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liq [111]
3 years ago
10

What are two reasons why molecules will not diffuse into cells?

Biology
1 answer:
AlekseyPX3 years ago
5 0
Molecules are defined as the smallest particles of a chemical compound or an element, and are made up of atoms. Cells are made up of semi permiable membranes that only allow selected materials to move in or out of the cell, therefore due to the big size of molecules compared to atoms the membrane doesn't allow their passage in the cell. Therefore the cell doesn't allow most molecules to diffuse passively to the cell. Secondly, molecules that can enter the cell requires specific carriers carriers that will enable entry of small molecules in the cell.
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5. Many sciences rely on observation instead of (or in addition to) designed experiments. Compare the data quality issues involv
fredd [130]

Answer and Explanation:

The quality of the data can be higher in observational or experimental studies depending on the subject being researched.

In a way, we can think that experimental studies have better data quality, due to the design of the experiment and the control of the study groups and the variables that are not possible to be established in the obsevational experiments.

However, in the case of studies of abstract subjects, the experimental study ceases to provide high quality activities, and it is necessary to establish an observational study so that efficient data can be promoted.

3 0
3 years ago
After studying the diagram above, Jenny concluded that the layer of clay was older than the layers of sand and gravel.
ss7ja [257]

Both Jenny and Jack are correct.

Explanation:

According to the principle of superposition, both Jenny and Jack are perfectly correct.

The principle of superposition states that the oldest bed is at the bottom and the youngest is on top in an undeformed sequence of rock strata.

From this principle we can see that the sequence of the bed is:

 

  • soil                                                               Youngest rock layer
  • loam
  • sand and gravel
  • loam
  • clay
  • impermeable rock (limestone)                      Oldest rock layer

We can see that truly the clay is older than the sand and gravel according to Jenny.

The limestone is also older than loam according to Jack.

Learn more;

Sedimentary rocks brainly.com/question/9131992

#learnwithBrainly

4 0
3 years ago
______remains in the nucleus while ______ is found in both the cytoplasm and nucleus.
erik [133]

Answer:

DNA and RNA

Explanation:

DNA remains inside while RNA transports

8 0
3 years ago
A patient has diabetes, a disease that causes high blood sugar levels. Which macromolecule will a dietician monitor most closely
Evgen [1.6K]
The answer is a: carbohydrates
Carbs contain high amounts of different sugars, so they should be monitored if someone has diabetes.
3 0
3 years ago
Read 2 more answers
Which of the following would cause an error in DNA replication
alukav5142 [94]

I don't see any options. But, an error can occur if a DNA polymerase inserts an incorrect base.

4 0
3 years ago
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