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WINSTONCH [101]
2 years ago
5

⚠️40 POINTS!!⚠️

Biology
2 answers:
Volgvan2 years ago
4 0
I’m almost sure it’s called the Polar regions but I can’t remember much
aivan3 [116]2 years ago
4 0

Answer: The Arctic Tundra.

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Which molecules are not able to permeate the cell membrane
max2010maxim [7]

Answer:

Small uncharged polar molecules, such as H2O, also can diffuse through membranes, but larger uncharged polar molecules, such as glucose, cannot. Charged molecules, such as ions, are unable to diffuse through a phospholipid bilayer regardless of size; even H+ ions cannot cross a lipid bilayer by free diffusion.

Explanation:

6 0
3 years ago
What is the difference between a coarse knob and a fine adjustment knob on a microscope
AysviL [449]
Coarse is less precise where the fine is made for small adjustments
3 0
3 years ago
2. Based on your answer to question 1, what do you think could be done to reduce levels of
levacccp [35]

Answer: Carbon dioxide (CO2) is a colorless gas that is naturally present in the air as a result of the natural carbon cycle of our planet. While emissions come from many natural sources, it is the CO2 produced by manmade processes such as fossil fuel combustion and power plant emissions that are problematic. This, in combination with the destruction of natural carbon dioxide sinks through deforestation, is creating an unhealthy environment on our planet and contributing significantly to climate change. here are other things still that can be done to help improve our carbon dioxide situation, even if they aren't tasks the average person can control. For example, as a society, we must continue to push for improved technology in our power plants, so our energy consumption does not produce as much waste.  Improving technology will also help more directly with how much electricity we use. Appliances and electronics are more efficient now than they have ever been in the past, but we should always strive for better regardless. Doing your individual part may not seem like much in the grand scheme of things, but if everyone does their best, it will eventually add up to a significant improvement in the fight against climate change.

Explanation:

3 0
2 years ago
Describe how the student could test for a non-reducing sugar.
ohaa [14]

Answer:

XD WHAT? YESSIR IST JONES SAID THAT HE WAS A GOOD GUY AND HE WAS A GOOD GUY AND HE WAS A GOOD GUY FOR HIS LIFE AS AND WHEN HE WAS THE ONE WHO WAS THE BEST PERSON TO BE A GOOD FRIEND O'FALLON

6 0
2 years ago
This problem has been solved!
larisa [96]

Answer:

The smallest size tube that will hold the entire reaction is 0.5ml

Explanation:

25ul (DNA sample) + 25ul (enzyme) + 50ul (buffer) + 400ul (water) = 500ul total

since 1000ul=1ml, then 500ul = 0.5ml

Answer:

The device that mostlikely would not be used P20

Explanation:

P20 is a pipette used to measure and sample volumes of 20ul maximum.

Answer:

The reaction mix will have 400 units of the enzyme.

The working dilution will be 0.8 Units/ul.

Explanation:

The mix has 20ul of the enzyme which is 20Units/ul. Then we have 20ulx20Units/ul= 400 Units of enzyme in the mix.

Since the final volume is 500ul, the final concentration 400Units/500ul=0.8 Units/ul.

6 0
3 years ago
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