what is a cell wall and what are its functions ​

Answers

Answer 1

Answer:

a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose.

Explanation:

i hope this helps!


Related Questions

During which phase of mitosis do the chromosomes pull away from the middle of the cell?

Answers

In Anaphase of mitosis chromosomes pull away from the middle of the cell.

During this period the replicated chromosomes are split and moved to the opposite poles of the cells.

What is mitosis?

It is the process by which cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division.

What are chromosomes?

It is along DNA molecule with part or all of the genetic material of an organisms.

To know more about mitosis here

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A molecule of oxygen gas contains two:
O molecules
O elements
O atoms

Answers

Answer:

O atoms

Explanation:

:)))

A molecule of oxygen gas contains two atoms of oxygen bonded together.

Answer: your answer will be C

⚠️Second time posting this⚠️
the factors that control genes are called "alleles".
True
or
false

Answers

Answer

Explanation:

I think its true

Atmospheric nitrogen, in its gaseous form, is useful to plants. *
True
False

Answers

Answer:

true

Explanation:

Answer:

False.

Explanation:

Atmospheric Nitrogen, in its gaseous form, is harmful to Plants and Animals.

Have a great day! (:

A student states that petrification occurs when pore spaces in an organism's remains are filled with minerals that precipitate out of solution. What is wrong with this statement?

A.
Permineralization occurs when pore spaces in an organism's remains are filled with minerals that precipitate out of solution.
B.
Petrification occurs when once-living tissues are replaced by minerals, preserving the organism's structure.
C.
Both A and B describe errors in the statement.
D.
Nothing, this statement is correct as is.

Answers

Answer:

C. Both A and B describe errors in the statement.

Explanation:

In fossilization i.e formation of fossils, two terms are used as follows: permineralization and petrification.

- Permineralization is a process whereby the pore spaces of an organism's remains are filled with mineral matter that precipitates from lake and ocean solutions.

- On the contrary, petrifaction or petrification is the process whereby a once-living tissue (matter) are REPLACED by minerals, hence, preserving the organism's structure by turning it into a stone (petros).

According to this question, the student mixed up their definitions by giving the definition of permineralization instead, however, options A and B have described the errors associated with the statement.

What are 3 lines of evidence that corroborate the theory of evolution?

Answers

Answer:

Lines of Evidence supporting theory of evolution by natural selection: Fossil evidence, Biographical evidence and Anatomical evidence.

Explanation:

I majored in Biology

which describes a eukaryotic cell,but not a prokaryotic cell?

Answers

Answer is c it is surrounded by cell membrane

what would be the most beneficial towards maintaining equilibrium in an ecosystem over a long period of time?
a)organisms imported by humans from other environments
b)a sudden change in climate
c) a diversity of organisms
d)predators eliminated from the food chains

Answers

Answer:

c) a diversity of organisms

Explanation:

Biodiversity refers to the number of different species of animals,plants and microorganisms.Biodiversity increases ecological stability in changing environments.Biodiversity reduces competition ,provide more food resources,increases ecosystem productivity etc.

PLEASEE help me answer this question!??

Answers

Answer:

a or b.

Explanation:

it can be in ts regular form solid or it just formed like a liquid

Answer:

B. liquid I think.

Explanation:

or solid bc coal is a solid.

thats all i got.

Answer this please I promise 30 points + mark as brainliest ( only relevant answers )

Answers

Answer:

A) Group X = Rose ,mango tree,marigold,palm tree

B) This is the answer of group X =Rose ,mango

This is the answer of group Y =Fern ,pine trees

Explanation:

Answer:

jen, from my heart im saying i lu.v u for real

its been almost 5 months weren't having the same old c.hat we used to have.

ik that ur scared to c.hat with  me since the day ur mom caught u

but still the old memories keep coming into me how many times i try to forget u, i still lu.v u jen still lu.v u

and as i made u a promise that one day we'll meet, i still keep thqat word and that day even if its just one day, we're gonna enjoy the max we could

i'll be waiting for that moment and i hope u would be too...

still lu.v u :(  .......

How many chlorine atoms are there in the molecule NiCl2

Answers

Answer:

2, that’s what the 2 means.

Explanation:

PLEASE HELP ME - In 1839, Schleiden and Schwann began formulating a theory of cells and their role in living organisms. Over time, cell theory has been updated. Modern theory is summarized below. All known living things are made up of cells. The cell is the structural and functional unit of all living things. All cells come from pre-existing cells by division. The flow of energy occurs within cells. Cell theory explains all of the following except a. the growth of animals. b. how viruses require the cells of living organisms to survive. c. how bacteria reproduce. d. the storage of chemical energy in plant cells.​

Answers

It made it possible to actually see cells. Explanation: With the development and improvement of the light microscope, the theory created by Sir Robert Hooke that organisms would be made of cells was confirmed as scientist were able to actually see cells in tissues placed under the microscope.

Thank You so Much

your amazing have a great life

What are the advantages and disadvantages of a honey bees sexual reproduction

Answers

Answer:I just learned this.

Explanation: The Advantage is that they have plant pollination and honey.

The cell membrane is made up of a lipid bilayer as shown in the model. Which of the following describes the structure and function of the cell membrane?
56 points!!!!!!

Answers

Answer:

The hydrophilic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophobic tails form an oily layer inside the membrane that keeps water out of the cell

Explanation:

Cell membrane is selectively permeable in nature. The hydrophilic head groups of the lipid molecules are exposed to the outside of the cell, which is a water-like environment and hydrophobic tails form an oily layer inside the membrane. Thus, correct option is A.

What is Plasma Membrane?

Plasma membrane is also known as the cell membrane. It is found in all types of cells that separates the interior of the cell from the outside environment. In bacterial and plant cells, a cell wall is also found which covers the cell membrane.

The cell membrane consists of three classes of amphipathic lipids: phospholipids, glycolipids, and sterols. Plasma membrane is selectively permeable in nature, it allows only some material to pass through it while blocks other material from entering through it.

The portions of the integral membrane protein found inside membrane are hydrophobic, while portions which are exposed to the cytoplasm or extracellular fluid tend to be hydrophilic in nature. Molecules that are hydrophobic can easily pass through the plasma membrane while hydrophilic particles cannot pass through the membrane easily.

Therefore, correct option is A.

Learn more about Plasma membrane here:

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According to Vince Carter, "...the most important aspect of getting his degree was the sense of accomplishment it brought. " Use information from the selection and your own ideas to explain what he meant by this statement.

Answers

Answer:

the hard work he went through

A _______________ from the sun hits chlorophyll and excites an electron, known as __________________________________.

Answers

Answer:

Photon, light dependent reaction of photosynthesis

Explanation:

Photosynthesis is the process by which green plants make their own food in the presence of sunlight and water.

There are two steps of Photosynthesis that include light dependent reaction and light-independent reaction.

In light dependent reaction, a photon from the sun is absorbed by the green pigment in leaves called chlorophyll that allow the electron to excite from ground energy level to high energy level. It converts the solar energy into chemical energy and called light dependent reaction of photosynthesis.

Hence, the correct answer is "Photon, light dependent reaction of photosynthesis".

(GIVING BRAINLIEST!!)


James made the following table to compare the common characteristics of planets. Which of the following would best replace X?


A) Asteroids

B) Comets

C) Moons

D) Stars

Answers

Answer: moons

Explanation:

Mars and Neptune both have moons

Answer:

hi answer is moons

Explanation:they have moons :)

In what ways is the composition of the sun different from the Earth? Choose all that apply.
The Sun does not have continents.
O The Sun has a thick, solid core.
O The Sun does not have a solid surface
The Sun does not have a solid core.
The Sun has continents known as plasma zones.

Answers

Answer:

1,3,4

that's my answerrrr

List some animals affected by soda cans and plastic bottles

Answers

Answer:

turtles, fishes, birds, whales, cats, dogs, really any animal can be affected

Explanation:

(any animal in the ocean) mark as brainliest plz

⦁ In what stage of an animal’s life cycle do most cells differentiate?

Answers

Answer:

Reproduction

Explanation:

Answer:

Animals and plants produced by sexual reproduction begin life as a single cell, a fertilised egg or zygote . These cells must divide by mitosis to produce a multicellular organism.

Are gender traits completely a result of societal expectations?

Answers

Answer:

No. Gender traits in humans are largely determined by biophysical processes. There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary. But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to. This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development.

What is the function of a phospholipid bilayer

Answers

Answer:

Phospholipid bilayers create a selectively permeable barrier to the movement of ions and molecules important for cellular function.

Answer: The phospholipid bilayer acts as a barrier to the passage of molecules.

What is the difference between a detritivore and a decomposer?
A.While detritivores consume animals, decomposers only consume plants.
B. While detritivores feed on dead organic matter, decomposers actually break down dead or decaying organisms.
C. While detritivores consume both plants and animals, decomposers only consume dead animals.
D. While detritivores are heterotrophic, decomposers are autotrophic.

Answers

What are detrivores?

Detritivores are organisms that feed on the organic waste of dead plants and animals

What are decomposers?

Decomposers are organisms that break down dead or decaying organisms; they carry out decomposition, a process possible by only certain kingdoms, such as fungi. Decomposers are the organisms that decompose dead plants and animals.

Difference between detrivores and decomposers

Option C is the the correct answer

While detritivores consume both plants and animals, decomposers only consume dead animals.

Read more about organisms

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Answer:

While detritivores feed on dead organic matter, decomposers actually break down dead or decaying organisms.

Explanation:

The answer explains itself. It is accurate information. :) Have a good day!

What happens to the cells at the edges of an injury when a cut in the skin or a break in a
bone occurs?

Answers

Explanation:

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When an injury such as a cut in the skin or a break in a bone occurs, cells at the edges of the injury are stimulated to divide rapidly. This action produces new cells, starting the process of healing.

What two elements of weather are affected by air masses

Answers

Answer:

The air masses separated by a front usually differ in temperature and humidity. Cold fronts may feature narrow bands of thunderstorms and severe weather, and may on occasion be preceded by squall lines or dry lines. Warm fronts are usually preceded by stratiform precipitation and fog.

Cold fronts and warm fronts

Which is required for sexual reproduction

Answers

Answer:

meiosis

Explanation:

meiosis is used to produce gametes for sexual reproduction

Answer:

Meiosis, and female and male

Explanation:

Sexual reproduction is a reproduction that requires a male and a female of the same species to contribute genetic material. Special cells called gametes are produced through meiosis, which halves the number of chromosomes in each resulting cell. These cells are called haploid gametes.

Fossil remains of Glossopteris (an extinct plant with large leaves) have been discovered in India and Australia. When they were living, all the Glossopteris were located together on land, but now the Glossopteris fossils are separated by an ocean. What could explain how these fossils got so far apart?

Answers

Answer:

Due to splitting of lands.

Explanation:

These Glossopteris fossils got so far apart from each other because of the splitting of super continent about 175 million years ago. Before 175 million years, India and Australia are attached to each other and these Glossopteris plants are present on these lands but with the passage of time, the lands of India and Australia split and go far away from each other so due to splitting of lands, these fossils got so far apart from each other.

Which model below shows a prokaryotic cells?

Answers

Answer:

Modle two as it is singular, simple with a flagellum

Explanation:

please answer asap! anatomy final exam!! thanks:)
Describe what lymph is and how it travels throughout the body. What would happen if the lymphatic system did not drain interstitial fluid from the body?

Answers

Answer:

A fluid that flows through the lymphatic system is called lymph. it travels when you breathe and move your muscles the lymph continuously get pushed towards the heart from the outer reaches of your body. if the lymphatic system didn't drain interstitial fluid then the lymph fluid would build up in the body's tissues, making them swell.

1. DNA: ATACGAAATCGCGATCGCGGCGATTCGG
mRNA:
Codon:
Anticodon:
Amino Acids:

Answers

Answer:
mRNA: UAUGCUUUAGCGCUAGCGCCGCUAAGCC

CODONS: AUG-GAA-AUG

AMINO ACIDS: METHIONINE-LEUCINE


Explanation: hope this helps
i am so confused is this an actual question or is it just random letters?-
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