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3 years ago

BO

Biology

1 answer:

kozerog [31]3 years ago

4 0

The correct answer is C. Controlled experiments

Explanation:

A scientific claim is a statement that describes or explains a phenomenon of the world. These statements can be proven as valid or invalid only through scientific experiments, which involve testing in controlled conditions the phenomenon. This is the only way because the scientific method should be followed. For example, if the claim is that humidity affects the growth rate of cacti. The researcher will need to use multiple cacti and use different percentages of humidity to prove if humidity increases or decreases the growth rate. Also, in this case, other factors such as nutrients in the soil, exposition to sunlight, etc. should be controlled to guarantee these factors are equal for all plants. According to this, the one that serves as evidence for the scientific claim is controlled experiments.

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Now can you predict nucleotide quantities in a hypothetical scenario with more than four different types of nucleotides? An alie

den301095 [7]

Answer:

16% is G

12% is T

12%is A

22% is X

Explanation:

Given that each nucleotide is complimentary to another nucleotide, there cannot be more of one than the other. For example, C bonds to G, so there cannot be more C than G, because there would be nothing for it to bond to.

So if there is approximately 16% of the genome composed of C, that would mean that approximately 16% is composed of G (for it to bond to).

The same logic can be used to determine the amount of nucleotide X is present. If Y binds to X, and approximately 22% is composed of nucleotide Y, then the same percentage can be given to nucleotide X, and say the amount of X is 22%.

Now all of the nucleotides have to add up to 100%, so:

A + T + G + C + X + Y = 100%

A + T + (16%) + (16%) + (22%) + (22%) = 100%

A + T = 24%

Given that A binds to T, they must be equal to each other, hence we can say that the concentration of A, equals the concentration of T.

Therefore, the concentration of A is 12%, and the concentration of T is also 12%.

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3 years ago

Why are concerns like safety and recycling important in astronomy, even though the research is often not conducted in a traditio

vovangra [49]

Answer:

To keep the earth safe and clean

Explanation:

If we keep the ocean clean then the water creaters will be able to live better, I mean how would you feel if someone was putting trash in your home., not so good huh. if you recycle your stuff like paper then frewer trees are cut down, yes they do plant one tree every time they take one, but it takes years for the oxygen to rebuild to the same leave, and without trees, not co2 and oxygen.

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3 years ago

What was the difference between Darwin and Lamarck?

GrogVix [38]

The answer is the idea of mutations was understood by both but Lamarck was able to prove it.

8 0

3 years ago

Read 2 more answers

1. What type of response will a red blood cell have when placed in a hypertonic solution?

GalinKa [24]

Hypertonic solution means the solution with a lower water potential than the cell cytoplasm, such as salt water.

When the red blood cell is put into it, since the cell has a higher water potential than the solution, water molecules will flow from the cell back into the water due to osmosis.

Osmosis is always where water molecules flow from a region of higher water potential to lower, through a semi permeable membrane (Whcih is the red blood cell membrane in this case.)

Since water flowed out of the cell, the cell lose water and shrinks.

Hypotonic solution is where the solution that has a higher water potential than the cell cytoplasm.

So when the red blood cell is put in that solution, the water will flow from the solution into the cell this time, by osmosis.

The red blood cell will then gain so much water that the cell membrane cannot hold all and therefore burst.

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3 years ago

Blood pressure decreases below normal levels. Blood flow to the heart decreases. Heart is unable to pump as much blood. Blood pr

Ganezh [65]

Answer:

its called systolic heart faliure or heart faliure with reduced ejection fraction

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3 years ago