Biology Middle School

In science class, your teacher opens a perfume bottle to model cell transport. She asks the students to identify the type of cell transport and to explain the method of movement. Which of the following is the best explanation for this model? *

A.) This model demonstrates osmosis, because the perfume molecules are moving from an area of high concentration to low concentration.
B.) This model demonstrates osmosis, because the perfume molecules are moving from an area of low concentration to high concentration.
C.) This model demonstrates diffusion, because the perfume molecules are moving from an area of high concentration to low concentration.
D.) This model demonstrates diffusion, because the perfume molecules are moving from an area of low concentration to high concentration.

Answers

Answer 1
C. The perfume molecules are diffusing around the room. As these molecules drift from each other they begin to diffuse around other gases like oxygen. This is why when you spray a perfume right in front of you it’s too concentrated (or too much) to breathe in but once the perfume is able to diffuse and spread out it is able to be smelled without hurting your nose!
Answer 2
it’s diffusion. diffusion goes from an area of high concentration to an area of low concentration. so the answer is c.

Related Questions

Can you make water light enough to sink a cork? Explain.

Answers

yessir becaose it helps with tye omemnet of yhe blood veseeds while it also help s u breathe eastung and sinking not nice ❤️ hope this helpoed!

HI GIVING BRAINLIEST Are there nuclear reactions going on in our bodies?

Answers

Answer:

Yes

Explanation:

Yes, there are nuclear reactions always occurring in our bodies, but there are not that many of them compared to the chemical reactions, also they do not affect our bodies much.

Yes there are...........

hi i need a definition of adaptation, camouflage, habitat, hibernation, migration, mimicry, niche, predator, prey, reproduction, and species. !!! I will give you that crown thing if you get this correct thank you !!!

Answers

Answer:

species is a group of organisms of common ancestry able to reproduce only among. reproduction is Formation of new cells or a new individual. adaptation is A changing to fit new conditions. niche is ecology) the status of an organism within its environment and community (affecting its survival as a species). camouflage is camouflage. mimicry is Gaining protection by looking and acting like a different species. migration is Form of relocation diffusion involving permanent move to a new location. hibernation is A state of extremely low metabolism and respiration, accompanied by lower-than-normal body temperatures. predator is An animal that hunts other animals for food. prey is Animal hunted or caught for food. habitat is Place where an organism lives. organism is any living thing made up of one or more cells. invasive species is plants and animals that have migrated to places where they are not native. last non native species is not from an area, usually harmful.

Explanation:

Answer:

1. the action or process of adapting or being adapted

2. an animals natural coloring or form that enables it to blend into its surroundings

3. the natural home or environment of an animal,plant,or other organisms

4. the condition or period of an animal or plant spending the winter in a dormant state

5. seasonal movement of animals from one region to another

6. the action or art of imitating someone of something

7. a position or role taken by a kind of organism within its community

8. A animal that naturally preys on others

9. an animal that is hunted and killed by another for food

10. the production of offspring by sexual or asexual process

11. a group of living organisms consisting of similar individuals capable of exchanging Gene's or interbreeding

Which of the following systems use the cardiovascular system for the transport of materials? excretory system digestive system endocrine system respiratory system immune system

Answers

Answer:

Endocrine System

Explanation:

The answer is Endocrine System

Ill vote branlliest!
How did migration lead to the population of the world?

Answers

The more people that came to a certain place gained its population, while the people that left decreased the population .
Climate Change Some of the biggest human migrations coincided with major changes in climate, according to a new analysis. Researchers say early humans set out in search of climates where more food was available. And some populations stayed put in certain locations because barriers like glaciers blocked their progress.

What happens when a cell reaches equilibrium with its environment?

A.) Nothing enters the cell
B.) Nothing leaves the cell.
C.) Nothing enters or leaves the cell.
D.) Molecules enter and leave the cell at the same rate.

Answers

Answer:

D

Explanation:

Even when equilibrium is reached, particles of a solution will continue to move across the membrane in both directions. However, because almost equal numbers of particles move in each direction, there is no further change in concentration. Hope i did it right _-_

D. Molecules enter and leave the cell at the same rate I think probably

MULTIPULE ANSWERS!!!!! Which of the following systems use the cardiovascular system for the transport of materials? excretory system digestive system endocrine system respiratory system immune system

Answers

Answer:

digestive, endocrine and respiratory sytem

Explanation:

all transport materials around the body using the circulatory system (cardiovascular system).

the digestive system uses it to transport glucose and other nutrients from the digestive system to the cells.

the endocrine system uses it to transport hormones.

the respiratory system uses it to circulate blood and oxygen throughout the body

Answer:

I took the test the person above is right

Explanation:

i need help with the reasoning part

Answers

Answer:

Just combine your answer with your evidence and you got your reasoning.

Explanation:

I hope this helps :))

the reasoning would be, the ducks need to have webbed feet to help them survive in their environment. with the reasoning you just have to give reasons on why someone or something has someone or something.

BRAINLIEST Can a ocean wave freeze and i give brainliest and i want friends

Answers

Ocean water freezes just like freshwater, but at lower temperatures. Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit, because of the salt in it. When seawater freezes, however, the ice contains very little salt because only the water part freezes. It can be melted down to use as drinking water.

Answer:

A wave can freeze, but it would need a lower, more intense cold to freeze it. This is because it has little salt. And for 2, sure? I don't know?

Explanation:

Is water wet????? Is it or not?

Answers

Water is not wet. Wet is a feeling
i’m pretty sure it’s a liquid so yes?

If an electron is gained, the atom has a _____ charge.

negative
positive

Answers

Answer:

negative

Explanation:

electrons have a charge of -1

Answer:

with a negative charge

Explanation:

HIII GIVING BRAINLIEST what is a 2 animal that don't have legs

Answers

Answer:Snake/worm

Explanation:

Heyoo

Snake and fish?

HII GUYS GIVING BRAINLIEST what is a person who studies animals called

Answers

If I’m correct it is a zoologist:)

Answer:

a person who studies animals is called a zoologist.

thank you for helping if you do

Answers

Answer:

B

Explanation:

These fish like to move from one body of water to another in search of food or a better living space

Answer:

its A

Explanation:

Do people hunt wolverines? Just put a yes or a no. For step by step explanation, just say anything.

Answers

People do hunt wolverines sometimes :(

In a step by step format, write about the process of the blood flow as it enters the heart until it leaves the heart. It should be at least 150 words.

Answers

First, unoxygenated blood enters the right atrium from the superior and inferior vanae cavae. Next the blood flows through the tricuspid valve into the right ventricle. From the right ventricle, the blood flows through the pulmonic valve into the pulmonary artery. The right and left pulmonary arteries then carry the unoxygenated blood to the right and left lungs for oxygen. The blood picks up a fresh supply of oxygen & releases carbon dioxide as waste. The now oxygenated blood flows through the pulmonary veins from the lungs into the left atrium. From the left atrium the blood flows through that bicuspid or mitral valve into the left ventricle. The left ventricle contracts, thus forcing blood through the aortic valve into the aorta for the distribution to the systemic circulation

How are ciliated epithelial cells adapted to their function?


Super urgent best answer gets brainliest

Answers

Answer:

Ciliated cells are adapted in the respiratory tract to form an epithelial lining of coordinated metachronal ciliary activity that provides the propelling force for the transport of mucus along the airways.

HOPE IT HELPS !!

ciliated (meaning, they have cilia) epithelium (lining tissue) found in the lung facilitates the removal of foreign particles and debris from the lung. These cilia beat in a coordinated fashion to move molecules from the lower respiratory tract up to the trachea. Ciliated cells are adapted in the respiratory tract to form an epithelial lining of coordinated metachronal ciliary activity that provides the propelling force for the transport of mucus along the airways. This mechanism is central to the maintenance of patent airways and pulmonary homeostasis.
Cilia are tiny hair like structures on the surface of the cell. ... The hairs sweep hair, mucus, trapped dust and bacteria up to the back of the throat where it can be swallowed. Ciliated columnar epithelium is composed of simple columnar epithelial cells with cilia on their apical surfaces. These epithelial cells are found in the lining of the fallopian tubes and parts of the respiratory system, where the beating of the cilia helps remove particulate matter. It is covered with epithelial cells that protect your body by being a barrier between your internal cells and the dirt and microbes in the environment. They also are able to stretch so you can move your fingers and arms into many positions.

ILL VOTE BRAINLLEST!!!!!!
What are the benefits of living in a permanent settlement vs. a nomadic settlement? Include at least three benefits.

Answers

Answer:

One of the most obvious advantages is being able to grow and harvest crops on land as a result of agriculture, rather than relying on natural landscapes to provide. Another is safety and security — you do not have to traverse potentially dangerous routes and can defend your land from your home. Finally, urban cultural centres are not possible when moving from place to place as you have to take everything with you. Permanent settlement allows advanced civilisations to develop.

Answer:

One of the most obvious advantages is being able to grow and harvest crops on land as a result of agriculture, rather than relying on natural landscapes to provide. Another is safety and security — you do not have to traverse potentially dangerous routes and can defend your land from your home. Finally, urban cultural centers are not possible when moving from place to place as you have to take everything with you. Permanent settlement allows advanced civilisations to develop.

Explanation:

Is a compound is a pure substance?
* I"m just wondering,

Answers

Answer:

yes

Explanation:

Compounds: are pure substances that are made up of more than l type of atom and can be broken down or decomposed into its individual elements by chemical methods, but cannot be separated by physical methods. The ratio of the elements in a compound are always constant. (Water is always 11 % Hydrogen and 89 % oxygen).

Answer:

Yes, it is.

Explanation:

Because there's no physical change that can separate compounds into more than one kind of substance.

The current science of classifying living organisms was developed by Mr. _____. Lavoisier Newton Linnaeus

Answers

Answer:

Antoine

Explanation:

Answer:Carl Linnaeus

Explanation:

Question in picture WILL MARK BRAINLIEST!!!!

Answers

Answer:

extinction and change in a species community

Explanation:

if a change happens in a species community it takes a while for them to readjust to the new community.

Second one B because if the environment changes the species would have to adapt and they will most likely lose their habitats

Complete the following analogy. General is to army as nervous system is to body. TRUE OR FALSE

Answers

Answer:

true

Explanation:

true hope it helps :))

To keep food from entering your lungs, the body's digestive and respiratory systems must work together.

Answers

Answer:

I'm not sure if not sure what the question is but I'll take a stab and say it was a true/false. The answer is true.

Explanation:

There's a tiny flap of tissue and it covers the airway when we drink or walk. Sometimes it may spasm or contract late and this is why sometimes people say, "It went down the wrong pipe!" hope this helps.

Your answer to this is true

WILL BE MARKED BRAIN LOL

Answers

Answer:

Epithelial

Explanation:

i hope thats right sorry if its not

Epithelial that’s the answer it’s correct

I am a big oof lolllllllllllllllllllllllll

Answers

Answer:

yes the answer is yes

Explanation:

Answer:is there even a question?

Explanation:

what is the answer to this question

Answers

if the width is increased it would be harder to stretch more force will be needed to stretch it

Answer:

Explanation:

you already told me that

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