List two advantages and two disadvantages of a having a selective permeable membrane.
Pls help

Answers

Answer 1
1. Bigger and toxic molecules are prevented from entering the cell
2. It’s protects the cell from swelling up due to osmosis

Bad
1. Sometimes density variations cause abnormal changes
2.it’s only good for living cells

Related Questions

The worst kind of self-love is
Altruistic
Narcissistic
Unconditional
Social

which one is it

Answers

Answer:

Narcissistic Love

Explanation:

Answer: narcisism is the only one that makes sense

Explanation:

A force of 5 N is required to increase the speed of a box from a rate of 1.0 m/s to 3.0 m/s within 5 s along a level surface. What change would most likely require additional force to produce the same results?
(SC.6.P.13.3)
reduce the mass of the box
increase the mass of the box
make the surfaces of the box smooth
make the surface of the floor smooth


HELPPP

Answers

Answer:increase the mass of the box

Explanation:

Big brain

Check all that apply as characteristics of myelinated axons. Check All That Apply Myelinated axons transmit nerve impulses via continuous conduction.Myelinated axons transmit nerve impulses via continuous conduction. Myelinated axons transmit nerve impulses in the same manner as unmyelinated axons.Myelinated axons transmit nerve impulses in the same manner as unmyelinated axons. Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter.Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter. Myelinated axons are more energy efficient than unmyelinated axons.Myelinated axons are more energy efficient than unmyelinated axons. Myelinated axons would be unaffected by diseases that attack the CNS.

Answers

Answer:

Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter.

Myelinated axons are more energy efficient than unmyelinated axons.

Explanation:

Neurons are cells that specialize in transmitting messages to each other using a type of electrical signal. These signals carry information from outside your body to the brain, while others are the instructions for the various organs, glands and muscles to carry out functions.

Neurons receive these signals from other neighboring neurons through their dendrites. The signal then travels to the soma of the neuron, which is the main body of the cell, and finally travels down the axon to the synapse (space between the end of a neuron and another cell). The axon is a neuronal extension through which the electrical signal travels, extending from the soma to other neurons.

There may be layers of myelin, which consist of a layer of fat, covering the axons and where they have the function of acting as insulators to help keep the electrical signal inside the cell, which makes it move faster increasing the speed of transmission of the nerve impulse.

1) Myelinated axons transmit nerve impulses via continuous conduction. FALSE. In the axon, nodes of Ranvier are found at regular intervals along the length of the axon in the myelin sheath that surrounds it. These are small spaces that expose the axon membrane to the extracellular fluid and serve to allow the nerve impulse to travel faster, in a jumping manner and with less chance of error.

2) Myelinated axons transmit nerve impulses in the same manner as unmyelinated axons. FALSE. In an unmyelinated axon, the movement of voltage across the membrane is due to ion flux that is limited by the time it takes for sodium ions to diffuse into the axon. Myelinated axons conduct faster because they are shorter than unmyelinated axons. In the latter, transmission is continuous but slower.

3) Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter. TRUE. The action potential conduction jumps from node to node, thereby they need fewer voltage-gated channels. Unmyelinated axons need voltage-gated channels in along the entire axon.

4) Myelinated axons are more energy efficient than unmyelinated axons. TRUE. The rate at which sodium input through one node can depolarize the axon at the next node is related to the current and capacitance across the membrane. Myelinated axons have faster action potential conduction because it jumps from node to node, thereby they use less energy because they don't have to travel the entire length.

5) Myelinated axons would be unaffected by diseases that attack the CNS. FALSE. For example, Multiple sclerosis (MS) is a demyelinating disease of the CNS in which the immune system attacks the myelin sheath or the cells.

The correct statements are:

Myelinated axons transmit nerve impulses via continuous conduction.Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter.Myelinated axons are more energy efficient than unmyelinated axons.

Myelinated axons are nerve fibers that are protected by a covering called myelin. In both the central nervous system (CNS) and peripheral nervous system (PNS), oligodendrocytes and specialized cells known as Schwann cells work together to generate the myelin sheath. This sheath is composed of several layers of lipids, which are fatty substances that wrap around the axon in segments, leaving small spaces known as nodes of Ranvier.

Therefore, the correct options are A, C and D.

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Your question is incomplete, most probably the complete question is:

Check all that apply as characteristics of myelinated axons. Check All That Apply

Myelinated axons transmit nerve impulses via continuous conduction.Myelinated axons transmit nerve impulses in the same manner as unmyelinated axons.Myelinated axons utilize fewer voltage-gated channels than unmyelinated axons of the same length and diameter.Myelinated axons are more energy efficient than unmyelinated axons.Myelinated axons would be unaffected by diseases that attack the CNS.

Click on all the types of reproductive isolating
mechanisms (RIMs). *

Answers

Answer: Behavioral isolation.

Mechanical isolation. ...

Temporal isolation

Question 2 How will the plants that grow from this plant's fertilized seeds compare to the plants grown from its daughter tubers? A They will look the same because the plants grown from seeds are genetically identical to one another but not to the mother plant. B They will differ because only the plants grown from seeds will be genetically identical to the mother plant. C They will look the same because the plants grown from tubers and the plants grown from seeds will both be genetically identical to the mother plant. They will differ because only the plants grown from tubers will be genetically identical to the mother plant 1:53 PM​

Answers

Answer:

I dont have an answer but what is the actual answer

Explanation:Confused (NO ANSWER)

They will look the same because the plants grown from seeds are genetically identical to one another but not to the mother plant. So, the correct option is (A).

What is Fertilization in plants?

Fertilization is defined as the process of sexual reproduction, which occurs after pollination and germination which can be defined as the fusion of male gametes called pollen with female gametes called as ovum to form diploid zygote. It is a physio-chemical process that occurs after pollination of the carpel.

Steps of Fertilization occur in Plants

1. Pollination

2. Germination

3. Fertilization

Fertilization occurs through the pollen tube opening into the ovule through the micropyle and bursting into the embryo sac where the male nucleus fuses with an egg nucleus inside the ovule to form a diploid zygote, which then swells and develops into a fruit. These plants are similar in appearance when grown from seed but with the tuber method they will appear identical but not with the mother.

Thus, they will look the same because the plants grown from seeds are genetically identical to one another but not to the mother plant. So, the correct option is (A).

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What is the answer The nucleus or large central vacuole contains
genetic material of a eukaryotic cell.

Answers

Yes that’s it absolutely

A variety of opium poppy (Papaver somniferum L.) having lacerated leaves was crossed with a variety that has normal leaves. All the F1 had lacerated leaves. Two F1 plants were interbred to produce the F2. Of the F2, 249 had lacerated leaves and 16 had normal leaves. Give genotypes for all the plants in the F1, and F2 generations. Explain how lacerate leaves are determined in the opium poppy. (Section 5.2)

Answers

Answer:

The correct answer is-

F1 -  AaBb (lacerate)

F2 - A_B_; A_bb; and aaB_ (lacerate)

     - aabb (normal)

2. Two genes, with a dominant allele at either or both loci.

Explanation:

The given information gives THE following data:

Dominant: Lancerate leaves - AABB

Recessive: normal leaves - aabb

F1 has - all Lacerated leaves - AaBb

F2 by selfing F1:

         AB               Ab         aB         ab

AB    AABB        AABb      AaBB    AaBb

Ab     AABb       AAbb      AaBb     Aabb

aB     AaBB       AaBb       aaBB     aaBb

ab     AaBb       Aabb       aaBb      aabb

Here, 15/16 = lacerate which is 0.94 which is equal to the value of lacerate given in the question - 249/265 = 0.94

And normal 1/16 = 0.062 is almost same as 16/265 = 0.060

Thus, the genotypes of -

F1 -  AaBb (lacerate)

F2 - A_B_; A_bb; and aaB_ (lacerate)

     - aabb (normal)

propose two ways the body temperature of a sick person can be brought to normal​

Answers

Answer:

ice pack

Explanation:

Answer:

Swimming in cool water, taking a lukewarm bath, or applying cold water to the body can reduce body temperature.

Explanation:

hope this helps you!

Which of the following factors would NOT cause a population decline?
a. disease
b. natural disasters
c. competition
d. predation
e. peace

Answers

Answer:

peace

Explanation:

All the other options are bad. Peace would bring unity.

Natural Disasters-can infect waters,kill peoplw,etc.

Competition-people killing each other or animals to gain something over their opponent

Diseases-kills people,brings anxiousness

Predation-Kills animals. No animals,bad environment

Answer:

peace is the factor that will not cause that

Which choice shows the correct order of the cell cycle?

A. Mitosis --> Cytokinesis --> Interphase

B. Mitosis --> Interphase --> DNA Replication​

Answers

Answer:

correct order of the cell cycle? A

Which of the following best represents the changes to the SARS-COV-2 Virus.
A. adaptation
B. evolution
C. population
D. natural selection

Answers

Answer:

B

Explanation:

Evaluation

aid of diagram describe the biconversion of surfur cycles?​

Answers

Answer:

The sulfur cycle describes the movement of sulfur through the geosphere and biosphere. Sulfur is released from rocks through weathering, and then assimilated by microbes and plants. It is then passed up the food chain and assimilated by plants and animals, and released when they decompose.

the smaller the value of n the lower the energy and the closer to the orbital is to the nucleus true or flase​

Answers

Answer:

True

Explanation:

This is because when you move across the periodic table, the number of atoms increase and the number of energy decrease downward. N represent energy level . n1 is the closest in the nucleus and n7 is the farthest. The farther the n in the nucleus, the higher the energy in the orbital. The smaller the n, the lower the energy and closer to the orbital.

Deadly gas. Carbon monoxide is a colorless, odorless gas that binds to hemoglobin at an oxygen-binding site. Indeed, it binds 200 times as tightly as oxygen, accounting for its toxic nature. Even if only one of the four oxygen-binding sites on hemoglobin is occupied by carbon monoxide and the remaining three are bound to oxygen, oxygen is not released. Explain.

Answers

Answer:

The binding of carbon monoxide (CO) with hemoglobin leads to an R state even in conditions that should produce the release of oxygen. In consequence, CO-hemoglobin binding shifts the oxygen dissociation curve to the left.

Explanation:

Hemoglobin is a globular protein containing four heme groups that can bind to one oxygen each. This protein (hemoglobin) has two conformational states: the T-state, also known as deoxyhemoglobin (a tense state, where lacks O species), and the R-state, also known as oxyhemoglobin (a relaxed, fully oxygenated state). When carbon monoxide binds to hemoglobin, the protein can not release oxygen, shifting the oxygen dissociation curve -which expresses the percentage of oxygen saturation against the partial pressure of oxygen- to the left. Therefore, under CO-hemoglobin binding, the oxygen level in the tissues is reduced.

The table lists some human activities. A student claimed that out of these activities, sleeping is the only activity in which energy is not needed by the cells. Is the claim made by the student correct? Explain.

Answers

Answer:

No

Explanation:

In every action you make you use energy, when you sleep you still have to breathe and regulate tempetaure. If you stopped giving energy to your cells as you sleep you not be able to breathe.

Sparrows produce an average of 5 eggs in each clutch. If there are more than 5. Parents can't adequately feed the young. if there are fewer. Predators may destroy the entire clutch. Which type of selection is this

Answers

Answer:  it would be natural selection

Explanation:

explain why most high pressure air system form at the poles

Answers

Answer:

Subsidence

Explanation:

subsidence is a process where cold temperatures in the polar regions cause air to descend to create high pressure it's basically the difference in temperatures that make the pressure so high because hot atoms expand and becomes less dense and rise while cold air contracts and becomes more dense and falls. hope this helps

Potential energy is
a. Stored energy
b. Energy in motion
c. kinetic energy
d. moving energy

Answers

potential energy is stored energy!!!!

What does this quote mean to you?
Quote: “Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is $tupid.”-Albert

Answers

Answer:

It basically means that everyone is a genius in their own way and everyone has their own skills. If you decide to judge someone on what they cannot do (eg. a fish climbing a tree) rather than what they can do, it's gonna make the person feel $tupid their entire life. Not everyone can do the same thing and not everyone has the same abilities. A fish may not be able to climb a tree, but it can swim well. Just like a bee wouldn't be able to swim, but it can fly.

Why are normally unseen members of the food web, such as soil microorganisms, essential to the nitrogen cycle?

Answers

Answer: Why are normally unseen members of the food web, such as soil microorganisms, essential to the nitrogen cycle? ... Since not all organisms can utilize the nitrogen gas directly, these microorganisms convert nitrogen in different nitrogen compounds, such as ammonia, nitrites, and nitrates. In this article we explore how nitrogen is cycled and the important role of microbes in this cycle. ... Nitrogen is required by all living organisms for the synthesis of organic molecules such as amino acids, nucleic acids and proteins. The Earth's atmosphere contains almost 80% nitrogen gas

Bacteria play a central role:

Nitrogen-fixing bacteria, which convert atmospheric nitrogen to nitrates.

Bacteria of decay, which convert decaying nitrogen waste to ammonia.

Nitrifying bacteria, which convert ammonia to nitrates/nitrites.

Denitrifying bacteria, which convert nitrates to nitrogen gas.

Explanation:

100pts!!! PLEASE HELP quickly!!
1. For today’s weather, it’s up to you to decide where the fronts are located. Draw the fronts on the map. Explain your reasoning.

Answers

As per the weather map of north America the regions of high and low pressure are given along with the cloudiness and range of temperatures

The warm and fold fonts are affected by the cloud covers and hence affect the temperature of the region. The cold front will be along the borer of 40 and 50°. The northeastern region shows maximum cloud cover and a low pressure. As compared to the western and southern region have have high temperatures and experienced high pressure. The winds will below from the high pressure to low pressure and hence create instability cover the north eastern parts.

Hence the fronts are located north east and central zone.

Learn more about the For today’s weather, it’s up to you to decide where.

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almost all frogs undergo external fertilization​

Answers

In most species of frogs, fertilization is external. The male frog grabs the female's back and fertilizes the eggs as the female frog releases them. The sperm and egg die quickly unless fertilization occurs.

Which of the following is not released by sweat glands?
A. Water. B. Salt.c.waste d.oil​

Answers

Answer:

c. Waste

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Explanation:

Hatdog

How “Competition in an ecosystem” is playing a role in life?

Answers

What did you say about the cats in your room haha

Which question cannot be tested with Scientific investigation?

Answers

Answer:

air

Explanation:

Which type of organism must be at the bottom of food chains because of its structures for obtaining food energy?
A
Insects
B
Mammals
C
Plants
D
Fungi

Answers

I believe the correct answer is C. Plants.

Hope this helps! :)

Which example best represents the results of mitosis?

Answers

d) two daughter cells are identical to their parent

what is intrapersonal communication

Answers

The way a communicator’s internal use language or their thoughts

Will give brainliest
Which best describes how limiting factors affect all the species in this ecosystem?

Answers

Answer:

Its a COYOTE

Explanation:

What will most likely increase if there is a high death rate?

Answers

Answer:

Emigration

Explanation:

If there is a large number of deaths, then the population would move onto another area to find a mate, more food, and to be together to protect themselves from danger.

Hope this is what you were looking for, lmk if I can do anything else.  

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