Describe the structure and function of the cell membrane.

Answers

Answer 1

Answer:

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.

Explanation:


Related Questions

Question 1 (1 point)
The atlas would fall into which category of bones?
a. Short
b. long
C. irregular
d. flat

Answers

Answer:

Flat

Explanation:

The atlas is one of the two upper cervical vertebrae, also known as C1, which is the topmost vertebra of the spinal column. ... It is the vertebra that is in contact with the occipital bone, a flat bone located at the back portion of the head.

Examine the illustration.
Which structure in the cell contains the cell's genetic
information?
A
B
C
D

Answers

Answer:

b

Explanation:

b is the nucleus and it contains the dna

Answer:

B

Explanation: I took the test

What best describes the relationship between microbes and humans

Answers

Answer:

I'd say C.

Explanation:

Answer:I’d also say C








Explanation:

what is the first thing that happens when a new cell is produced?

Answers

Answer:

the new cell splits into two cells called daughter cells

Which is NOT a simple invertebrate? im giving brainliest
jellyfish
sponge
roundworm
snails

Answers

Answer:

snails the answer is D

Explanation:

mark me as brainliest please

Why is mass a better unit for measuring matter than weight?*
Because mass can change, but weight doesn't
Because mass is constant, while weight depends on gravity.
Because it makes more sense.

Answers

Answer:

Because mass is constant, while weight depends on gravity.

Explanation:

For example, your mass on Earth will be the same as your mass on planet Mars. Your weight however, will change depending on the force of gravity exerted on you.

1. clumped population dispersal ___ resources
a) share
b) compete
c) are independent of
d) disperse

2. The level in which a population can no longer grow due to limited resources is referred to as,
a) K, carrying capacity
b) L, limited growth rate
c) D, death rate
d) N, no more nutrients

3.Most life on Earth exhibits which form of population growth curve?
a) logistic
b) exponential
c) algebraic
d) deductive

Answers

Answer:

compete

limited growth rate

logistic

Explanation:

Which best describes the cell theory?
Scientists know all there is to know about cells, so the cell theory will not change.
As technological advancements are made, the cell theory may change.
A theory, once formulated, cannot be changed.
The development of a synthetic cell has caused the cell theory to change.

Answers

Answer:

2.

Explanation:

Answer:

As technological advancements are made, the cell theory may change.

Explanation:

i did the test tell me if im wrong

two or more "jobs" that must occur
inside of our body so that we stay alive.

Answers

Answer:

Every second of every day, blood delivers vital nutrients, oxygen, and other chemicals to all of your organs. It also carts away your body's waste. They coat germs, making it possible for white blood cells in the bloodstream to kill them. However, the very liquid that keeps you alive can also kill you.

Explanation:

Hope this helps

Heart and lungs I think

Please help! I am so confused, please just help me understand this thing! I'm desperate

Answers

Answer:

i dont even know

Explanation:

bc its to hard to understand

to describe a car’s velocity,a student must incloude its’s

direction and speed

mass and volume

speed and color

volume and direction

Answers

Answer:

mass and volume

Explanation:

the mass of the car will help in deciding on it's speed and it's volume on it's velocity

Answer:

direction and speed

Explanation:

velocity is the speed of the object in a given direction.

write a short story about a time u had to use gravity to accomplish something.

Answers

Answer:

Explanation: so there are a bunch of ways I could go with the story

I could either talk about jump ropeing or jumping on a trampoline or even throwing a ball into the air. when your playing and you trow a ball in the air. You are gonna want it to come down. So thats how you use gravity to accomplish something

help............ty....... ​

Answers

I really hope this helps and this is right. I wasn’t sure what it was exactly asking. And I haven’t done this for awhile.

What is one reason scientists are trying to culture meat in laboratories instead of simply hunting or raising animals?​

Answers

Answer:

Many reasons - but a really good question.

Explanation:

Cruelty - eating meat poses ethical issues to some people. They dont eat meat because they dont believe animals should be harmed. Growing laboratory meat takes away the need for slaughter.

Land used - a big issue with producing meat is the amount of land we need to raise cattle and to grow the food to feed cattle. Rainforest, woodlands, moorland have to be destructed to make way for pasture land for cattle. The food that cattle or animal eats also needs to be grown, which requires more land. Laboratory grown meat doesnt require all the pasture space for raising or feeding animals.

Water use - the amount of water that goes into producing meat is very high when compared to amount of meat that you get back. Water availability is another global issue that may be able to be addressed by lab produced meat.

When animals are reared from meat, they may be killed in unethical ways thereby making it ethically irresponsible to raise animals for meat.

Animals are widely used as food. This food from animals or having animal origin is known as meat. The ethical issues are of key importance in raising meat for food.

When animals are reared from meat, they may be killed in unethical ways thereby making it ethically irresponsible to raise animals for meat.

Learn more about animals: https://brainly.com/question/1195122

The term "phase" only refers to a state of matter in science (True or False)
True
False

Answers

False it is not just used in the mater of science

How is burning a piece of wood a chemical change, while boiling water is not? I don’t get it....well i do but i need a answer.:/

Answers

Answer:

A burning piece of wood is a chemical change, because you alter it, and it turns to ashes, and it is irreversible, where as you can make water cold again

Answer:

youre creating a new substance in a chemical reaction

Explanation:

by boiling water, you arent making anything new. you're just changing the form of the water.

by burning wood, you're inducing a chemical reaction because some new substance is being made with the reactants

Why is the nutrient cycle important?
a) both answers
b) neither answers
c) it limits the accumulation of elements which may have become toxic
d) it guarantees ecosystems don’t run out of nutrients

Answers

I beleive the answer is D, it is called the Nutrients cycle.

D) it guaranteed ecosystem

Not sure if you can help but please try!
Scenario
You look outside your bedroom window and see clear, sunny skies and calm weather. You overhear a weather forecast on the news that says a high pressure system will be in the area for the next few days. You are wondering what your friend who lives in Kentucky was going to do this week. You decide to text her and check it out. You were surprised to learn that it was raining where she lived and could turn into an ice/snow storm later. No school tomorrow for her!!!! LUCKY!!!

External Data
You are located at the yellow X on the map below. Your friend is located at the black X on the map below


Prompt:
Write a scientific explanation that predicts what the weather would be like in your area and your friend’s area over the next few days.

Answers

Answer:

For the friend, she will will have heavy rain, drizzlings, and maybe even some frozen rain and sleet for the next few days. For me, it is just regular days with sunny skies and just everything normal.

Explanation:

The left and right sides of the brain refer to which of the following?
a. reticular activating system
b. cerebral cortex
c. cerebellum
d. medulla

Answers

cerebral cortex

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whats the difference between acid , bases and buffers?​

Answers

Please select me as brainiest. It would make my day.

Answer:

A basic solution will have a pH above 7.0, while an acidic solution will have a pH below 7.0. Buffers are solutions that contain a weak acid and its a conjugate base; as such, they can absorb excess H+ions or OH– ions, thereby maintaining an overall steady pH in the solution.

summarize the three general steps involved in chemical
cycling:

Answers

Answer:

Explanation:

Chemical cycles typically involve three general steps: ... As organisms die, decomposers break them down, further supplying the soil, water, and air with chemicals in inorganic form. The producers gain a renewed supply of raw materials for building organic matter, and the cycles continue.

what happens to a enzyme after it has completed a reaction?

Answers

Answer: The enzyme will always return to its original state at the completion of the reaction. One of the important properties of enzymes is that they remain ultimately unchanged by the reactions they catalyze. After an enzyme is done catalyzing a reaction, it releases its products (substrates).

Enzymes are not consumed in the reaction, they can continue catalyzing more reactions, they can remain bound to the product or they can be degraded.

What are enzymes?

Enzymes are biomolecules that catalyze chemical reactions in living organisms. They are typically proteins, although RNA molecules known as ribozymes also exist. Enzymes are responsible for many of the metabolic processes that occur in cells and are essential for life. They are highly specific, meaning that they typically only catalyze one or a few specific reactions, and they increase the rate of reactions by reducing the activation energy required for the reaction to occur.

After an enzyme has completed a reaction, it is still present and can continue to catalyze more reactions. Enzymes can catalyze thousands of reactions per second, and they can remain active for long periods of time. However, enzymes can also be inactivated or destroyed by various factors, such as high temperatures, changes in pH, or the presence of certain chemicals

Learn more about enzymes, here:

https://brainly.com/question/17292676

#SPJ2

Use subsoil in a sentence.

Answers

Answer:

The soil is loam and the subsoil Old Red Sandstone, interstratified with cornstone at Pippin's Hill in the north. Copy

Many soils have a topsoil layer that is more permeable than the clay subsoil. Copy

It also includes the air and water space above, and the subsoil and bedrock below that.

Explanation:

I. Plant cells are formed from fertile soil. II. Animal cells must function properly for an organism to be healthy. III.Cells make up the petals, stem, and leaves of a lily plant. IV. Bacteria are produced from other living bacteria. Which describes the statements that Schwann and Schleiden would make? Schwann would make Statement I and Schleiden would make Statement IV. Schwann would make Statement II and Schleiden would make Statement III. Schwann would make Statement III and Schleiden would make Statement II. Schwann would make Statement IV and Schleiden would make Statement I.

Answers

Answer:

Schwann would make statement II and Schleiden would make statement III

Explanation:

Schleiden, a German botanist and Schwann was a zoologist, both have found that the plants and animals are made up of cells, they both shared their research and observation with each other and made the conclusion that all living organisms are made up of cells.

As mentioned above Schleiden was a botanist so he must have concluded and described that all plant organs are made up of cells, similarly as zoologist he proposed that the cell must function properly in an organism.

Answer:

B- Schwann would make Statement II and Schleiden would make Statement III.

Explanation:

please help (5 Stars no cap)2

Answers

Answer:

H. Nucleus

Explanation:

A nucleus is found in the cell and is responsible for heredity and cellular control.

Hope I helped.

The tundra is broken up into 2 parts. What are these 2 parts?

Answers

Answer:

Artic Tundra, Alpine Tundra

Explanation:

Edg 2020 juss took the test.

an astronaut travels from earth to a planet with less gravity than earth. which of the following statements describes the astronaut's weight and mass
a.) the astronauts will weigh more than on the other planet, but her mass will stay the same
b.) the astronauts will weigh less than on the other planet, but her mass will stay the same
c.) the astronauts will weigh the same than on the other planet, but her mass will increase
d.)the astronauts will weigh the same than on the other planet, but her mass will decrease

Answers

I think the answer is C

what are the cause of forest fires only one

Answers

Answer:

Humans :(

Explanation:

One of the largest causes of forest fires are humans. Either by neglecting campfires, throwing cigarette butts, or arson. Or gender reveal parties lol.

What are the functions of the nucleolus? (Choose all that apply)
converting energy from food into a form the cell can use
regulating the cell’s interaction with its surroundings
translating the code contained by the DNA into the proteins the cell needs for structure and function

Answers

Answer:

El nucleolo  

Explanation:

El nucleolo es una región del núcleo celular que se ocupa de la producción y ensamblaje de los ribosomas de las células. Tras el montaje, los ribosomas son transportados al citoplasma de la célula donde sirven como centros de síntesis de las proteínas.

i need help pls question is below

Answers

Answer:

Hey mate......

Explanation:

This is ur answer.....

B. 8 Kilograms

hope it helps,

mark me as the brainliest.....

Follow me.......xd

Hey!

I’m sure A is the answer

Best of luck :)
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Motown session musician Earl Van directed the funk Brothers as a heavy handed According to the Seventh Amendment, people who sue companies for not paying them are guaranteedpayment for their work.representation by lawyers.trials by jury.double jeopardy. 7y+8y can be simplified to 15yTrue or false What were the first type of foods made from grains? Martha drove 281.4 miles in 4.2 hours. How fast was she driving? Plzz answer fastt!!! When did most of the Eastern European gain their independence from the Soviet Union?1980197020001990 please help asap, i will give brainliest Select all of the following transformations that would map CDE to TSR. a reflection over the y-axis a reflection over the line x=5.5 a translation of (x, y)(x+6, y) a rotation of 90 counterclockwise about the point (5.5, 0) a reflection over the line x=4, and a translation of (x, y)(x+3, y) The text cites___________ as the first step to conquering anger. And ___________ as a component to dealing with anger constructively involving stating no to an unreasonable request.Group of answer choicesTaking positive action;Being assertiveStaying calm;Taking positive actionCommunicating your feelings;Taking positive actionUnderstanding what caused it;Being assertiveThe text cites___________ as the first step to conquering anger. And ___________ as a component to dealing with anger constructively involving stating no to an unreasonable request.Group of answer choicesTaking positive action;Being assertiveStaying calm;Taking positive actionCommunicating your feelings;Taking positive actionUnderstanding what caused it;Being assertive Find the quotient of 12 5 2 5 . 1. Rewite the division as multiplication by the reciprocal.The rewritten expression is 2. Multiply the numerators to get , and then multiply the denominators to get 3. Simplify. The quotient is Find an equivalent expression to 7y + 28x WILL GIVE 5 STAR RATING AND BRAINLIEST IF YOU ANSWER FIRST AND CORRECTLYWhat are the total number of elements in CHOH ? What is the radius of a circular swimming pool with a diameter of 2 feet? Read this excerpt from The Narrative of the Life of Frederick Douglass.I am strongly tempted to give the names of two or three of those little boys, as a testimonial of the gratitude and affection I bear them; but prudence forbids;--not that it would injure me, but it might embarrass them; for it is almost an unpardonable offence to teach slaves to read in this Christian country.Which statement best describes Douglass's viewpoint?A:He is embarrassed to say that he was taught by young children.B:He believes he could be punished for reading to children.C:He thinks it is inappropriate to discuss how people learn to read.D:He wishes he could thank the young boys who taught him to read. Are you afraid to write because you dont think youre a good writer? If so, you may have some misconceptions about the writing process. Use this questionnaire to see if you have any misconceptions about writing. Read the pairs of statements below. For each pair, place a check mark beside the statement that you believe to be true.Writing is easy for good writers.Writing is hard work, even for good writers.There's only one right way to write.There are many effective ways to write.The writing process is ordered; it goes step-by-step.The writing process goes to-and-fro and sometimes in circles.Good writers get it right the first time.Good writers rewrite until they're satisfied with their work.Good writers know everything they want to say before they start.Good writers often find out what they want to say through the process of writing and revising.Writing is an inborn talent; it can't be learned.Writing is a skill; it can be learned with study and practice. If Maria winks exactly 5 times every minute while she is awake and she sleeps exactly 8 hours a day, how many times does Maria wink in a day? winks/day. define civil society Solve the following equation for x: 3 (x+4) = 3x +11 why did the greeks want indepence from the ottoman empire? Which of these numbers rounds to 0.3 when rounded to 1 decimal place?