what cell structure is largely responsible for controlling the entry and exit of substances into or out of the cell?​

Answers

Answer 1

Answer:

plasma membrane

Explanation:

The plasma membrane is also known as the cell membrane. It is the boundary between the internal components of a cell and its external surroundings. It controls the entry and exit of substances into or out of the cell and thus, facilitates the exchange of substances between the cells and their external environment.


Related Questions

What do all organisms have ?

Answers

Answer:

All organisms are capable of reproduction and development

Answer:

Organs, If thats not correct than cells

Explanation:

If you have a concern about fluoride in your drinking water, how do you get more information?

Answers

Answer:

Contact the Centers for Disease Control and Prevention (CDC).

Explanation:

hello there.
Explain that different sequences of amino acids give different shapes to protein molecules

Answers

Explanation:

The sequence of amino acids in the chain determines how the chain will fold up to make the protein, so different proteins have different three-dimensional shapes. ... This is because proteins form attachments and interact with many other molecules and structures inside organisms.

Diffusion is a passive process that accounts for the movement of respiratory gases across the capillary membranes of alveoli.
True
False​

Answers

Answer:

True

Explanation:

Diffusion is a passive process (no energy required) in which the substance such as liquid and gases moves from an area of high concentration to an area of low concentration.

During respiration, carbon dioxide diffuses from the blood into the alveoli and oxygen diffuses from alveoli to blood across the respiratory membrane. The partial pressure of oxygen is low in the blood of the pulmonary capillaries and high in the alveoli. so diffusion allow movement of oxygen across the respiratory membrane from the alveoli into the blood.

Hence, the given statement is true.

13. Ranchers lobbied the government to eradicate wolves from Yellowstone National Park. Five years later the deer population had increased fivefold. The following winter 70% of the deer starved to death. Explain why this was bound to happen.

Answers

Answer: The overgrowth in deer population led to a food shortage.

Explanation:

Since the eradication of the wolves, the deer had no predator to keep their total population in check. Due to the vast amount of deer the food in the area was being eaten at a faster rate. Most of the deer died do to their environment not being capable of feeding that many deer.

(I hope this helps! I tried my best.)

*Penguins are adapted to live in the antarctic. Which of the following is
NOT true?

A)The dark coloured feathers reflect heat from the sun
B)Their webbed feet make them powerful swimmers
C)They have overlapping feathers to waterproof them
D)They have thick skin and lots of fat to keep them warm

Answers

Answer:

B their webbed feet make them powerful swimmers

The table below compares three galaxies the information about galaxies is correct in

Answers

Answer:

A. Column 1

Explanation:

The information in column 1 is correct for all galaxy but information in coulmn 2 and Column 3 has some incorrect information about Elliptical galaxy.

Information about spiral galaxy is correct in all three columns that spiral galaxy has pinwheel shape and made up of several stars, dust and gas particles hold together by gravitational force.

Elliptical galaxy has round or oval shape and made up of mostly old stars and do not have much gas and dust particles which are hold together by gravitation force and not by electrical force.

Irregular galaxy has no defined shape as of spiral and elliptical and are made up of large amount of gas and dust and forms new stars which allow them to look brighter.

Hence, information in coulmn 1 is correct for all the galaxy.

Answer:

Column 1

Explanation:

A scientist is tracking object orbiting the sun that is found between Mars and Jupiter which additional feature can be used to determine the object is an astroid

Answers

Answer:

The options are not given. Here are the options;

produces a coma

has an irregular shape

has a tail of ice and dust

produces a streak of light.

The answer is has an irregular shape.

Explanation:

Asteroid are small objects that are too small to be called planets that revolve round the sun. They are smaller in size. The mass of the asteroids is less than the size of the Earth's moon.

Asteroids are leftovers from the formation of our solar system about 4.6 billion years ago. Earlier, the formation of Jupiter prevented any planetary bodies from forming in the gap between Mars and Jupiter, which make the small objects that were present to collide with each other and fragment into the asteroids.

Asteriods produce irregular shape.

Answer:

the answer is has an irregular shape or b

Explanation:

NASA’s Kepler mission found evidence of several potentially habitable exoplanets, raising the possibility that life may have evolved independently outside of our solar system. If NASA found a novel lifeform, we would expect it to use energy molecules based on similar principles as lifeforms on Earth. The organism would likely use molecules with _____________ bonds. It might use two separate molecules, one serving as a rapidly utilizable energy currency and another molecule serving as long-term energy storage.
a. high energy.
b. low energy.
c. hydrogen.
d. electrostatic

Answers

Answer:

c. hydrogen.

Explanation:

Earth is full of different substances. Hydrogen bonding is  a partial inter molecular bonding between a lone pair and an electron rich donor. Some of the most important molecules here on earth are held by hydrogen bonding.

Hydrogen bonding is useful in inorganic and organic molecular combination.

Which fossil fuel should be available for the longest time if current usage continues?

Answers

Coal
Coal and natural gas are expected to last a little longer. If we continue to use these fossil fuels at the current rate without finding additional reserves, it is expected that coal and natural gas will last until 2060. However, the consumption of natural gas grew considerably last year, rising by 4.6%.

Mutations can occur in different cell types, what are these two types called?

Answers

Answer:

Germ cell

Somatic cell

Explanation:

If a gene is altered in a germ cell, the mutation is termed a germinal mutation.

If a gene is altered in a somatic cell, the mutation is termed a somatic mutation.

Which correctly lists the three processes that are affected by freeze and thaw cycles?
O creep, landslide, and deposition
O deposition, creep, and weathering
O landslide, slump and deposition
O slump. weathering, and creep

Answers

Answer:

Slump creep and weathering

Explanation:

Freeze-thaw weathering occurs when water from rainfall or melt snow penetrate into cracks and the temperature is lowered than a liquid and freeze. The process where exposed rock is broken. It gives the landscape a new shape.

When the freeze occur it expands the rock and when the temperature increases above freezing the thaw ice further penetrate into the crack.

Weathering the breaking down of rock into smaller frequent affects freeze-thaw as it allows water to penetrate into cracks.

Slump is the downward movement of materials from rock surface, it allows material to move alone the rock surface liquid such as water can be allowed to move and penetrate cracks. crack rock fragment that results from freeze thawing are deposited at rock base and form smaller rocks

Creep is also the movements of weathered materials down the slope of rock surfaces. It could result from freeze thaw.

Answer:

d

Explanation:

Based on the objective you should feel comfortable calculating expected genotype frequencies when given observed allele frequencies. You should also be able to compare expected genotype frequencies from HWE to observed frequencies and determine if evolution is occurring. Here's a sample problem. You can do this without a calculator! Let's take the noob gene, a gene with two known alleles that determines feather color in the eastern lark. The two alleles, let's call them delta and gamma, can be sequenced. In fact, looking at a population in southern GA, you discover that 60% of the alleles in the population are the delta allele. So question 1, what is the percentage of the gamma allele in the population

Answers

Answer:

40% is the percentage of the gamma allele in the population.

Explanation:

Available data:

Two alleles, delta and gamma60% of the alleles in the southern GA population are the delta allele

What is the percentage of the gamma allele in the population?

According to Hardy-Weinberg, the allelic frequencies in a locus are represented as p and q, referring to the allelic dominant or recessive forms. The genotypic frequencies after one generation are p² (Homozygous dominant), 2pq (Heterozygous), (Homozygous recessive). Populations in H-W equilibrium will get the same allelic frequencies generation after generation. The sum of these allelic frequencies equals 1, this is p + q = 1.

In the same way, the sum of genotypic frequencies equals 1, this is

p² + 2pq + q² = 1

Being

p the dominant allelic frequency, q the recessive allelic frequency, p² the homozygous dominant genotypic frequency q² the homozygous recessive genotypic frequency 2pq the heterozygous genotypic frequency

If the percentage of delta allele in a population is 60%, this means that its frequency is 0.6. By clearing the equation p + q = 1, we can calculate the gamma allele frequency. This is:

p + q = 1

0.6 + q = 1

q = 1 - 0.6

q = 0.4

Then the percentage of gamma allele in the population is 40%.

We can also think about it like this:

If the sum of the allelic frequencies equals 1, then 1 is 100% of the allelic frequencies. And if the percentage of delta allele in a population is 60%, then 40% is the percentage of gamma allele.

A study from the National Institutes of Health states that the human body contains trillions of microorganisms that make up 1% to 3% of the body's mass. Use this information to estimate the average mass of a microorganism.

Answers

Answer:

If the mass of the human body is 60 kg so the average mass of microorganism is 1.2 kg.

Explanation:

If we suppose the mass of human body is 60 kg and we know the percentage that is 1 to 3% so we will take the average microorganism mass of which is 2%. So by doing multiplication of 60 with 2 and then divided by 100, we get 1.2 kg. The reason for dividing by 100 is that the average mass present in percentage form so for converting the percentage into standard form we have to divide it by 100. So we conclude that in every human with a mass of 60 kg have 1.2 kg microbes present in their body.

What happens during G2 phase?

Answers

Answer:

Gap 2 (G2): During the gap between DNA synthesis and mitosis, the cell will continue to grow and produce new proteins.

Answer provided by CELLS Alive

Are zoos beneficial to animals

Note:This is a Debate​

Answers

Answer:

I think they are not beneficial to animals

Explanation:

because

1.they are not free to live for themselves , find mates and have children

2.they are there so as the people can get money

Answer:

Proposition:

Zoos are beneficial  for animals because :

- Keeps them away from poachers

- Medical care is provided

- protects them from predators

Opposition:

- in captivation most animals get depressed

- for doing tricks they are left starving

- they are kidnapped from the jungles away from the parents

(THE POINTS DEPEND ON THE TYPE OF DEBATE (THW;THBT;THR;THS))

(I have given it in general)

HOPE IT HELPS :)

PLEASE MARK IT THE BRAINLIEST!

If a 160lb individual has 28% body fat how much of their body weight is fat in lbs.?

Answers

Answer:

44.8 lb

Explanation:

160 lb * 0.28= 44.8 lb

Answer:

44.8 lb

Explanation:

160 x 0.28 = 44.8

Predict which one of the following organisms will have the highest percentage of unsaturated fatty acid chains in their membranes: Group of answer choices thermophilic bacteria desert iguana humans antarctic fish

Answers

Answer:

Humans

Explanation:

Humans are bigger than most beings and some people are extremely obese.

The organisms that have the highest percentage of unsaturated fatty acid chains in their membranes are ANTARCTIC FISH.

Unsaturated fatty acid chains have one or more double bonds, while saturated fatty acid chains do not contain any double bonds.

When the temperature decreases, the composition of the phospholipids bilayer membrane becomes more unsaturated to be able to maintain different properties such as homeoviscosity.

In consequence, membrane lipids exhibit the highest percentage of unsaturated fatty acid chains during cold acclimation.

In conclusion, the organisms that have the highest percentage of unsaturated fatty acid chains in their membranes are ANTARCTIC FISH.

Learn more in:

https://brainly.com/question/3007736

Select the correct answer.
Which type of energy is thermal energy a form of?
A.
chemical energy
B.
kinetic energy
C.
magnetic energy
D.
potential energy

Answers

Answer:

right answer is

B

Kinetic energy

The answer is B kinetic energy

List 3 commercial uses of sponges

Answers

The Ceramic industry. It is used for finishing on the lathe machine. ...

Home decorating/painting. The sponge buffering is a colouring technique used in DIY on furniture and accessories and on large surfaces such as walls and ceilings. ...

Footwear Manufacturers.

Answer:

Some commercial uses of sponges are

Personal hygiene: The sponge has many natural properties. It retains water, does not drip and releases water only when slight pressure is applied. Many people prefer to purchase the natural sea sponge because of its characteristics for deep cleansing the face, its ecological properties and most of all does not give allergic reactions.

Decor : In private homes, in hotels and on yachts, it is very common to see displays of natural sponges as part of furnishing.

Painting: The sea sponge is used in the restoration of art, for dry cleaning of frescoes and paintings

Hope this helps!

-Quinn <3

Which types of mutation are most damaging to an organism?
a) Substitution & Deletion
b) Deletion & Insertion
c) Insertion & Substitution

Answers

[tex]answer \\ = deletion \: and \: insertion \\ explanation \\ insertion \: and \: deletion \: results \: in \: a \: \\ frame \: shift \: that \: changes \: the \: \\ reading \: of \: subsequent \: codons \: and \: \\ therefore \: alters \: the \: entire \: amino \: \\ acid \: sequence \: that \: follows \: the \: \\ mutation ,insertion \: and \: deletions \: \\ are \: usually \: more \: harmful \: than \\ a \: substitution \: in \: which \: a \: single \\ amino \: acid \: is \: altered. \\ hope \: it \: helps[/tex]

You are running an experiment to study seed germination and accidentally left a dish of seeds covered with a little water in a totally dark room. When you return a few days later, you notice that the seeds have sprouted long roots and long shoots. What was the source of most of the matter that makes up these roots and shoots?A. oxygen in the airB. carbon dioxide in the airC. water in the dishD. glucose in the seed

Answers

Answer:

D. glucose in the seed

Explanation:

Plants generally make their food through the process of photosynthesis in the presence of sunlight by utilizing carbon-dioxide and water and produces oxygen and carbohydrate.

But due to the absence of sunlight, plant will be unable to use carbon dioxide and water for photosynthesis and oxygen is a by-product.

So the reason of seed germination is the presence of glucose in the seed. Seeds generally germinate through the process of inhibition, that require uptake of water. Glucose works as energy source in humans and plants as well. sugar or glucose allow the seed to utilize the water and help foster its growth.

Hence, the correct option is D. glucose in the seed.


time._______________
is the relative temperature of a region over
O C. rain pattern
O B. climate
O A. weather
O D. wind currents​

Answers

Answer: choice B. Climate

Explanation:

Climate is the relative temperature of a region over time.

While doing research on deep-sea vents, you discover a very simple new life form. After some initial analysis, you find that this life form contains small fragments of DNA, small complementary RNA fragments, and proteins. Fortuitously, you collected two strains, one that is purple and one that is yellow. You wish to discover which of those three molecules could be the genetic material. You heat-kill some of the purple life form and subject three different homogenized samples to different enzymes: DNase, RNase, or protease. Which treated sample(s) will transform yellow into purple IF RNA is the genetic material

Answers

Answer:

The one treated with DNase and protease

Explanation:

The samples that will transform yellow into purple if RNA is the genetic material are the ones treated with DNase and protease respectively.

The treatment of the heat-killed sample of the purple life with DNase will ensure that the DNA in the sample becomes degraded while treatment with protease will ensure that protein is degraded, leaving only the RNA. Thus, the RNA can be taken up by the yellow life form and become transformed into purple if indeed RNA is the genetic material.

The sample treated with RNase cannot transform the yellow life into purple because the RNase catalyzes the degradation of RNA into smaller components.


Nucleic acids and carbohydrates are both types of what?
A. Macromolecules
B. Proteins
C. Elements
D. Atoms
SUBM

Answers

The answer is A. macromolecules

There are 4 types of macromolecules; lipids, proteins, carbs and nucleic acids

Colocar la opción correcta.


a) La caña Colihue:


• Es un ejemplo de individuo y de organización Ecológica


• Es un ejemplo de organismo y pertenece a la organización Biológica


• Es un ejemplo de comunidad


• A y B son correctas



b) Las flores y los tallos:


• Son ejemplos de órganos


• Son ejemplos de organelas


• Son ejemplos de células


• Ninguna es correcta



c) El H20 es un ejemplo de:


• Atomo


• Molécula


• Organela



d) El nitrógeno es un ejemplo de:


• Molécula


• Atomo


• Partícula subatómica



e) El Bosque es un ejemplo de:


• Población


• Ecosistema


• Células vegetales


¡Ayuda, por favor!

Answers

Answer: A y B son correctas

Explanation:

what is evaporation​

Answers

the process of turning from liquid into vapor.

Answer:

Evaporation is the process of turning liquid to vapor form.

The best experimental design:______
a. alters only one condition between the controls and the experimental condition
b. includes a large sample size for each condition
c. includes a control

Answers

Answer:

The correct answer is option d. "includes a large sample size and a control, and alters only one condition between the controls and the experimental condition".

Explanation:

The correct answer for this question is missing, which is option d. "includes a large sample size and a control, and alters only one condition between the controls and the experimental condition". The best experimental design includes all the options proposed: it includes a large sample size to ensure that the data is statistically relevant; a control to verify that the results are valid and are not obtained from other untested conditions; and it alters only one condition at the time to ensure the existence of the relation between condition and results.

What cell type are involved in the secretion thyroglobulin ?

Answers

by thyroid epithelial cells and secreted into the lumen of the follicle - colloid is essentially a pool of thyroglobulin.

By thyroid epithelial cells and secreted into the lumen of the follicle - colloid is essentially a pool of thyroglobulin.

What is Thyroglobulin?

The amount of thyroglobulin in a sample of your blood is measured by a thyroglobulin test. Your thyroid produces a protein called thyroglobulin. A little gland in your neck with a butterfly form is your thyroid.

It produces hormones that regulate a variety of bodily functions, such as your heart rate and how quickly you burn off calories from food.

One kind of test for tumor markers is the thyroglobulin test. In reaction to cancer in your body, cancer cells and/or normal cells produce molecules known as tumor markers. Small levels of thyroglobulin are typically released into your bloodstream by your thyroid.

Therefore, By thyroid epithelial cells and secreted into the lumen of the follicle - colloid is essentially a pool of thyroglobulin.

To learn more about thyroglobulin, refer to the link:

https://brainly.com/question/14619705

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Shortly after a stream dried up, you noticed a change in the field mouse population coat color variation. When the stream was flowing, there were two populations, one with darker coats and one with lighter coats. After the stream dried up, mice with darker coats were being born into the lighter coat population and vice versa.

a. True
b. False

Answers

Answer:

a. True

Explanation:

When the stream dried up darker coat mice were seen into the lighter coat population and vice versa because of the natural selection process.

Mice change their coat color by adapting the changes in the stream flow and evolve their coat either dark or light that provides camouflage so predators won’t see them and they are able to survive in the environment. Mice have the advantage of surviving long and they are able to pass their genes to the offspring.

Hence, the given statement is true.    

Other Questions
5.Mevhibe has advanced rapidly in the corporate world, despite her middling scores on such tests as the WAIS-IV, the SAT, and the GRE. Sternberg would suspect Mevhibe of high ________ intelligence a can contains 15/16 pound of vegetables on serving these vegetables weighs 1/4 pound what is the total number of serving of vegetables in the can Find the degree of each polynomial. For the following compound, determine each element and if the element is a metal or nonmetal. Also determine if the compound has an ionic, covalent, or metallic bond:NaClSO2CaOHFNO2H2O Who is being referred to directly as being destructive in the DOI? which organ does the digestion of protein to take place What is the nth term in the sequence: 15, 22, 31, 42, 55 Which of the following expressions represents the verbal description below?the cube of the difference of 4 times x and 6 divided by 2 times the sum of x and 1 How many tons is 22,000 pounds? Simplify:(3x3+5x29x2)(2x3+3x2x3)?A. x3+8x28x+1B. x3+8x210x5C. x3+2x28x+1D. x3+2x210x+1 2 PointsWhich is a kingdom?O A. ProkaryaB. ProtistaC. MammaliaO D. Chordata Where do you find the molar mass of an element Initially when 1000.00 mL of water at 10oC are poured into a glass cylinder, the height of the water column is 1000.00 mm. The water and its container are heated to 70oC. Assuming no evaporation, what then will be the depth of the water column if the coefficient of thermal expansion for the glass is 3.8*10-6 mm/mm peroC ? Given a function, describe how to find the average rate of change over a given interval. Trio Company reports the following information for the current year, which is its first year of operations. Direct materials $15 per unit Direct labor $15 per unit Overhead costs for the year Variable overhead $3 per unit Fixed overhead $120,000 per year Units produced this year 20,000 units Units sold this year 14,000 units Ending finished goods inventory in units 6,000 units1. Compute the cost per unit using absorption costing and then using variable costing2. Determine the cost of ending finished goods inventory using absorption costing and then using variable costing3. Determine the cost of goods sold using variable costing and then using variable costing If the first term of an AP is 'a' and the common difference is 'd', then the sum of n terms of an AP is _______ I NEAD HELP ASAP The Lewis family dined at a restaurant. Their bill came to $52, and they plan on leaving a 19% gratuity. This means that the total amount they will pay is 119% of the bill. Which calculation results in the best estimate of the total amount they will pay in dollars? Assume there is no tax. (50) (110 percent) = (50) (100 percent + 10 percent) = (50) (100 percent) + (50) (10 percent) = (50) (1.0) + (50) (0.1) = 50 + 5 = 55 (50) (120 percent) = (50) (100 percent + 20 percent) = (50) (100 percent) + (50) (20 percent) = (50) (1.0) + (50) (0.2) = 50 + 10 = 60 (60) (110 percent) = (60) (100 percent + 10 percent) = (60) (100 percent) + (60) (10 percent) = (60) (1.0) + (60) (0.1) = 60 + 6 = 66 (60) (120 percent) = (60) (100 percent + 20 percent) = (60) (100 percent) + (60) (20 percent) = (60) (1.0) + (60) (0.2) = 60 + 12 = 72 In the reaction, HCl + H2O produces H3O + Cl, what is the conjugate acid Explain how you can use the inscribed angle theorem to justify its second corollary, that an angle inscribed in a semicircle is a right angle The probability of obtaining a defective 10-year old widget is 66.6%. For our purposes, the random variable will be the number of items that must be tested before finding the first defective 10-year old widget. Thus, this procedure yields a geometric distribution. Use some form of technology like Excel or StatDisk to find the probability distribution. (Report answers accurate to 4 decimal places.) k P(X = k) 1 .666 Correct 2 3 4 5 6 or greater