true or false? diffusion is a result of the random movement of particals

Answers

Answer 1
The kinetic energy of the molecules results in random motion, causing diffusion. In simple diffusion, this process proceeds without the aid of a transport protein. it is the random motion of the molecules that causes them to move from an area of high concentration to an area with a lower concentration. The rate of this movement is a function of temperature, viscosity of the fluid and the size (mass) of the particles. Diffusion explains the net flux of molecules from a region of higher concentration to one of lower concentration. However, diffusion can still occur in the absence of a concentration gradient. Diffusion requires energy input from the cell. ... Only water can diffuse across a cell membrane. Molecules move from areas of high concentration to areas of low concentration. - Passive transport is the diffusion of substances across a membrane. - Facilitated diffusion is the process of spontaneous passive transport of molecules or ions across a cell's membrane via specific proteins. Concentration gradient, size of the particles that are diffusing, and temperature Examples of diffusion in living organisms

Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs: oxygen moves down a concentration gradient from the air in the alveoli to the blood. carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli. What determines the direction of any diffusion process? The relative concentration of the substance in different areas determines the direction of diffusion. Diffusion occurs from regions of high concentrations to regions of low concentration. What determines the direction of any diffusion process? The relative concentration of the substance in different areas determines the direction of diffusion. Diffusion occurs from regions of high concentrations to regions of low concentration. moves into a cell by osmosis, it is moving into an area of higher solute concentration. ... It helps maintain the balance of materials needed for survival, such as oxygen and water. Hope this helped you and can you please mark me as brainiest please!!!!

Related Questions

In your own words, explain why an organism would require all four of the main biomolecules. What would occur if any of these biomolecules were missing? Are any of the biomolecules more important than the others? Is there one that we could live without?

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Answer:

I like yo cut gggggggggggg

Why should we be concerned about the disappearance of phytoplankton in the oceans

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Answer:

The loss of phytoplankton is a huge problem for marine food chains, says Worm, because every creature in the ocean either eats phytoplankton or eats other organisms that depend on it.

Hope this helps!

Only eukaryotic cells have
cytoplasm
membrane bound organelles
DNA
ribosomes

Answers

membrane bound organelles

Which of the following is NOT a characteristic of all living things?
Ability to reproduce
Ability to move
O Growth and development
Homeostasis

Answers

Answer:

homeostatis

Explanation:

The answer should be homeostatis. Organisms can not do this.

Answer:

Ability to move

Explanation:

All organism species have the ability to reproduce, grow and develop, and maintain homeostasis (for example, sweating). Not all organisms can move, however. Cacti, for instance, are stiff and do not move on their own, yet are still alive.

Which one of the codons below would stop the translation of mRNA by ribosomal subunits?
UAG, UAA, UGA
AUG, ATG, GTU
CUG, AUG, GUA
ATG, AAG, AAA

Answers

CUG hope this helped!!!!!

Answer:

CUG,AUG,GUA

Explanation:

Which of the following statements correctly describes the relationship between energy and nutrients in an ecosystem?


a. Energy and nutrients flow
b. Energy and nutrients cycle
c. Energy flows and nutrients cycle
d. Energy cycles and nutrients flow

Answers

A Nutrients move through the ecosystem in biogeochemical cycles. A


b) Write about pest control?

Answers

Answer:

Pest control is helpful I guess...

Explanation: Pest control uses lots of chemicals and poison stuff to kill those vexing pests but most importantly it kills them its a dangerous job if you don't know what your doing.

Answer:

give the answer in short Press control means when in our home of dirty Cockroaches and small insects then we Press control our house to get out all the dirty insects

Explanation:

Mansa is up to this if this is correct then mark me as a brainliest

Name and describe the five types of active transport systems.

Answers

Answer:

Please Mark as Brainliest. Please!!!!!!!!!!

Explanation:

Definition

Active transport is the process of transferring substances into, out of, and between cells, using energy. In some cases, the movement of substances can be accomplished by passive transport, which uses no energy. However, the cell often needs to transport materials against their concentration gradient. In these cases, active transport is required.

Active transport requires energy to move substances from a low concentration of that substance to a high concentration of that substance, in contrast with the process of osmosis. Active transport is most commonly accomplished by a transport protein that undergoes a change in shape when it binds with the cell’s “fuel,” a molecule called adenosine triphosphate (ATP).

For example, one type of active transport channel in the cell membrane will bind to the molecule it is supposed to transport – such as a sodium ion – and hold onto it until a molecule of ATP comes along and binds to the protein. The energy stored in ATP then allows the channel to change shape, spitting the sodium ion out on the opposite side of the cell membrane. This type of active transport directly uses ATP and is called “primary” active transport.

Another type of active transport is “secondary” active transport. In this type of active transport, the protein pump does not use ATP itself, but the cell must utilize ATP in order to keep it functioning. This will be explained in more depth in the section on Symport Pumps below.

Lastly, active transport can be accomplished through processes called endocytosis and exocytosis. In exocytosis, a cell moves something outside of itself in large quantities by wrapping it in a membrane called a vesicle and “spitting out” the vesicle. In endocytosis, a cell “eats” something by wrapping and re-forming its membrane around the substance or item.

Each type of active transport is explained in more detail below.

Types of Active Transport

Antiport Pumps

Antiport pumps as an example of active transport

Active transport by antiport pumps

Antiport pumps are a type of transmembrane co-transporter protein. They pump one substance in one direction, while transporting another substance in the opposite direction. These pumps are extremely efficient because many of them can use one ATP molecule to fuel these two different tasks.

One important type of antiport pump is the sodium-potassium pump, which is discussed in more detail under “Examples of Active Transport.”

Symport Pumps

Symport pumps take advantage of diffusion gradients to move substances. Diffusion gradients are differences in concentration that cause substances to naturally move from areas of high to low concentration.

In the case of a symport pump, a substance that “wants” to move from an area of high concentration to low concentration down its concentration gradient is used to “carry” another substance against its concentration gradient.

One example of a symport pump – that of the sodium-glucose transport protein – is discussed below under “Examples of Active Transport.”

Sympoter pump as an example of active transport

Active transport by symporter pumps

Endocytosis

In the third type of active transport, large items, or large amounts of extracellular fluid, may be taken into a cell through the process of endocytosis.

Summarize the process of sexual reproduction and explain how variations of inherited traits can increase or decrease an organism’s chance of survival

Answers

Answer:

Explanation:

A Human cell has 46 chromosomes. (I’ll use humans to keep things simple). In sexual reproduction both humans have 23 chromosomes, in their sex cells. (Men have 23 in a sperm and women have 23 in an egg cell). These half cells merge to create 1 unique cell, that has characteristics of both male and female. The cells multiply and then a baby is born with a unique set of genes. These cause variations, and remember these variations can carry from generation to generation. As for how variations can increase a chance for survival, variations allow unique gene sets to be made, so that in case of a disease (in this case I’ll use a disease, but it could also include harsh environmental conditions), these unique gene sets may give an individual natural immunity to the disease. How can a variation decrease an organisms chance for survival? Well, s there are many ways that a unique gene set can make it difficult to survive. For example a genetic disease your family has had a history with. These diseases include, but are not limited to, cancer, diabetes, and schizophrenia.

Wetlands are natural parts of watershed systems. Wetlands provide benefits many benefits. Which of these is a way that wetlands directly benefit humans?

- provide nesting grounds for birds

- decrease erosion along shorelines

- reduce flooding in adjacent towns

- increase biodiversity near the ocean

Answers

wetlands help us by reducing flooding in adjacent towns

Answer:

the answer is c because it soaks up the water so it cant flood the towns

Explanation:

7. What is the water vapor concentration at the tropopause?

Answers

Answer:

99 %

The troposphere contains 99 % of the water vapor in the atmosphere. Water vapor concentrations vary with latitude. They are greatest above the tropics, where they may be as high as 3 %, and decrease toward the polar regions.

Explanation:

hope this helps <3

The fraction whose denominator is 8 more than the numarator​

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Answer:

Explanation:

1/9

Answer:

[tex]\frac{8}{16}[/tex]

Explanation:

16. Name one organism that reproduces through binary fission​

Answers

Answer:

Coral!

Explanation:

I learned this is a biology class a while ago!

Answer:

Bacteria

Explanation:

~PLEASE HELP ME~
The warming of the atmosphere by the trapping of heat being radiated to space is called
a)condensation
b)evaporation
c)the greenhouse effect
d)radiation

Answers

Answer:

The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. This process makes Earth much warmer than it would be without an atmosphere. Solar energy absorbed at Earth's surface is radiated back into the atmosphere as heat. As the heat makes its way through the atmosphere and back out to space, greenhouse gases absorb much of it.

The answer is c



Good luck

During the light dependent reactions of photosynthesis which is not produced
A.Oxygen
B.ATP
C.NADPH
D. Glucose

*hurryyyyyyy*

Answers

Answer:

D. Glucose

Explanation:

Is toxic chemical pollution a nonpoint source pollution or a point source pollution? I need an actual answer.

Answers

Answer:

Excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. Oil, grease and toxic chemicals from urban runoff and energy production.

Explanation:

A scientist crossed two fruit flies in a lab. She was studying the transmission of the alleles that affect wing shape. The dominant allele, C, is the allele for curly wings, and the recessive allele, c, is the allele for straight wings. She knew that one of the parent flies was heterozygous and had curly wings (Cc). Half of the offspring from the cross had curly wings, and the other half had straight wings. Identify the genotype and phenotype of the second parent fly. State the evidence that supports your response.

Answers

Answer:

The other fly would have to be a cc

Explanation:

To do this, you can use the square method, one Cc's on the top and one side a cc, when you cross these it gives you Cc, Cc, and cc, cc. Half and half.

Hope this helped!

The other parent was cc.

Genes often occur in pairs. Genes are units of inheritance located in the chromosomes. The pairs in which genes occur are called alleles. In a given pair of alleles, one gene is dominant and the other is recessive.

In this case, the dominant gene is for curly wings and the recessive gene is for straight wings. If one parent is Cc , the other parent must be cc causing half of the offspring from the cross to have curly wings, and the other half to have straight wings.

Learn more: https://brainly.com/question/13978139

What does lemon juice, snake venom and cyanide have in common?

Answers

Answer:

enzymes are protein molecules that act as catalysts, speeding up chemical reactions without themselves getting used up. Each enzyme will only speed up a specific reaction, for example, catalase will speed up the decomposition of hydrogen peroxide into water and oxygen but it will not speed up the breakdown of starch into glucose. Enzymes (e.g. catalase) have active sites with specific shapes that bind to the substrate molecule (e.g. hydrogen peroxide) forming an enzyme-substrate complex. The enzyme-substrate complex then breaks down into the enzyme and product, allowing the enzyme to go on and react with another substrate molecule. Temperature and pH affect enzyme function because they can change the shape of the enzyme’s active site, preventing it from binding to the substrate, just as a broken lock will no longer fit the key. When the shape of an enzyme changes we call this denaturation. Any factor that increases the frequency of collisions between enzymes and substrates (increasing concentration, surface area or temperature) will increase the rate of reaction.

Explanation:

What lemon juice, snake venom and cyanide have in common is hat they are all acidic substances.

An acidic solution is a solution that contains hydrogen ions as its only positive ion in solution. Acidic substances have a sour and turn blue litmus paper red.

What lemon juice, snake venom and cyanide have in common is hat they are all acidic substances.

Learn more about acids: https://brainly.com/question/3930479

b) How does the thermal energy of solid water change as it melts?

Answers

When ice melts, it’s temperature remains constant until all the ice turns to water.

Answer:

Hi! So solid water would be ice, the particles in ice are very close together which makes it firm and makes it ice. When you put the ice in the microwave, (Microwave has heat so it would be thermal energy!) the particles in the ice mover a tiny bit away from each other which then makes it water. Then, if you boil the water, the particles that are in the water move far away from each other and it turns into steam!

Hope this helps!! Stay safe! <3

Can someone answer this!!!!!!

Answers

Answer:

Diffusion.

Explanation:

Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration.

When the [tex]O_{2}[/tex] moves in, the [tex]CO_{2}[/tex] moves out.

How does mutation increase chances for survival? Please help me.

Answers

Answer:

These mutations can increase an organism's chance for survival and usually occur over a course of many generations producing offspring (or babies) with the helpful mutation. ... This would allow you to mate and produce offspring because you would have survived for longer lifespans.

Explanation:

research and tell the story about a case in which bones helped identify a missing person or helped solve a crome

Answers

Answer:

footsteps

Explanation:

the bones leave footsteps in the ground and that is what detectives use to solve a missing or help solve a crimescene

Explain the purpose of cellular respiration .where does it take place ?

Answers

Answer:

Cellular respiration, it is an aerobic process in which glucose is combined with oxygen and Adenosine di-phosphate (ADP) to produce carbon dioxide, water, and Adenosine tri-phosphate (ATP).

Cellular respiration takes place in double membraned organelle called mitochondrion.

Which type of energy change causes this leaf to grow? A. Thermal energy is transformed into potential energy. B. Thermal energy is transferred to the leaf. C. Electromagnetic energy is transformed into chemical energy. D. Electromagnetic energy is transferred to the leaf.

Answers

Answer:

C. Electromagnetic energy is transformed into chemical energy

Explanation:

Growth is one of the characteristics of living things. It refers to the increase of an organism. A leaf is part of a plant, which is a photosynthetic organism i.e. an organism capable of producing its own food using energy from sunlight. Light energy is a part of the ELECTROMAGNETIC ENERGY.

This light energy is used to synthesize glucose (food) via photosynthesis. The glucose, which stores chemical energy in its bond is then broken down to yield ATP used for growth. Hence, the transformation of electromagnetic energy to light energy is how a leaf grow.

it is C.  Electromagnetic energy is transformed into chemical energy.

which best explains the mechanism that allows for cell differentiation ?

Answers

Answer:

Cellular differentiation

Explanation:

Which of the following is a result of too many greenhouse gases in the atmosphere?
A: Glaciers melting
B: Sea levels rising
C: Cloud forests drying

Answers

Answer:

glaciers melting

Explanation:

thats what i would say

Using the law of conservation of mass, what is the mass, in grams, of the product in the given reaction?

Reactant 1 (35 grams)+ Reactant 2 (115 grams) →Product (? grams)

A. 80

B. 140

C. 150

D. 75

Answers

Answer:

The correct option is;

C. 150

Explanation:

By the law of conservation of mass we have that in a closed system, the mass of the items in the system can not be destroyed or created by a physical process or chemical reaction

In the given chemical reaction process we have;

Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product = ((35 + 115) grams)

∴ Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product (150 grams)

The mass of the product = 150 grams.

which two structures are not found in both animal and plant cells

Answers

Cell wall and chloroplast are two examples of structures which are found in plant cells but not in animal cells.

Hurry plzzzz >_<
How are plant and animal cells similar?

Answers

Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements

Answer:

Plant and animal cells are similar because both are eukaryotic. Every plant and animal cell has a cell membrane and cytoplasm. In addition, nearly all plant and animal cells have a nucleus.

Explanation:

I got it right

What is the smallest unit ?

Answers

Cell

I had the same question on my test!!

Answer: B) cell

the smallest unit of life is a cell

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Many people have been barred from opportunities based on race, gender, or ethnicity.D Many people have been treated unfairly because of their ethnicity but not because ofgender or race.Please select the best answer from the choices provided.AOOB NEWS ARTICLE AUSTRALIAN ABORIGINES AND THE DREAMTIME WHEN THE WORLD WAS CREATED Part A What does the author explain about Australian aboriginal stories and those of other native cultures? O The author argues that the Australian aboriginal stories originated with the native cultures of other neighboring lands. OThe author states that there are mischief-maker characters in aboriginal stories and in stories from other cultures. OThe author says that Australian aboriginal stories have nothing in common with stories from other native cultures. OThe author shows how there are important pairs of gods in all native creation stories. Part B Which evidence from the text best supports the answer to Part A? oIt also seems likely they didn't mix much with outside groups until the arrival of Europeans in the seventh century." "Another pair of gods known to the northern Gunwinggu people were Wurugag, the first male, and Waramurungundi, the first female." O"As in the case of some Chinese creation stories, it is difficult to determine the difference between gods and heroes." "Like trickster characters in other cultures across the world, Bamapana doesn't care much about the line between right and wrong... how much is twice the size if im 3 ft 7 in tall Using information from the diagram, state one reason why the movement in the third image represents active transport How do oxbow lakes form? A. It is formed as lakes grow larger due to erosion and begins to look like an ox. B. It is formed when a bend in a river is cut off to form a lake. C. It is formed when a delta grows large enough to cut off a river to form a lake. D. It is formed when a dam stops the flow of a river and creates a lake. Find the slope of the line that passes through (9,6) and (1,3) Lines 80-93: In what four places does Poe repeat a word or phrase? What idea does the repetition of to feel emphasize? What impact does the repetition of the word stealthily have? If product of two numbers=384HCF=8,2cm=? It is important to ensure that your goals are so that you know exactly what you are trying to achieve. A. exclusive B. specific C. compatible On her first science test, Whitney scored a 92%. On the second test, she scored an 80%. What is the approximate percent of decrease in her score? 50 POINTS Write an essay on how characterization is used to express and develop the main themes in Animal Farm, choosing two from the following pairs: Napoleon/corruption of power The Pigs/social-class hierarchy The Animals/working-class loyalty Squealer/manipulation of language Use specific details from the story and information about historical events to describe how characters and their actions express and develop each of the two themes. Paragraph 1 Define Characterization. (research and make sure you cite your sources) (1-2 sentences) Why do you think characterization is used in the story? (2-3 sentences) Give a brief summary of Animal Farm and its theme. (2-4 sentences) Paragraph 2 Choose your first character. What does this character represent? (2-3 sentences) Describe this character and his/her contribution to the farm. (2-4 sentences) What makes this character important? (1-2 sentences) Whats the theme for this character and why is it important? (2-3 sentences) Paragraph 3 Choose your second character. What does this character represent? (2-3 sentences) Describe this character and his/her contribution to the farm. (2-3 sentences) What makes this character important? (1-2 sentences) Whats the theme for this character and why is it important? (2-3 sentences) -1/3(x-15)=-4 what is the correct sequence of operations Theforce acting on an object is the combination ofall of the individual forces acting on it.Check it2 SCRATCHPAD~ Improve this questio QUESTION 411. Health care records belong to the patient since they are paying for care.OOTrueFalse Read the passage.1.Whan that Aprill with his shoures soote2. The droghte of March hath perced to the roote,3.And bathed every veyne in swich licour4.Of which vertu engendred is the flour;5.Whan Zephirus eek with his sweete breeth6.Inspired hath in every holt and heeth7. The tendre croppes, and the yonge sonne8. Hath in the Ram his half cours yronne,Which literary device is used in lines 3 and 4?O a standard rhyme schemeO alliterationO ironyallusion Analyze the map below and answer the question that follows.A political map of South America. Countries are labeled 1 to 6. 1 is attached to Panama and between Ecuador and Venezuela. 2 is between Colombia and Guyana. 3 is the largest country. 4 is in the south between Chile and Paraguay. 5 is along the Southwestern coast next to Argentina. 6 is along the Northwestern coast between Ecuador and Chile.Image courtesy of NASALook at the map above. Which of the following statements is true?A.Venezuela is located at number 5.B.Peru is located at number 4.C.Brazil is located at number 3.D.Argentina is located at number 6.Please select the best answer from the choices providedABCD PLZ PLZ I NEED THIS TODAY!!A line passes through (4, 5) and (8, 9). Which equation best represents the line? (4 points) A.y = x + 1B.y = 1C.y = 2x + 1D.y = 5x + 8