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AveGali [126]
3 years ago
14

Which feature of a membrane describes whether molecules can cross the membrane?

Biology
2 answers:
ki77a [65]3 years ago
7 0
Permeability is the feature of a membrane
yulyashka [42]3 years ago
7 0

Answer:

-Selective permeable nature.

Explanation:

Plasma membrane allow transfer of certain molecules across it due to its selectively permeable nature. Due to this, only certain molecules or substances (which are are allowed to enter or exit the cells.

Selective permeable nature of plasma membrane is important for cells as it helps in maintaining cellular health, balanced level of fluids and electrolytes, and homeostasis.

Thus, the feature of a plasma membrane that describes whether substances can cross the membrane or not is its selective permeable nature.

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I don't what it wants me to answer, if you understand it please help​
Over [174]

Hello!

An initial observation is the first thing a scientist notices about a topic before conducting the experiment. We can see that it is the first thing in the paragraph in this case, that dandelions grow as unwanted weeds in many lawns.

The hypothesis is the guess about the result of an experiment made before the experiment is conducted. In this case, it is that a weed killer (Killimal) would kill all the dandelions while leaving the grass healthy. This is not specifically a guess made by the scientist, but more like a prediction he wanted to verify.

An independent variable is the variable being changed in the experiment by the scientist. Here, it is whether Killimal was sprayed or not.

The dependent variable is the variable being measured, and the one being affected by the independent variable. His observation would be whether the grass and dandelions would be killed. This is because the weed killer would be directly affecting whether or not these would be killed.

The control variables are ones which are kept the same in the experiment as to not interfere with the final results. In this case, it would be the density of dandelions, the amount of sunlight, and the amount the plants were watered. These were kept exactly the same, as they could've affected the dependent variable if changed.

The control group was the one that is not impacted by the independent variable. The control group makes sure that it actually is the independent variable affecting the dependent, and it isn't some outside unknown variable. This would be the plot without the Killimal.

The experimental group is the one being experimented on from the independent variable. This would be the plot with the Killimal.

Hope this helps!

8 0
3 years ago
Which of the following processes takes place in the ribosomes of a cell?
dimaraw [331]

Answer:

B.Translatiin only

6 0
2 years ago
Read 2 more answers
What type of energy is carried by electromagnetic radiation, such as radio waves, UV light and x-rays?
Sloan [31]

electrical energy

Explanation:

In physics, electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field, propagating through space, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays.

3 0
2 years ago
Upon examining a crime scene you don't locate any visible prints. To identify latent prints you will have to use a powder. There
shusha [124]
<span>1. The investigator should use fluorescent fingerprint powder, so that the prints will be visible on the dark surface when a special kind of light is used. 

2. A possible cause of death would be asphyxia, and is one of the most common causes of death that involve murder and violence. 

3. C. thin layer chromatography and Infrared spectrometry 

</span>
5 0
2 years ago
Read 2 more answers
peoples choices can have a positive or negative effect on their health. describe one positive chocie and one negative health cho
Alina [70]
A positive choice to make to impact one's health is to simply wake up in the morning and get ready, and take time on yourself. That will ensure that you appreciate yourself and will give you a positive mentality throughout the day.

A negative choice to make to impact one's health is to constantly over-think situations, causing stress and an unhealthy state of mind. 
8 0
3 years ago
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