Describe two primary functions of the cell membrane.

Answers

Answer 1

Answer:

Explanation:

The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.


Related Questions

5.) What are the small sacs in an ovary that contain a developing egg cell?
6.) When does a woman run out of eggs? ​

Answers

Answer:

5.) What are the small sacs in an ovary that contain a developing egg cell?

A.) Follicle

6.) When does a woman run out of eggs?

A.) your ovaries cease to make estrogen, and you will go through the menopause. At the age of 45 to 50.

-TheUnknownScientist

Answer:

mast cell and nerve cell

what stores groundwater

Answers

Answer:

An aquifer is a rock layer that stores groundwater and allows the flow of groundwater.

An organism that survives an epidemic
would be an example of ...... (check your
notes)

Answers

Answer:

Tardigrade or a devil worm

Explanation:Here is the link were I got the information from.https://sciencing.com/creatures-that-would-survive-an-apocalypse-13725305.html

Which of the following is a difference between arteries and viens?
arteries carry blood and veins carry only plasma
arteries do not have valves and veins do have valves
arteries are thin and veins are thick
arteries carry blood back to the heart and veins carry blood to the heart

Answers

The correct option is :

=》arteries do not have valves and veins do have valves.

Arteries don't have valves because back flow of blood isn't possible due to high pressure, but blood in veins doesn't have high pressure just like arteries, so to stop backflow of blood, veins have valves.

PEASE HELPPP!!!

Identify the individual(s) in the Jones family whose genotype cannot be determined with the certainty (A_?)

Answers

We'd need to know if the trait is dominant or recessive. In other words, is the colored in A_ or aa?

Which two elements are found as liquids in nature

Answers

Answer: The two liquid elements are bromine and mercury.

Question 4
2 pts
In order to survive and reproduce, organisms need what type of traits?
Traits like the parents
Traits that make them the smartest
Traits favorable for survival
Traits that make them the most attractive

Answers

traits favorable for survival

What is the answer to number three and four I’m like totally confused


Answers

Answer:

I think it is true for 3 and false for 4 but i am 100% so i won't trust me fully so yeah.

Explanation:

What is the role of the respiratory system?
What happens when you breathe?
What happens in the circulatory system?
What are the structures of the heart?
How does blood flow through the circulatory system?
What does blood contain?

Answers

Answer:

The human respiratory system contains the organs that allow us to get the oxygen we need and to remove the waste carbon dioxide we do not need. It contains these parts: two lungs. ... various structures in the chest that allow air to move in and out of the lungs.

I need to know what is the answer for number 6 and 7 and that’s all

Answers

Answer:

you have it right

Explanation:

the boundary between two air masses IS CALLED A FRONT

A STATIONARY FRONT causes light rain over several days

Where are earthquakes most likely to
take place?
(1) along the core-mantle interface
(2) where the composition of the Earth
tends to be uniform
(3) near the Earth's Equator
(4) near a fault zone

Answers

Answer:

4 near a fault zone.

Explanation:

An 1815 volcanic eruption in Indonesia was followed by a three-year famine
around the world. How was the volcano linked to the famine?
A. The eruption preserved an ancient human civilization.
B. The eruption's heat and energy killed all the farmers in its path.
C. The eruption contributed to global warming.
D. The eruption's ash and gas significantly dimmed the sun.
sun
E. The eruption killed many local people.

Answers

D. Leading to reduced crop output

in which process are fossils formed by the compression of dead organisms over time

Answers

The correct answer is Carbonization.
There are many types by which the formation of fossils can takes place. Out of this one is carbonization in which a fossil is formed by the compression of dead organisms over time.1

Answer:

Carbonization

Explanation:

if pointed heads are dominant to round heads, which of the following genotypes could express a round phenotype

Answers

Answer:

D - Pp

Explanation:

I initially thought it would be A - PP, but I realized D is actually the best answer since it includes both phenotypes with the allele for round heads (P) being dominant and, therefore, expressed.

Hope this helps you figure out the answer :) Have an awesome day!

What can cause thermal expansion that results in a change in the density of ocean water?

a climate change
b freezing temperatures
c weathering and erosion
d addition of sediments

Answers

Answer:

Explanation:

B because Thermal expansion is caused when seawater expands because of the higher temperature of the water. Since the oceans absorb heat from the atmosphere, when the atmosphere becomes warmer so will the oceans. Warm seawater has a greater volume than cold seawater.

write it in your own words
Why is it important to know there are good and bad bacteria?

Answers

It is important to know there are good and bad bacteria because most bacteria cause diseases and harm your body while the good bacteria helps your body and keep the diseases away. Good bacteria helps protect the cells in your body from invading pathogens and promotes the repair of damaged tissue, because of the good bacteria the bad bacteria wouldn’t have a single chance to grow and cause diseases!

I’ll mark brain list if you answer all of them

Answers

1.B
2.C
3.D
4. A
hope this helpss!!

A species of moth lived in a forest with a mixture of dark- and light-colored trees. The coloring of these moths is inherited. The dark moths were hidden from predators on the dark trees, and the light moths were hidden on the light trees.



When the light-colored trees were killed by a disease, the forest was suddenly made up almost entirely of dark trees. Generations later, almost all the moths had the dark coloring. Which of the following gives a correct explanation?

Answers

Answer: The light moths that survived did not mate and have offspring because they thought that their offspring would easily be seen and eaten by predators.

The light moths that survived had dark offspring because the change in the environment caused the parents to decide to have offspring that would do better in the changed environment.

The light moths saw that the dark moths were less likely to be eaten by predators, so they made themselves dark as well.

The dark moths were better hidden from predators, so more of them survived. Because dark parents outnumbered light parents, there were many more dark offspring than light offspring in the next generation.

Explanation:

5. In 1928, Alexander Fleming noticed that a mysterious blue-green fungus had grown on some bacterial colonies that were known to cause strep throat. Upon closer inspection, he noticed that the bacterial colonies did not survive when introduced to the fungus. He questioned if something in the fungus stopped the bacteria from growing. Which steps in the scientific method are included in this story

Answers

Answer:

The steps that can be seen in this story are observation and the questioning phase, which can also be called elaboration of the problem.

Explanation:

The scientific method is a set of phases that are able to guide researchers to the creation of scientific knowledge, through an experiment. This method is essential for conducting scientific research, allowing an experiment to be managed in a way that promotes answers to scientists' questions. The scientific method presents the phases called observation, questioning (or elaboration of the problem), elaboration of hypotheses, experimentation, analysis of the results and conclusion.

In the story shown in the question above, we can see the phases called observation and questioning. The observation takes place the moment Fleming noticed a fungus capable of growing on colonies of bacteria that cause throat infections, killing them. This observation made him enter the questioning phase, when he wondered if the fungus was able to prevent the growth of these bacteria.

UAE is a hot and dry region but still it is seen that the production of plants is increasing. Justify your answer

Answers

Answer:

mmzozkn

Explanation:

mdkxmxkcmmxkdmxlxl

Which cell division phase is shown in the image?
A) telophase
B) metaphase
C) prophase
D) anaphase

Answers

Answer:

metaphase is the correct answer of this

Answer:

b is correct

Explanation:

ok ok ok ok ok ❤️❤️


Synapsis is when the homologous chromosomes pair up (come together).
True
False

Answers

Definitely true.......

Please help asap (Photosynthesis, look at the image)

Answers

Answer:

A: store energy in the form of ATP

Are the following structures found in plant cells, animal cells, or both?
cell membrane
cell wall
nucleus
ribosomes
chloroplasts
mitochondria

Answers

cell membrane- both
cell wall-plant
nucleus-animal
ribosomes-plant
chloroplasts-plant
mitochondria-both

Answer:

chloroplasts

Explanation:

What is the answer to this question if anybody knows i’m really finding it confusing

Answers

15 meters. the little key in the bottom right would indicate that :)

Common Garter Snake: What part of the environment might make an individual more or less likely to survive?

Answers

Answer:

The awnser is the enviorment changes or an invaseve spices comes into the area.

Explanation:

The awnser is the enviorment changes or an invasive spices comes into the area.

What is Invasive species?

Invasive species can undermine an ecosystem's natural resources and put human usage of those resources in danger.

Aquaculture species can be released intentionally or accidentally, as well as through aquarium specimens or bait, oceangoing ships' ballast water, aquarium specimens, and other methods.

Invasive species have the potential to wipe out native species, reduce biodiversity, compete with native organisms for scarce resources, and modify environments. This may have significant negative economic effects and fundamentally alter the ecosystems of the Great Lakes and the seashore.

Therefore, The answer is the enviorment changes or an invasive spices comes into the area.

To learn more about Invasive species, refer to the link:

https://brainly.com/question/21452505

#SPJ3

compare the similarities and differences between use of light as a development signal versus use of light during photosynthesis in plants. ​

Answers

link is a bout dont trust it from my experience

What is an immune response?

Answers

Answer:

The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.

Hope this helps!

Define food menu??????​

Answers

Answer:

A menu is a set of options presented to the user of a computer application to help the user find information or execute a program function. Menus are common in graphical user interfaces ( GUI s) such as Windows or the Mac OS .

Explanation:

hope it helps..

The menu is a list of food and beverages offered to customers with the prices is called food menu.

Indicate whether the given structure is located in the outer, middle, or inner ear. pharngotympanic tube helicotrema stapedius

Answers

Answer:

The pharngotympanic tube is in the middle ear.The helicotrema is in the inner ear.The stapedius is in the middle ear.

Explanation:

The ear has three main parts, the outer part, the middle part, and the inner part. The outer part of the ear starts in the auricle, then it continues with the auditory canal, and it finishes with the eardrum. Then we have the middle ear that is separated from the outer one with the eardrum. In this section, it is the pharngotympanic tube, also known as the Eustachian tube. It is a tube that connects the inner ear with the pharynx to regulate internal pressure.

The inner ear has the bony labyrinth and the membranous labyrinth. In this part of the ear, the mechanical signals are transformed into electrical signals. The bony labyrinth has the cochlea, the vestibule, and the semicircular canals. The helicotrema is in the cochlea, and it connects the tympanic duct with the vestibular duct.

The stapedius is a muscle located in the middle ear. Its insertion is in the stapes, a small bone that moves with the vibrations that come from the eardrum to the malleus and the stapes. The stapedius' function is to protect our hearing by reducing the vibrations that enter this part of the ear.

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Define a class Complex to represent complex numbers. All complex numbers are of the form x + yi, where x and y are real numbers, real numbers being all those numbers which are positive, negative, or zero. Your friend Steven plans to add black paint to his blue paint to make the hue darker. He hopes to convey an impression of mystery in his artwork. When he does this, what specific aspect of color do you determine he will be changing? A. intensity B. saturation C. value D. texture disadvantages of exclusion Which of the following statements is true about the Big Bang Theory?1 pointEverything in the universe was created when the big bang occurred and the universe isexpandingOEverything in the universe was created when the big bang occurred and the universe isstaying in the same location.O The sun is the center of our solar system.The Earth is the center of out solar system.Kk why did Kepler's discovery of elliptical orbits"rock the scientific community" FIRST TO ANSWER CORRECTLY GETS BRAINLEIST PLEASE ! :) points rewarded ! What iS the name of the building above? The selling price per unit is $3,500. The budgeted level of production used to calculate the budgeted fixed manufacturing cost per unit is 1,400 units. There are no price, efficiency, or spending variances. Any pro- duction-volume variance is written off to cost of goods sold in the month in which it occurs. 360 CHAPTER 9 INVENTORY COSTING AND CAPACITY ANALYSIS 1. Prepare income statements for Crystal Clear in January, February, and March 2014 under (a) variable costing and (b) absorption costing. 2. Explain the difference in operating income for January, February, and March under variable costing and absorption costing. HELP PLEASEE HURRY PLEASE In what portion of the brain is anger dealt with?The portion of the brain that deals with fine motor skills.The portion of the brain that deals with intelligence.The portion of the brain that deals with emotions.The portion of the brain that deals with the senses. please help. I think it might be C but I don't know What is the probability of choosing an ace from a deck of cards? Type your answer as a fraction. What is the plural form of volcano ? What does a credit card company consider when you apply for a card? A.Which companies you have credit cards from already B.Whether you will pay off your balance in full every month C.How many credit cards you have applied for D.The name of the company where you work Plz help me out with this Which letter in the rock cycle diagram represents metamorphic rock?A)A.B)B.)D.D)E. Mopeds (small motorcycles with an engine capacity below 50 cm^3) are very popular in Europe because of their mobility, ease of operation, and low cost. Suppose the maximum speed of a moped is normally distributed with mean value 46.8 km/h and standard deviation 1.75 km/h. Consider randomly selecting a single such moped.Required:a. What is the probability that maximum speed is at most 49 km/h?b. What is the probability that maximum speed is at least 48 km/h? c. What is the probability that maximum speed differs from the mean value by at most 2.5 standard deviations? 6. Alice is covering a foam cube with fabric to make a footstool. Each side of the cube is 20 inches. Howmany square inches of fabric will she need?120 in? of fabric0 720 in.of fabric1,200 in? of fabric2,400 in 2 of fabric please help marking brainliest if it's correct and explain As the price level rises, the purchasing power of households' real wealth will , causing the quantity of output demanded to . This phenomenon is known as the effect. Additionally, as the price level rises, the impact on the domestic interest rate will cause the real value of the dollar to in foreign exchange markets. The number of domestic products purchased by foreigners (exports) will therefore , and the number of foreign products purchased by domestic consumers and firms (imports) will . Net exports will therefore , causing the quantity of domestic output demanded to . This phenomenon is known as the effect.