are lysosomes and vacuoles the same? How are they different?
Ber [7]
They both are encased organelle compartments inside a cell but A vacuole is the vesicle found within a cytoplasm of a cell. The vacuole contains some fluid. A lysosome, on the other hand, is an organelle found within the cytoplasm of eukaryotic cells.
4 0
2 years ago
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Hmg-coa reductase is a highly regulated enzyme. identify three distinct mechanisms by which this enzyme is regulated. for each,
Rufina [12.5K]
Regulation of HMG-CoA reductase is termed as the rate of controlling enzyme of the mevalonate pathway which produces other isoprenoid and cholesterol.
The regulation of cholesterol is done by regulating the rate which determines step catalyzed by HGM -CoA reductase.
There is long-term and short-term regulation where HGM-CoA is inhibited by phosphorylation and catalyzed of proteins. There is regulated proteolysis of HGM-CoA reductase where degradation of HMG-CoA reductase by oxidized derivatives of cholesterol.
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2 years ago
Which of the following is not true of saliva?
cluponka [151]
The answer is <span>B. contains enzymes that begin the breakdown of proteins.

Saliva is watery substance secreted by salivatory glands. <em>It cleanses the mouth</em> and maintenance oral hygiene. <em>It moistens the food</em>, so the created food bolus could easier pass into the esophagus. It also <em>carries food chemicals to taste receptors</em> so they can be tested. It contains enzymes involved in the food digestions. Some of them are amylase, which begins the breakdown of the starch, and lipase, which begins the breakdown of triglycerides. <u>There are no enzymes in the saliva that break down proteins</u>.</span>
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OMG PLEASE HELP!!!!! TEST SOON!!! Explain how to focus a microscope using the high-power lens. Include any safety issues you nee
BabaBlast [244]
1)magnification goes by 10x (read 10 times), 100x,1000x and some goes 10,000x 

2)Always focus first using lowest power possible first, switch to medium power (100x) after it's focused on low power(10x), on 100x, use the small knob to focus it more. DO NOT touch the bigger nob when in medium or high power. Switch to high power (100x) when it is focused on medium power, again focus again using the small knob on high power. 

3) So it doesn't gather dust and fog up the lense? that one should be self explanatory
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