Why is the cell membrane said to be semipermeable?

Answers

Answer 1
The cell membrane is semipermeable because substances can not cross it indiscriminately. Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot. Water can pass through between the lipids.

Related Questions

What is the term for the remains, imprints, or traces of living things from a previous geological age? (1 point)

A sedimentary rocks
B strata
C radioactive decay
C fossils

please help

Answers

Answer:

the is D

you put 2 Cs so it is the last one

Explanation:

hope this helps

Which of the following are influenced by the size of a population? (Choose all that apply)

Answers

Answer:

B,C, and A

Explanation:

Answer: The correct answers are "susceptibility to disease" and "genetic diversity"

Explanation:

I took the test

Which of these sets out a global action plan to put the world on track to avoid climate change by limiting global warming to well below 2 degrees celsius?

A: Clean Water Act
B: Paris Agreement
C: IUCN Red List
D: Occupational health and safety Act

Answers

Answer:

It's Paris agreement  

Explanation:

Hope it helps !!! Thank You !!!

You are approaching the end of the semester and have decided to not go shopping during finals to reduce having to deal with leftover food. As a result, you indulge in a much-needed meal at the all-you-can eat buffet. Which of the following will happen after indulging in a high caloric meal?

Answers

Answer:

You will be okay after eating a high-calorie meal as long as it is not eaten often. However, eating more calories than calories that can be burned can cause weight gain.

Which length of waves are MOST
harmful to humans?
Pls help!

Answers

Answer:

Short waves

Explanation:

Gamma rays are used to kill cancer cells, think of how strong it would have to be to do that, we use short waves every day, visible light isn't dangerous at all. Infrared light can be used to see in the dark so it isn't that dangerous.

please mark brainliest  :)

In boiling water, water molecules move apart and escape tin the form of water vapor. The process is called __

Answers

Answer:

Evaporation is the process where water molecules separate and begin to vaporize. Evaporation can be caused by excessive heat to the water.

what's the meaning of deamination

Answers

to remove the amino group from (a compound)
Deamination is the opposite of amination it’s a type of post-translational modification in which an amine group is removed from a protein.

myth: mammals and plants don't belong in the same domain
Fact:
Evidence
I need two pieces of evidence please helppp

Answers

Answer:

fact: Mammals and plants do belong in the same domain
evidence: Domains classify by its amount of cells and the complexity of its cells.

Explanation:

Both plants and animal cells are eukaryotic, so they belong in the domain Eukarya. Eukaryotes have a nucleus in their cells and plants and animals do.

Answer:

They are in the same domain because they are in Domain Eukarya, the domain for all plants and animals. They also have similar cell complexity, and are living things.

in what order does the tRNA move through the binding sites of a ribosome

Answers

Answer:

A-->P--->E

Explanation:

If the ice melts, exposing land, there will be less ice to reflect heat and more land to absorb heat. How would this affect Earth's albedo?

A: Increase Earths albedo
B: Decrease Earths albedo
C: Stay the sam
D: Greatly increase earths albedo

Answers

Answer:

it will Increase the Earths albedo

HELP ASAPIf the following mRNA strand were produced during transcription, what amino
acids would be found in the
protein?
CAUGGUGGCUACGGG
The table below shows which amino acid results from each codon.

• A. Histidine-glycine-glycine-glycine
• B. Glycine-histidine-histidine-tyrosine-histidine
• C. Glycine-histidine-glycine-glycine
• D. Histidine-glycine-glycine-tyrosine-glycine

Answers

Answer:

D

Explanation:

To translate mRNA to protien you start at the beginning of the strand and read the first 3 letters then identify which amino acid it is by looking at the chart. You repeat this process until you have reached the end or until there are no more pairs of 3 letters.

So we have the strand CAUGGUGGCUACGGG

the first the letters are CAU

if we look at the chart CAU corresponds to Histlidine

Repeating this process with the rest of the mRNA strand we should get

Histidline - Glycine - Glycine - Tyrosine - Glycine

the answer is D.

I don’t know how to do it so I need help

Answers

Explanation:

I can help, but where is the question

Can you please insert a image for this

What are the two
main things that determine
climate?

Answers

Answer:

Hi.

↬ temperature and precipitation

Explanation:

↬ The yearly average temperature of the area is obviously important, but the yearly range in temperature is also important. Some areas have a much larger range between highest and lowest temperature than other areas.

Which feature of this animal's body is not an adaptation for life in its habitat?

Answers

Answer:

It's eyes is correct

Explanation:

its eyes helps it see, therefore it's not an adaptation like it's flippers

hope this helps <3

Pasteurized liquid, frozen, or dry egg products shall be substituted for raw shell eggs whenever?​

Answers

Pasteurized liquid, frozen, or dry egg products may be substituted for raw shell eggs when ;  preparing of foods such as hollandaise sauce

Pasteurized eggs

Pasteurized eggs are prepared by heating dired egg whites for a period using the the required temperature. when prepearing certain konds of meals requirimg the use of eggs pasteurized liquid,frozen or dry eggs are better suited than raw shell eggs. and one of such meal is hollandaise sauce.

Hence we can conclude that Pasteurized liquid, frozen, or dry egg products may be substituted for raw shell eggs when ;  preparing of foods such as hollandaise sauce.

Learn more about Pasteurised eggs : https://brainly.com/question/17216457

#SPJ1

.
The periosteum is a
a place for storing fat cells.
b. location for red blood cell production.
c. tough layer of connective tissue surrounding a bone.
d. latticework structure that adds strength to the bone.

Answers

C, or a tough layer of connective tissue surrounding a bone

What are the functions of the integumentary system?

Answers

Answer:

Its main function is to act as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature.

Explanation:

What are 3 traits of mammals

Answers

Answer:

Mammary glands, milk production, More complex brain

Explanation:

Just did it

Explanation:

Three traits of mammals are :-

1) they do not produce egg like others do

2) they are warm blooded

3) they give milk or feed milk to their children

Hope this helps you

have a good day :)

An excess of greenhouse gases is warming the oceans. Which of the following describes an effect of excess greenhouse gases?

Sea levels will decrease due to thawing glaciers and ice sheets.

Organisms that live in colder temperatures will continue to thrive in their environment

Melting of glaciers and ice sheets will cause coastlines to shrink and increase flooding.

The increase in temperatures will prevent disease vectors from spreading to other regions.

Answers

Answer:

Melting of glaciers and ice sheets will cause coastlines to shrink and increase flooding.

Complete the sentence.

greenhouse gasses (blank) energy, slowing or preventing the loss of heat to space.

Answers

greenhouse gasses absorb energy, slowing or preventing the loss of heat to space.

how to improve rate of photosynthesis at 5 degree c to get more precise value for the optimum temperature.

Answers

increase the amount of light that the leaf is exposed to?

Giraffe ancestors with slightly longer necks were able to reach taller food sources; these organisms survived longer and produced more offspring with the favorable variation
A: artificial variation
B: natural variation
C: both

Answers

Answer:

B

Explanation:

Its natural variation because by random mutation some giraffe had longer necks than others. However these longer necks were more favourable and allowed giraffe to survive to reproductive success. Hence the longer necked giraffes had more offspring and this randomly generated trait was passed on to more and more giraffe offspring.


What is a biodiversity hotspot?
blodiversity hotspot is a region that has lost at least _
percent of its original habitat.

Answers

A biodiversity hotspot may be defined as a region that comprises a considerable level of biodiversity that is intimidated by human habitations and possessions.

What do you mean by Biodiversity?

Biodiversity may be defined as the sum total of all the varities of living organisms on the earth's surface.

A biodiversity hotspot is a region that has lost at least 70% of its original habitat.

Other criteria for determining biodiversity hotspot are:

A high degree of threat, exploitation, and biodiversity. A high degree of endemism.The area should support more than 1500 endemic species of flowering plants.

Therefore, it is well described above.

To learn more about Biodiversity, refer to the link:

https://brainly.com/question/11542363

#SPJ1

Answer:

A biodiversity hotspot is a region that has lost at least 70 percent of its original habitat

Explanation:

I got 100% on the post test.

Please help!

Which of the alternative energies we discussed in class does not usually rely on a turbine generator?

tidal energy

geothermal energy

solar

biomass

Answers

Answer: Solar

Explanation:

There are many different types of electricity generators that do not use turbines to generate electricity. The most common in use today are solar photovoltaic (PV) systems and internal combustion engines. Solar photovoltaic cells convert sunlight directly into electricity.

How does stratospheric ozone vary on Earth? (1 point)
O Levels are higher near Antarctica than near the Arctic.
O Levels are higher near the equator than near the poles.
O Levels are higher near the equator than near the Arctic.
O Levels are higher in mid-latitudes than near the equator.

Answers

The stratospheric ozone vary on Earth because the levels are higher near the equator than near the poles.

What is stratospheric ozone?

Stratospheric ozone is an atmospheric layer of the earth that naturally filters the ultraviolet radiation from the sun.

High concentrations of stratospheric ozone are found at altitudes from 26 to 28 km of the equator and from about 12 to 20 km toward the poles.

Therefore, the stratospheric ozone vary on Earth because the Levels are higher near the equator than near the poles.

Learn more about equator here:

https://brainly.com/question/16876469

#SPJ1

Answer:b

Explanation:

In a word, what caused the Bubonic Plague to spread to Europe, Asia, and Africa? A. religion B. warfare C. trade D. exploration​

Answers

Answer:

I think the answer is C.

Explanation:

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA. Why?
A) The DNA in nerve cells undergoes mutations making them different from the DNA in skin cells.
B) The genes in skin cells are transcribed but not translated as genes of nerve cells.
C) The genes expressed in skin cells may not be expressed in nerve cells and vice versa.

Answers

Answer:

I think the correct answer from the choices listed above is option A.

Explanation:

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA because the genes expressed in inskin cells may not be expressed in nerve cells and vise versa.

Describe Homologous structures (definition, examples). Describe Analogous structures (definition, examples).

Answers

Answer:

Homologous structures vs.

For example, the wings of bird, bat, and insect are analogous structures. The contrasting wing anatomical features of these animals indicate that they are unrelated. The flippers of a whale and the fins of a fish are another homologous structures example.

Explanation:

If Cystic Fibrosis runs in your family's genetics then
what could a Punnett square help you with?

Answers

Answer:

For(thinking about dominant and recessive alleles)

Explanation:

what is the full form of HIV


[tex]\huge{\color{black}{\fbox{\color{pink}{\colorbox{pink}{\color{red}{Question}}}}}}[/tex]​

Answers

Answer:

HIV Stands for Human Immunodeficiency Virus

Other Questions
I need help ASAP, will be giving 100 points!I need help on unseen poetry, my exam is in a couple of days D: A TV has a listed price of $530.99 before tax. If the sales tax rate is 7.25%, find the total cost of the TV with sales tax included.Round your answer to the nearest cent, as necessary. The resistance of a wire of length 100cm and diameter 0.3m is found to be 30 ohm's.calculate:(1) resistivity (2) conductivity (3) what length of the wire will produce 5 ohm's resistance. PQRS is a parallelogram. Angle QSP = 47. Angle QSR = 24, PST is a straight line. At LaGuardia Airport for a certain nightly flight, the probability that it will rain is 0.14 and the probability that the flight will be delayed is 0.06. The probability that it will not rain and the flight will leave on time is 0.82. What is the probability that it is raining and the flight is delayed? Round your answer to the nearest thousandth. WILL MARK THE PERSON WHO ANSWERS THIS RIGHT BRAINLIEST Reward: Brainliest+30 Points If RightShould Teens Be Allowed To Play Dangerous SportsYou have previously written the introduction to your argument. Now you will write the body paragraphs to continue your argument.Be sure to use the information you previously wrote in your Argument Organizer.In three body paragraphs, remember to include:BODY PARAGRAPH 1: a strong reason for your claim and researched fact to support your claimBODY PARAGRAPH 2: another strong reason for your claim and researched fact to support your claimBODY PARAGRAPH 3: a counterclaim against your argument, a rebuttal, and a researched fact to support your rebuttalTransitionsSignal phrases to indicate quotes or facts that are not your ideasWrite three or more complete sentences in each paragraphWrite in formal style using the third person point of view.Use correct grammar, punctuation, and spelling. Brainliest to the correct answer, but answer ASAPONLY answer if you are 100% sure so don't say "I think" or "It might be" work out 85cents as a percentage of $2.03 15 POINTS, please complete this problem and explain to me how you did it lol, there's so many of these in my homework and I'm in desperate need of help A circuit has a current of 2 A. If the resistance in the circuit decreases to one-fourth of its original amount while the voltage remains constant, what will be the resulting current? 0. 5 A 2 A 4 A 8 A. Triangles- Angles & Classifying Instructions in photo! il pensait qu'il partirait tout l't et un verbe a vnement du passe ou un verbe a vnement postrieur a venir Write an exponential function in the form y=ab^x that goes through points (0, 14) and (6, 896) Please help me with my measurement 2 last questions.Edit : please read 8 carefully. Does anyone loves math TvT There are what plants than animals. explain why the percentage of people with $300,000 or more increases so substantially across the age groups. Write the counts for the rhythms shown below: Use the method of symmetry to find the extreme value of each quadratic function and the value of x for which it occurs.f(x)=(x-3)(x+8a) x-intercepts are _________b) midpoint of the x-intercepts is ___________c) the extreme value is _______________d) f(_) = ______________ Paradoxes explain the duality of human life. For example, the saying you have to be cruel to be kind rings true to every parent: if a child never hears no or is never punished, he or she will be a monster. Think about the paradoxes in Romeo and Juliet. What might Shakespeares message be through all the oppositions he presents to us? Love is wonderful and agonizing; dreams are pleasing and terrifying; parting is sweet and sorrowful; plants make healing medicine and killing poison; characters are affectionate and salacious, wise and foolish, sensitive and silly. Is Shakespeare sympathetic or critical of our contradictory human impulses? Write a paragraph exploring what message you glean from all these paradoxes. Begin with a claim as a topic sentence.