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
Crazy boy [7]
2 years ago
10

Give two examples of partially permeable membranes?​

Biology
1 answer:
zheka24 [161]2 years ago
6 0
The most common example is the phospholipid bilayer cell membrane that surrounds every cell in our bodies. Another example of a selectively permeable membrane is the inner membranes of an egg.
You might be interested in
Describe the role of the following in synaptic communication:______.
Scilla [17]

Answer:

1- Ionotropic receptors form ionic channels that allow certain ions to pass through the plasma membrane, and metabotropic receptors, which are associated with G proteins and have a modulating action on synaptic transmission.

2-Neurons communicate with each other through neurotransmitters, which are the molecules responsible for sending signals from one neuron to the next neuron. Neuromodulators also enter into communication between nerve cells.

3-Rapid PPSE occurs when postsynaptic nicotinic receptors on dendrites and neuronal cell bodies are activated through acetylcholine, which causes membrane depolarization and allows the entry of Na and Ca ions.

Acetylcholine also allows the activation of postsynaptic muscarinic receptors, which leads to the slow excitatory postsynaptic potential. This occurs when the channels are Ca and Na open and the K channels are closed.

4-When the neurotransmitters are attached to their receptors, the opening of the ion channels can be opened. This leads to two types of postsynaptic potentials being generated: postsynaptic excitation potentials (PEPs), if the membrane potential is depolarized, and the postsynaptic potential inhibitors (PIPs), if the membrane potential is hyperpolarized.

Explanation:

1-The importance of studying neurotransmitter receptors is that most of the drugs of clinical importance, such as anesthetics, anticonvulsants, etc., are based on the mechanisms of action of these receptors

2-Neurotransmitters allow them to produce or not action potential, serves to activate postsynaptic receptors and are capable of opening ion channels. On the other hand, neuromodulators are responsible for regulating the activity of ion channels.

3-The fast PPSE reaches 15 milliseconds. The slow PPSE lasts approximately 1-2 minutes.

4-PEPs occur when the ionic channels of Na + or Ca2 + are opened, while PIPs when the channels  of K + or CI- are opened.

8 0
3 years ago
¿Qué les explicarías y con qué argumentos basándote en conocimientos científicos para convencerlos de practicar el distanciamien
olga nikolaevna [1]

Answer:

Experimentos de índole descriptiva han demostrado que diferentes tipos de virus no pueden desplazarse por aire, con lo cual estas estrategias resultan efectivas para evitar su esparcimiento en la población

Explanation:

El distanciamiento social y el uso de barbijos son herramientas útiles para combatir la propagación de muchos virus, especialmente aquellos con un alto indice de infección, como es el caso del nuevo Coronavirus Sars-Cov-2 el cual está asociado a un síndrome respiratorio agudo que puede incluso llevar a la muerte del individuo. Sars-Cov-2 es un virus muy peligroso porque todavía no contamos con un tratamiento efectivo tal como, por ejemplo, una vacuna que permita generar una respuesta inmunológica permanente contra el virus. De este modo, es imprescindible evitar la propagación del virus hasta que la comunidad científica pueda desarrollar un tratamiento efectivo.

4 0
3 years ago
What happens to the bunny population if a friend is never added? What happens when you add a friend
pochemuha

While pet rabbits can survive alone without another bunny living with them, they can get very lonely and sad, as rabbits are naturally herd animals. No matter how much human attention they receive, that does not replace attention from a fellow rabbit friend.

When one rabbit is introduced to another rabbit, they may not always get along. However, they will always be very curious when they first meet, and can become close friends after bonding for a while. Keeping close supervision on bunnies when they first meet, however, is very crucial, as they could get into a fight and hurt each other.

5 0
2 years ago
Under which branch we would study both Amoeba and plasmodium​
notka56 [123]

Answer:

Protozoology should be the answer.

3 0
2 years ago
Which details from the text reflect the cultural context of the historical period in which Marco Polo wrote his travelogue? Chec
Novosadov [1.4K]

Answer:

B,C,D are correct answers

3 0
3 years ago
Read 2 more answers
Other questions:
  • In what part of the cell cycle does the DNA make a copy of itself?
    11·1 answer
  • How is the speed of a rivers flow determined??????
    5·1 answer
  • What is the name of organ that produces maltase?<br>and<br>What is the action of maltase?
    7·2 answers
  • A dehydrated patient needs to be rehydrated with an IV of Ringer's solution. At the start of their rehydration therapy, right wh
    6·1 answer
  • One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous short-haired traits (ss). Use a Punnett s
    14·1 answer
  • Ocean water is _____.
    5·2 answers
  • Which is biotic<br>wind<br>iron gate<br>sunlight<br>leaf​
    14·1 answer
  • The genes assort independently.
    12·2 answers
  • Một đoạn AND có số Nu loại A là 250 Nu, loại X là 350 Nu
    6·1 answer
  • Ethical dilemmas raised by dna technology and knowledge of the human genome include?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!