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Masja [62]
3 years ago
11

How can a scientist test a hypothesis if it is not possible to do a controlled experiment.

Biology
1 answer:
serious [3.7K]3 years ago
3 0

Answer:

In an experiment, the researcher needs to have a control group with an experimental group where both groups are identical in every way except that the controlled group does not gets the experimental treatment.

Sometimes, it is not possible to do a test or the experiment utilizing a controlled trial (due to ethical reasons or no practical method available). All things considered, a researcher may test a theory by making predictions about outcomes or patterns that ought to be found in nature if the hypothesis is right.

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The domestic cat genome contains 2.9×109 base pairs. The length of linker DNA in mammals is 50 base pairs. Approximately how man
IgorLugansk [536]

Answer:

Number of nucleosomes in 2.9 * 10^9bp is equal to 1.47 * 10^7

Explanation:

For wounding one nucleosome, total length of DNA required is equal to 146 bp

The length of  linker DNA in mammals is equal to 50 bp

Thus , the total length of DNA that confides between two nucleosome is equal to the sum of wounding length of DNA and the linker length

= 146 + 50\\= 196bp

Thus, in 196bp length of DNA, the total number of nucleosomes is equal to 1

Thus, number of nucleosomes in 2.9 * 10^9bp is equal to

\frac{2.9* 10^9}{196} \\1.47 * 10^7

8 0
3 years ago
Outline the process of the Carbon Cycle.
Bond [772]

Answer:

Carbon Cycle Definition

Carbon cycle is the process where carbon compounds are interchanged among the biosphere, geosphere, pedosphere, hydrosphere, and atmosphere of the earth.

Carbon Cycle Steps

Following are the major steps involved in the process of the carbon cycle:

Carbon present in the atmosphere is absorbed by plants for photosynthesis.

These plants are then consumed by animals and carbon gets bioaccumulated into their bodies.

These animals and plants eventually die, and upon decomposing, carbon is released back into the atmosphere.

Some of the carbon that is not released back into the atmosphere eventually become fossil fuels.

These fossil fuels are then used for man-made activities, which pumps more carbon back into the atmosphere.

Hope it helps!!!

5 0
3 years ago
I NEED HELP ON EARTH SCIENCE PLEASE ANYONE!!!!!!!
BabaBlast [244]

Answer:

1. A.

2.D.

3.B.

Explanation:

Notepad:  

A. The present is key to the past. The geological processes ocurring today have always  ocurred in the past. So if we want to predict what is going to happen in the future,  we need to understand the Earth's past.  

B. The tests that are used to determine when continental crust was formed are the relative dating and carbon prototyping

C. Open pit mining, this type of mining is very damaging to the environment because strategic minerals are often only available in small concentrations,  which increases the amount of ore needed to be mined.

4 0
3 years ago
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After cytokinesis what phase do cells enter?
ruslelena [56]

Answer:

After Cytokinesis, the cells return to Interphase

8 0
3 years ago
Marta heard that a hormone is released when the stomach is distended that conveys the feeling of satiety to the brain. which hor
murzikaleks [220]
It is the insulin..I gues
7 0
3 years ago
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