1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svlad2 [7]
3 years ago
10

What does it mean for a membrane to be selectively permeable?Select two specific components of the cell membrane and explain how

each affects the permeability of the cell membrane. Meaning, what specific materials are regulated by the given component and how.Why is it important for a cell to regulate what molecules are able to pass into or out of the cell?
Biology
1 answer:
saw5 [17]3 years ago
7 0

Answer:

Selective transport enables the substances to move rapidly through the cell membrane (for instance, H2O, O2 and CO2), while other substances pass through the cell membrane more slowly. Moreover, there are also compounds that can't pass through this barrier.

Explanation:

The selective transport of the substances across the cell membrane enables the cell to maintain the homeostasis of the system by maintaining the ionic equilibrium on both sides of the cell membrane. Moreover, selective transport also is required for carrying out cellular mechanisms, since this mechanism enables the entry and the exit of macromolecules used by the cell to maintain its function and structure.  

The most common mechanisms of selective transport are diffusion and transport active. Endocytosis and exocytosis are active transport process where proteins, lipids, and different types of macromolecules are transported to both sides of the cell membrane through vesicles. Polar molecules (such as for instance, calcium and iron ions) may be transported via transport active, while hormones and vitamins may be transported via passive diffusion.

You might be interested in
How your innate immunity protects you from the pathogens you encounter.
adell [148]

Answer:

The innate immunity in living organisms protects them from the pathogens they encounter daily.

Explanation:

Pathogens are organisms such as virus, fungi, bacteria, protozoa, worms that causes diseases to its host.

For example, Avian flu is a strain or variant of the Influenza virus which predominantly causes a disease in birds such as chickens. The virus responsible for the Avian flu can be passed from birds to humans; when anyone comes in contact with a bird that is carrying the virus i.e a sick bird with Avian flu.

Homeostasis can be defined as a process through which a living organism maintains a steady or stable physical, internal and chemical environment ideal to enhance life and proper functionality.

Also, immunization can be defined as the process of boosting an individual's immunity or immune system against antigens (immunogen) which cause diseases by the administration of vaccines.

Basically, immunization helps to improve the functions of the antibodies, B cells, T cells etc.

If a person becomes infected with a pathogen, such as a virus. The internal stimulus that mainly takes place in order for their body to maintain homeostasis is that their core temperature increases. This is because pathogens such as a virus do not thrive or survive in a hot environment; they're naturally allergic to high temperature (heat).

6 0
3 years ago
You are researching a population of moles. In the course of your research, you identify a nearby population that occasionally co
kifflom [539]

Answer:

Option D, Gene Flow

Explanation:

Gene flow is defined as the flow of genes from one population to other thereby causing variation in the base population. Here the population of mole will have a certain number of genes but its interaction with a foreign species will lead to evolution of population through natural selection and genes of this foreign species will also get mixed with genes of mole population which later on may lead to further variations with in a single set of population inclusive of all .

Hence, option D is correct

7 0
4 years ago
Which cells form the stomata in a plant ? Help please
il63 [147K]

Answer:

parenchyma cells

Explanation:

7 0
3 years ago
Read 2 more answers
Which one of the following statements about the endomembrane system is correct?
Marianna [84]

The correct answer is: Proteins that will be secreted from the cell are likely to be found in closed spaces bounded by membranes of the endomembrane system.  

The endomembrane system is a group of organelles and their surrounding membranes in eukaryotic cells (prokaryotic cell doesn’t have membrane enveloped organelles) that works together in order to modify, package, and transport lipids and proteins. It includes nucleus with its nuclear envelope, lysosomes, the endoplasmic reticulum (smooth and rough), Golgi apparatus but also plasma membrane around the whole cell. The endomembrane system does not include mitochondria, chloroplasts, or peroxisomes.

5 0
4 years ago
Read 2 more answers
The relative abundance of species in an area is called
suter [353]

Answer:Species richness

Explanation:

8 0
3 years ago
Other questions:
  • Living cells use ____________ as their main source of energy. A) carbohydrates B) cellulose C) lipids D) proteins
    9·2 answers
  • Will anyone help me?
    14·1 answer
  • Which of the following describes a relationship of predator-prey? a Oxpecker birds eat parasitic ticks off the backs of zebras b
    12·1 answer
  • Does mRNA have codons or anti-codons
    9·1 answer
  • What two types of precipitation are called minor precipitation?
    12·1 answer
  • How does compaction lead to lithification
    13·1 answer
  • A.
    9·1 answer
  • Describe early land plants
    9·1 answer
  • Describe how the solar system was formed
    10·1 answer
  • This creature feeds mainly on small vertebrates, but sometimes also may take plant material. True, they are very good nocturnal
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!