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Amanda [17]
3 years ago
11

In an experiment, the group of subjects that do not receive treatment is called the

Biology
1 answer:
weeeeeb [17]3 years ago
8 0

Answer:

C. control group

Explanation:

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Hypothesis: If i add the egg to vinegar then the shell will dissolve within 24 hours
nadezda [96]

Answer :

Vinegar is a weak acid. This is used to make a naked egg. When an egg is added in the vinegar for one day / 24 hrs, it reacts with the eggshell.  The calcium carbonate shell gets dissolve.

Then an egg without shell is formed and the size of the egg does not change. The calcium carbonate reacts with acetic acid and forms carbon dioxide.

When the shell-less egg is kept in the vinegar for 48 hrs i.e. 2 days again, the water content in it enters into the eggs through the membrane. Then the egg gets somewhat bigger.

Otherwise, for 24 hrs, vinegar is acting like an isotonic solution and only dissolves the shell. This experiment would be done for showing the osmosis process through the cell membrane.

6 0
3 years ago
What are the physical infrastructures of X-ray crystallographic structural biology?
Ulleksa [173]

Answer:

The physical infrastructure for X-ray crystallography structural biology includes synchrotrons, which are affordable by a nation. There are 47 in the world (lightsources.org). Each synchrotron provides a number of beamlines for experiments, usually including several optimized for macromolecular X-ray crystallography, often some for other structural biology techniques including SAXS (Small-Angle X-Ray Scattering) and CD (Circular Dichroism), and usually some beamlines for material sciences and other non-biological applications.

Explanation:

https://www.creative-biostructure.com/Data-Processing-and-Interpretation-584.htm

8 0
3 years ago
A scientist uses a camera to study the stars.
padilas [110]

Answer:

I think the answer would be to to write observations about what the sky looks like or to count the number of visible stars in the sky.

7 0
3 years ago
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You observe a small, nonpolar molecule near a membrane. how would this molecule likely transport across the membrane? you observ
yaroslaw [1]
It will transported across plasma membrane by simple diffusion. simple diffusion refers to a process by which molecules will pass across plasma membrane without the aid of channels located on the surface of the membrane. since the molecule identified was polar once it enter in hydrophobic region of the membrane it will not stick since this region is non-polar and therefore it will move easily across that region. 
8 0
3 years ago
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What are two advantages and disadvantages of sexual reproduction?
EastWind [94]

Advantages:

- It brings a unique species

-muktiple offspring that evolve in a fast time

Disadvantages:

-It takes two people

- It takes time


Hope this helps :)

3 0
3 years ago
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