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zaharov [31]
3 years ago
15

Explain selective permeability

Biology
1 answer:
nignag [31]3 years ago
5 0
Selective permeability is when a cell membrane allows some molecules or ions to pass through it, but not others.
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2. How has genetics, combined with<br> paleontology, added to our<br> understanding of evolution?
motikmotik

Answer:

To find the extinct species and their divergence of characters can be studied using molecular genetic techniques.

Explanation:

  • Paleontology is the study of ancient species and their remaining that were found millions of years ago. These species extinction can be found and manipulated to find out the origin or divergence of species from their origin
  • The samples of these species may contains their remains that help the biologist to isolate and analyze their protein or DNA. when the DNA is isolated their sequences can be generated using molecular biology techniques.
  • When the sequences are identified by advanced molecular biology techniques, the existence and similarities of different species due to their convergence or divergence can be identified.
  • By identifying the convergence or divergence the characteristics, evolutionary change in behavior, variation in appearance can be studied.
  • By using these techniques, biologist have found that <em>homo sapiens</em>  are 99% have their similarities with chimpanzee
  • Thus, using genetics in paleontology helps us to understand adaptation a species is changing according to the evolutionary changes.

6 0
3 years ago
Why might a scientist want to disrupt the plasma membrane and how might they do this experimentally?
kupik [55]

It is possible to disrupt the plasma membrane by using enzymes and/or detergent agents.

<h3>What is the plasma membrane?</h3>

The plasma membrane is a lipid bilayer that is mainly composed of phospholipids and cholesterol.

In laboratory conditions, it is possible to disrupt this lipid bilayer by using detergent and proteins (enzymes) that break the bonds binding phospholipids.

For example, enzymes can break down the double bonds that bind fatty acids in the lipid bilayer.

In conclusion, the plasma membrane can be break down by applying enzymes and detergents.

Learn more about the cell membrane here:

brainly.com/question/1768729

#SPJ1

6 0
2 years ago
Scientists often use models of the earth because
dimaraw [331]

Answer:

Scientists often use models of Earth to study the movement of earth and it's moon. They figure out what the distance is from the moon to the point between earth and moon where the gravitational pulls of earth and moon are equal.

8 0
3 years ago
What is an advantage that exotic species have when introduced to a new habitat
Bumek [7]

Other than contributing to potential increase in diversity of species in an ecosystem, exotic species have positive benefits like removing toxins from the soil, regulating erosion, and controlling undesirable species.

8 0
2 years ago
Explain Female Reproductive System
WARRIOR [948]
The female reproductive system<span> is made up of seven organs. They are ovary, fallopian tubes, uterus, cervix, and vagina. Basically the main reproductive organ is the ovary</span>
6 0
3 years ago
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