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riadik2000 [5.3K]
3 years ago
12

suggest one or two simple experiments To determine whether a solid white substance is a lipid or a carbohydrate. What evidence w

ould you need to support each hypothesis? PLZ HELP ASAP ;(
Biology
1 answer:
Nimfa-mama [501]3 years ago
4 0
Is it hydrophobic or hydrophilic? Place the substance in water and see what happens... Does it shed all of the water immediately, or does it absorb the water...?

You can also place the substance on some paper. If it makes a grease spot (if you've ever put Cheez-its or Goldfish on your homework paper, you know what I'm talking about) then you know its a lipid. If it does not make a grease spot, you know it is NOT a lipid, so it will be a carb.

If this helped, please make it the brainliest answer! (The button's at the bottom of my answer) :)
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Suppose a chemical was to spill onto the ground and get into the soil. The
chubhunter [2.5K]

Answer:

To clean groundwater you must:

Explanation:

Eliminate the pollution source: An underground tank must be pumped dry and then dug out from the ground. A factory must be required to stop releasing toxic chemicals. Farms must be more careful about the chemicals they put on their fields.

Monitor the extent of the pollutant: Scientists test water in wells. Sometimes they drill wells to test water. They learn how the groundwater is flowing: how fast and in what direction. They study the contaminants in the groundwater. Then they determine where the contaminant plume is going.

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What are the 4 different types of bases in DNA and how do they pair?
Radda [10]

Answer:

the 4 different types of bases - adenine, thymine, cytosine, and guanine

adenine always pairs with thymine, and cytosine always pairs with guanine.

(dont know how they pair)

Explanation:

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What would be most likely to happen if some of the proteins in one of the photosystem were to change shape due to a rise in cell
Sever21 [200]

Answer;

C. A decrease in the formation of ATP

Explanation;

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-Outside factors may cause the plant's pH level to drop during photosynthesis. When this happens, the shape of the proteins may be altered within the two photosystems and cause a decrease in the formation of NADPH, thus adversely affecting efficient photosynthesis, and cause a decrease in the formation of ATP.

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Which Mechanism of microevolution caused the the beak of the medium gound finch population on dafne major to increase in size in
expeople1 [14]

Answer:

Natural selection

Explanation:

Microevolution refers to changes produced at a lower level than species. In genetics, microevolution is the change in the allelic frequency perceptible in a few generations. Most of these naturally produced changes by mutation, natural selection, genetic flux, genetic drift.

After the drought on Daphne Major, many of the plants producing small-sized seeds decreased their reproductive rate drastically. Consequently, there were almost no seeds available for the medium ground finch to feed. The population of this species also decreased to only a hundred birds over two years. Weather conditions and food availability influenced the survival of the animals.

With time, the finched population increased again, but now, the average size of the beaks was larger. The trait modification was related to the availability of only larger seeds with thick husks.

Eating large seeds with medium or small-sized beaks was impossible, so Finches needed to adapt, developing larger beaks to crack open the husks and eat the contents of the seeds.

<u>Natural selection was responsible for the rapid change in the finches´ population beaks size after the drought. </u>The evolutive force modifies the allelic frequencies, increasing the frequency of genetic variants that expressed the larger beak size and declining the frequency of the alleles that expressed smaller beak size.  

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3 years ago
What is the name of the reaction when you burn a fuel?
Andru [333]

Answer:

When fuels burn they release heat energy and light energy to the surroundings in exothermic reactions known as combustion reactions

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your welcome :)

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