18. Lab Summary - Explain how this experiment models a cell membrane. Use the
following terms in your explanation: selectively permeable, hypertonic, diffusion, indicator.

Answers

Answer 1

Answer:

Cell membrane is considered as boundary of the cell.

Explanation:

Cell membrane is the boundary of the cell which is selectively permeable that allows the micro-nutrients, water and gases like oxygen and carbondioxide etc through the process of diffusion. When the water goes inside due to diffusion it is the indicator that there is less quantity of water present inside the cell as compared to the external environment, this phenomena is called hypertonic.


Related Questions

Which organelle stores genetic information? (4 points)

Chloroplast
Golgi apparatus
Nucleus
Ribosome

Answers

Answer: the nucleus

Explanation: think of it as the brain of the cell it holds all of the information to control the cell

Answer:

The nucleus.

Explanation:

The nucleus has very important roles to play. As it contains genetic material, it coordinates cell activities like protein synthesis and cell division.

What would happen to an ecosystem if the biomass of primary consumers was higher than the biomass of producers?

Answers

Answer:

It would be destroyed soon...!

Explanation:

What are the two different autotrophs and which is more common on our planet? PLEASE HELP!!

Answers

Answer:

Photoautotrophs use light energy to make food for themselves, and chemoautotrophs use chemicals energy in deep sea vents. Photoautotrophs are more common..

Explanation:

Someone just deleted my points and BRAINLIEST

what is the difference between the hydrogen bonds holding the nitrogenous bases together in the DNA structure ?

Answers

Answer:

Explanation:

Chemical structures of the five nitrogenous bases are shown below. ... Adenine and guanine are purine bases found in both DNA and RNA. ... Nucleosides have slightly different names than their nitrogenous base parents, and depend upon

how would a drug that increases sensitivity of cells to insulin help restore blood glucose homeostasis? ​

Answers

Answer:

Explanation:

Insulin helps the cells absorb glucose, reducing blood sugar and providing the cells with glucose for energy. When blood sugar levels are too low, the pancreas releases glucagon. Glucagon instructs the liver to release stored glucose, which causes blood sugar to rise.

16. ) A ___ is the structure that contains the DNA of the cell.

a.) centrosome
b.) chromosome
c.) centromere
d.) vacuole
e.) centriole

Answers

Answer:

the closest answer is b.

Explanation:

The nucleus contains most of the DNA in a cell and this DNA is called the chromosomal DNA.

Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure. Thus, option B is correct.

What is the role of chromosomes?

DNA, the cell's genetic material, is kept in the nucleus. In the nucleus, DNA is often found wrapped up and linked to a variety of histone proteins in a structure called chromatin that is loosely contained.

Chromatin coils tightly and condenses to produce chromosomes just before a cell divides. A DNA molecule called a chromosome is where an organism's genetic code is located.

When a cell is not dividing, chromosomes cannot be seen in the nucleus, not even under a microscope.

Therefore, a chromosome is the structure that contains the DNA of the cell.

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forensic science question

During which stage of postmortem decomposition do the eyes first become cloudy?

a. dry decay

b. initial decay

c. putrefaction

d. black putrefaction

Answers

Answer:

Initial Decay

Explanation:

Usually happpens around 2-3 hours after death

Answer:

B. Initial Decay

3. What was the first shoe he designed
Tinker

Answers

Answer:

Designs the Air Jordan 3, the first of his sneaker designs with Michael Jordan. The sneaker’s design and its popularity arguably saves Nike’s relationship with Jordan and keeps him from jumping to rivals Adidas.

12. What are the top 3 most common new case cancer types? What are the top 3 most
common causes of death cancer types?
Your answer
PLEASE HELP ASAP

Answers

Answer:

Breast, Colorectal and Lung cancers are the most common. Smoking and Tobacco. Diet and Physical Activity. Sun and Other Types of Radiation are the most common causes of cancer.  

Explanation:

I think this is what you need, if not could clarify a bit more in the question.

True or False? Toxins accumulate in the tissue of organisms

Answers

false I think or it's true

Explanation:

i don't think this is helpful srry

Can someone help me please?!❤️

Answers

Answer: Oxygen produced by photosynthesis.

Explanation: Breathing things produce carbon dioxide while plants produce oxygen.

Answer:

You are right it is D.

Explanation:

You got it.

In your body, where can you find protein?

Answers

Answer:

Protein is found throughout your entire body.

Answer: Protein is found throughout the body—in muscle, bone, skin, hair, and virtually every other body part or tissue. It makes up the enzymes that power many chemical reactions and the hemoglobin that carries oxygen in your blood.

Explanation: Hopefully this helps !

Which of the following is a function of the cell membrane?

Answers

Answer   first option

Explanation:

4. How do the finches on the different Galapagos Islands differ from each other?
Explain why.

Answers

On the Galapagos Islands, Darwin also saw several different types of finch, a different species on each island. ... Finches that ate small nuts and seeds had beaks for cracking nuts and seeds. Darwin noticed that fruit-eating finches had parrot-like beaks, and that finches that ate insects had narrow, prying beaks.

A student wants to create a liquid volcano. The student observes bubbles in the soft drink prior to opening it.
The student first proceeds to open the soft drink bottle and place it on the floor.
Next, the student drops candy tablets into the drink using a rolled piece of paper so that the tablets are able to fall into the drink continuously. The student notices a very powerful reaction as the drink fizzes and starts to bubble.

In this scenario, what would be the catalyst?

Answers

Answer:

b

Explanation:

Answer:

The candy tablets being added to the drink. (A)

Explanation:

edge 2020

how many neutrons does oxygen have?

Answers

Answer:

Oxygen has eight neutrons

Answer:

they have 8 neutrons

Explanation:

hi can someone pls help me

Answers

Answer:

B

Explanation:

Which best describes the following impacts: water storage, clean energy, and flood prevention?

Answers

Answer: Positive impacts of dams on society

Explanation: I just took the quiz ;)

Answer:

D. positive impacts of dams on society

Explanation:

E2020 other dude was right

What pathway uses fat reserves to produce ATP?
aerobic respiration
anaerobic respiration
creatine phosphate

Answers

Answer:

Aerobic Respiration

Hope this helps :)

Answer:

Aerobic Respiration

Explanation:

how does a fire prevention plan benefit your workplace​

Answers

Answer : I believe that it benefits it because you will know what how and where to go if there were a fire in the building.

Explanation:

Answer:

a lot

Explanation:

cause fires are wild when they are not extinguished on time.

what's the difference between budding and binary fission in reproduction of organisms​

Answers

Answer:

Budding is found in eukaryotes. The main difference between binary fission and budding is that duringbinary fission, parent organism isdivided into two daughter organismsby evenly separating the cytoplasm whereas, during budding, a neworganism is formed from the existingorganism by sprouting out.

b. Why is there a huge demand of professionals in the field of agriculture​

Answers

Answer:

There is an increase in demand for higher quality and quantity of food and other products.

Explanation:

There is an increase in demand for higher quality and quantity of food and other products. So, there is a huge requirement for technological innovation.  Investment is needed in research and development to develop crops that are pesticide-free, resistant to disease, and able to face various weather conditions.  Vertical farming and carbon-capture technology can be used to meet growing world food demands.

what goes in light independent

Answers

Answer:

- Captures energy from sunlight

- Takes place within and across the membrane of the thylakoids.

Compare and contrast DNA and RNA in terms of structure and nitrogenous bases.

Answers

Answer:

Explanation:

DNA is a long polymer with deoxyriboses and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. RNA is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.

pleaseee helppp!!!! please and thxxx:)​

Answers

Answer:

Prokaryotic Cells are single celled, Do not have a nucleus and do not have organelles (mitochondria etc). Their DNA are stored in the cytoplasm. Eukaryotic cells have a nucleus that contains DNA. They have organelles and exist in more than one types of organisms.

Explanation: Plz give me a brainliest, thanks

Elements in the same period have the same ________________________.

Answers

Answer:

Elements in the same period all have the same number of valence electrons.

Explanation:

"Elements present in horizontal rows are called as periods so elements belonging to the same period have same number of shell as the electrons are added in the same shell of the element."

Answer:

All of the elements in a period have the same number of atomic orbitals.

Explanation:

For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons. As you move down the table, every row adds an orbital.

please help me if you can right answers please

Answers

I’m not sure I think it’s c tho
I believe it’s A. Active transport is the opposite of diffusion. Diffusion is trying to get from a high to a low concentration gradient. Active transport uses energy to get particles from a low concentrated gradient to a higher concentrated gradient. This is most commonly used in digestion. Some nutrients are actively transported from the gut to the blood which is vital for us humans to not starve.

Which of the following is a chemical property of iron?
A. Iron corrodes in moist air.
B. Iron is soft when pure.
C. Iron melts at 1808 K.
D. Iron's density = 7.874 g/cm3

Answers

Answer:

A

Explanation:

Iron corrodes in moist air. When iron gets exposed to air, it reacts with oxygen molecules to form rust. Rust degrades the quality of iron. Therefore, methods of protection from rusting like, Barf's protection, Sacrificial protection etc. are carried out.

Iron corrodes in moist air is a chemical property of iron. Hence the correct option is A.

A chemical property of iron is its ability to corrode in moist air. Corrosion is a chemical reaction that occurs when iron reacts with oxygen and moisture in the air, resulting in the formation of iron oxide, commonly known as rust. This chemical property of iron is due to its reactivity with oxygen and can lead to the degradation and weakening of iron-based materials over time.

Corrosion is a chemical process that involves the reaction of a metal with its environment, typically in the presence of moisture or oxygen. In the case of iron, when it comes into contact with moist air, it undergoes a chemical reaction known as oxidation. This reaction causes the formation of iron oxide, commonly known as rust.

The corrosion process begins when iron reacts with oxygen in the air, a process called oxidation. This reaction leads to the formation of iron(III) oxide, which is commonly seen as the reddish-brown coating known as rust. The presence of moisture accelerates the corrosion process by providing the necessary medium for the reaction to occur.

Hence the correct option is A.

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Explain how wind erosion might effect exposed rock

Answers

Answer:

Yo

Particles moved by wind do the work of abrasion. As a grain strikes another grain or surface it erodes that surface. ... As wind blows from different direction, polished flat surfaces create a ventifact. Exposed rocks in desert areas often develop a dark brown to black coating called desert varnish.

Hope it helps you.....

Explanation:

How might the descruction of rainforests affect the balance of gases in Earth's atmosphere?

Answers

Answer:

If you destroy rainforests, there will be less oxygen in the air and more carbon dioxide. Trees and plants produce oxygen so that is why.

Explanation:

Answer:

a

Explanation:

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