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DanielleElmas [232]
2 years ago
10

What is a colloid solution?

Biology
1 answer:
ZanzabumX [31]2 years ago
8 0

Answer:

Colloids or colloidal solutions are mixtures in which microscopically dispersed insoluble particles of one substance are suspended in another substance. The size of the suspended particles in a colloid can range from 1 to 1000 nanometers (10-9 meters).

Hope it helps........

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As a baby, Gina was exposed to a pathogen. Because of passive immunity, Gina's body was able to fight off the pathogen before sh
Serhud [2]

First of all, it is important to understand the difference between passive and active immunity.

Passive immunity is when we are given antibodies that were not produced by our own body (for example those transferred from mother to child, or those taken as part of medication or therapy - note that the former would be an example of naturally acquired passive immunity and the latter of artificially acquired passive immunity).

Active immunity, on the other hand, refers to antibodies that were produced by our own bodies due to exposure to a pathogen or part thereof - this can also be naturally acquired, such as when we are infected by a pathogen, or artificially, such as when we are vaccinated.

Given this information, what enabled Gina to fight the pathogen would be the second answer (antibodies she received from her mother), however we can also look at the other answers and discount them as false to be sure:

Answer 1 - high fever caused by a pathogen

The question states that Gina was able to fight off the pathogen before she got sick - a fever suggests that:

a) she is already sick

b) her body is launching its own immune response

Answer 3 - antibodies she received from a vaccination

The antibodies produced as a result of vaccination are produced by your own body (despite being stimulated artificially through exposure to the pathogen), thus this is not the correct answer.

Answer 4: inflammation caused by antibodies

This answer is incorrect due to the fact that antibodies do not directly cause inflammation.

Thus, the correct answer is the second one 'antibodies she received from her mother'.

Hope that helps :)

3 0
3 years ago
Read 2 more answers
The stages of mitosis were originally defined by cellular features observable through a light microscope.
Brrunno [24]

Answer: TRUE

Explanation:

The cell division that takes place during the growth and development of an organism is in an as MITOSIS. Mitosis takes place in somatic cells that is, body cells that are not involved in the production of gametes. The difference stages of mitosis were originally defined by cellular features observable through a LIGHT MICROSCOPE. These stages includes:

--> PROPHASE: when viewed under a light microscope, each chromosome shortens and thickens and is seen to consist of two chromatids. The Centriole begin to separate.

--> METAPHASE: The nuclear membrane disappears, a spindle forms, the chromosomes line up across the middle of the cell and become attached to the spindle fibres at their centromeres.

--> ANAPHASE: The sister chromatids are pulled apart to opposite ends of cell as the spindle fibres contract.

--> TELOPHASE: A nuclear membrane forms around each set of chromatids, and the cell divides into two daughter cells.

4 0
3 years ago
Explain how ecosystem can change even if people are not involved​
andrew11 [14]

Answer:

The animals could change it. For example, a bunny could dig a hole in the ground, making a home for other animals inside of it, too, changing the animals' living environment.

Or natural disasters could change their environment, too. For example, if a landslide occurred and covered a pond, frogs and snakes could lose their living areas and food, which would make them have to move to a different area, changing another ecosystem.

5 0
3 years ago
A flower has two alleles that control the flower color,
Alexxandr [17]
You should expect to get a green flower similar to when a red and white flower are producing and incomplete dominance is in effect it creates a pink flower
8 0
2 years ago
How many different species are there?kings and kigdoms
Ivanshal [37]

Answer:

2 and 100 million

Because of the difficulties with both defining and tallying the total numbers of different species in the world, it is estimated that there are anywhere between 2 and 100 million different species.

8 0
3 years ago
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