Which of the following correctly describes the function of the cell wall?


The cell wall provides rigid support and protection for the cell.


The cell wall is a network of fibers inside the cell that gives the cell its shape.


The cell wall is a barrier that allows certain substances into and out of the cell.


The cell wall is a series of folded membranes that produces and distributes proteins in the cell.

Answers

Answer 1
the cell wall provides rigid support and protection for the cell
Answer 2

The cell wall is a layer outside the cell membrane and provides rigid support and protection to the cell. So, the correct option is A.

What is a cell wall?

A cell wall is a thick and rigid layer composed mainly of polysaccharides present outside of the cell membrane that protects the cell. A cell wall is a part of a cell but it is not a living component. Unlike the cell membrane, a cell wall is totally permeable in nature.

The cell wall of different kinds is present in plants, fungi and prokaryotes. Animal cells do not have a cell wall.

The cell wall in fungi is made up of a polysaccharide called chitin. This component is also present in the exoskeletons of arthropods.

The cell wall in the case of prokaryotes is made of a polysaccharide called peptidoglycan. Prokaryotes have 2 layers in their cell wall.

Plants contain cell walls made of cellulose. The plant cell wall has 3 layers. These are pectin, cellulose and hemicellulose. It also contains a small number of minerals.

The materials required for the formation of the cell wall are a special kind of polysaccharide called structural polysaccharides. The monomer for these polysaccharides is glucose.

Therefore, the correct option is A.

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Related Questions

Hi, how are you? I hope you are well. Can you answer this question? What does it mean to say that a rock is porous?

The rock has many holes.
The rock has few holes.
The rock has tiny holes.
The rock has big holes.
Water can easily flow through the rock.
Water cannot easily flow through the rock.

Answers

not sure if it is multiple choice but

the answer if it is not multiple choice is i believe the rock has many holes

if it is multiple choice u should also select water can easily flow through the rock

not sure if i am right

The main source of food for Southern Resident killer whales is __.
Salmon
Seal
Dolphin
Shark
PLEASE HELP ASAP

Answers

Answer:

=) salmon

Explanation:

The primary cause of these orcas deaths is starvation. The southern residents—which include the J, K, and L-pods—survive mainly on Chinook salmon, another species in decline due to overfishing, hydroelectric projects, and the harbor seals that get to them before they make their way to Puget Sound

Answer:

SALMON

Explanation:

primary cause of these orcas deaths is starvation. The southern residents—which include the J, K, and L-pods—survive mainly on Chinook salmon, another species in decline due to over fishing, hydroelectric projects, and the harbor seals that get to them before they make their way to Puget Sound. (pt.2)

Which component of the blood is part of the body’s immune system?

Answers

Answer:

White Blood Cells

Explanation:

what are two limits to cell growth

Answers

Two limits to cell growth is by rates of protein synthesis and by the folding rates of its slowest protein

Whats an explanation for the cycling of matter and flow of energy in
anaerobic conditions>

Answers

Answer:

Energy drives the cycling of matter within and between systems in aerobic and anaerobic conditions.

Explanation:

What Describes the layer directly beneath Earths plates

Answers

Answer:

The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth. The mantle is the layer located directly under the sima. ... The mantle is composed of very hot, dense rock.

Explanation:

Answer: This layer would be called the asthenosphere.

Can someone help? I don’t understand this at all.

Answers

Answer:

1. Ff and Ff and I thinks it's 75%

I think genotypic ratio is 3:4

2. Pp and pp and I think it's 50%

I think genotypic is 2:4

Explanation:

Haven't done this since 7th so I hope it helps

I don't understand the phenotypic ratio though sorry

Female killer whales stop reproducing in their ____. 50s-60s, 60s-70s, 40s-50s, 30s-40s

Answers

Answer:

20

Explanation:

because fasting is missing

Answer:

30s and 40s

Explanation:

it is the right answer i learned that

When the cell divides from from 1 to 2 and 2
to 4 and 4 to 8 and so on, what process is
this?

Answers

The process you asked about in your question is called Cell Division

Answer:

Mitosis.

Explanation:

                     

How is a scientific law different from a scientific theory?

A.
A theory cannot be disproved but a law can be disproved.
B.
A theory becomes a law after a long period of time has passed.
C.
A theory is why something happens and a law is how something happens.
D.
A theory is used for biology and chemistry and a law is used for physics.

Answers

the correct answer is c

A series of two-point crosses, involving 7 genes (a-g), were carried out, and the following recombination frequencies were obtained. Place the seven genes into linkage groups (where a linkage group is any group of genes that are genetically linked to each other). Within each linkage group, determine the order of genes and the distances between them.
Genes % recombination Genes % recombination
a-b 50 c-d 50
a-c 50 c-e 26
a-d 12 c-f 50
a-e 50 c-g 50
a-f 50 d-e 50
a-g 4 d-f 50
b-c 10 d-g 8
b-d 50 e-f 50
b-e 18 e-g 50
b-f 50 f-g 50
b-g 50

Answers

Answer:

Explanation:

Genes with recombination frequencies(RF) of 50 assort independently and are not genetically links together but gene that have less than 50 RF are genetically linked.

The Linked genes included

a-d 12 c-e 26

a-g 4 d-g 8

b-c 10

b-e 18

Starting the order from the most tightly linked to the least

a-g 4, genetic distance is 4cM

d-g 8 genetic distance is 8cM

b-c 10 genetic distance is 10cM

a-d 12 genetic distance is 12cM

b-e 18 genetic distance is 18cM

c-e 26 genetic distance is 26cM

Alma is walking in a park

Answers

Answer:

i like walking in a park

Explanation:

Same I like to walk in the park

How does Meg use the ultimate boon to conquer the power of IT

Answers

Answer: She discovers the power of love to fight the darkness of hate

Explanation:

In the book, A Wrinkle in Time, siblings Meg Murray and Charles Wallace along with their friend Calvin O'Keefe embark on a journey to a planet under the control of a dark force known as IT.

When they get there Charles is captured but the rest manage to escape and now Meg has to go back to save her brother. In the process of saving him she discovers that she must use the power of love for her brother to fight and  conquer the darkness of hate that the IT possesses. When she does so she is able to free her brother and they escape together.

how are unicellular and multicellular organisms different

Answers

Answer:

Unicellular organism are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organism use many different cells to function.

Explanation:

Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined and used to determine the actual allele frequencies in the population.

Required:
Is this population in Hardy-Weinberg equilibrium? Calculate the T and t.

Answers

Complete question:

Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined (TT = 0.56; Tt = 0.28; tt = 0.16) and used to determine the actual allele frequencies in the population. Is this population in Hardy-Weinberg equilibrium? Calculate the T and t.

Answer:

No, the population is not in H-W equilibrium

Explanation:

Due to technical problems, you will find the complete explanation in the attached file

What is the difference between an independent variable and a dependent variable? How are these different from constants?

Answers

The variables in a study of a cause-and-effect relationship are called the independent and dependent variables. The independent variable is the cause. Its value is independent of other variables in your study. The dependent variable is the effect.

Farmers can store food for when it is difficult to grow. True or false?

Answers

Answer:

True

Explanation:

Because my uncle was a farmer.

Answer:

ture

Explanation:

i think hope it is right

Replicated chromosomes are called
centromeres
homologous chromosomes
karyotype
sister chromatids

Answers

Answer:

Sister Chromatids

Explanation:

Before anaphase begins, the replicated chromosomes, called sister chromatids, are aligned at along the equator of the cell on the equatorial plane. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere.

Which statement best summarizes the role of households in the flow of
goods?
A. Households supply businesses with raw materials they need to
operate.
B. Households sell products created by businesses to other markets.
C. Households exchange money for products in resource markets.
D. Household expenditures flow to the product market in exchange
for products.

Answers

The statement best summarizes the role of households in the flow of goods is households exchange money for products in resource markets. Thus, option C is correct.

Who are the consumers among households?

The final consumers of the goods and services produced by the businesses are the households. According to their tastes and preferences, they create demand in the market. The businesses supplied and produced goods in response to customer demand. As a result, a nation's production line is determined by its households.

To run a business, workers are needed, and business owners, managers, and employees also have families. In return for labor, the business pays wages, which increase household income.

Therefore, A company's output may fall somewhere in the middle of these two ideas. A landscaping company, for instance, might offer a homeowner a service and sell them a tree as a product.

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Answer: House Hold expenditures flow.

Explanation: I’m doing the Quiz it 1 answer out of the 2 available examples, sorry if you get the other option it’s the best I can do.

role of the two components of the ribosomal complex.​

Answers

Answer:

The ribosome is a highly complex cellular machine. It is largely made up of specialized RNA known as ribosomal RNA (rRNA) as well as dozens of distinct proteins (the exact number varies slightly between species). The ribosomal proteins and rRNAs are arranged into two distinct ribosomal pieces of different size, known generally as the large and small subunit of the ribosome.

Explanation:


Where does the bloody deposit the
oxygen and nutrients?

Answers

Answer:

The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.

Order the following from largest to smallest:

chromosome
nucleus
nucleotide
DNA-histone complex
gene
cell double-helix

Answers

Explanation:

cell double-helix

gene

DNA-histone complex

nucleus

nucleotide

chromosome

A firefly uses chemicals in its body to produce a glowing body. What energy transfer is this?

Answers

Answer

Bioluminescence is a chemical reaction. It takes place inside the light-producing organ of a glowing creature. Fireflies, for example, make light in their abdomens. The chemical reaction produces energy in the form of photons.

Hope this helps! <3

In conservation plowing, why are dead weeds and stalks of the previous year's crop left in the ground?
a. to keep the soil from becoming too fertile
b. to reduce the amount of seed needed for the next year's crop
C. to retain moisture and hold the soil in place
d. to keep more organisms out of the soil

Answers

Answer:

to retain moisture and hold the soil in place.

Explanation:

this technology of putting dead plants on the soil under the plants and the area nearing the plants is called mulching.it is helpful in reducing the rate of evaporation and also reduces soil erosion.

Conservation plowing is achieved to minimise soil erosion. Thus, option C is correct.

What is soil erosion?

Soil erosion is the deterioration of the topmost layer of soil. The top fertile layer of the soil withers leaving the soil infertile.

It is a gradual naturally occurring phenomenon but can be accelerated with human interventions.

There are many factors responsible for soil erosion:

• Deforestation

• Excessive grazing

• Mining

• Construction work

• Drought and floods

Soil erosion negatively affects the crop yield and also clogs the water bodies. This is therefore harmful for the aquatic species. Dry and barren soil is more prone to floods.

Soil erosion should be minimized as it produces a negative impact on the ecosystem.

Soil erosion can be prevented by planting more number of trees. The roots of the trees help in holding the soil in its place.

Therefore, soil erosion should be checked to preserve the soil fertility.

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What is technology?
A. A way to apply science to solve problems
B. A type of scientific experiment
C. A political idea
D. A way to convince people

Answers

Answer:

a

Explanation:

i think its A because the rest font make sense

Answer: A

Explanation: the application of scientific knowledge for practical purposes, especially in industry

Eukaryotic cells have membrane bound organelles and DNA contained in a nucleus.
True
False

Answers

Answer:

True

Explanation:

Eukaryotic cells DO have membrane-bound organelles and a DNA contained in the nucleus which is different from prokaryotic cells which DO NOT have membrane bound organelles and normally do not have a nucleus.

Hope this helps! Let me know!

Answer

True

Explanation

I looked it up

Sea Lampreys, a jawless fish that feeds on other aquatic
animals, is considered a pest in the Great Lakes of
Michigan, An ecologist wanted to determine the
percentage of the Lake Trout population was affected by
the lamprey He captured and released hundreds of Lake
Trout making note which ones were being fed upon by the
Lamprey. The ecologist conducted this study over a 6
month period and determined that over half of the Lake
Trout population were affected by the Sea Lampreys.
What is the best Problem for this experiment?
w
Why are Sea Lampreys a problem in the Great Lakes?
What types of fish de the Sea Lampreys feed upon?
How are the Sea Lampreys getting into the Great Lakes?
What percentage of the Lake Trout are affected by the Sea Lamprey?

here it is for the person who commented on mine

Answers

Your answer would be Why are Sea Lampreys a problem in the Great Lakes?

In the text, it explains the answer for this question. For the other three questions, it's asking for a factor of the paragraph rather than the whole thing. The whole paragraph explains the answers for all of the questions, so it's best to ask why are they causing problems.

What is cancer? Explain what a doctor means when he or she says the cancer has “metastasized.” (Provide examples)

Answers

Answer:

A disease that causes cells to grow too rapidly

Explanation:

The cancer has spread to another part of the body where there originally wasn't any cancer. Ex: If someone was diagnosed with thyroid cancer and then later they're told the cancer has spread to their lungs

Cancer  is characterized by abnormal cell growth when a cell does not divide naturally, it is said to have metastasized, which means that the cancer has spread from one part of the body to another.

What is the significance of the cancer?

It is a type of condition where the person's normal cell growth is hampered, and it has a significant impact on an individual, leading to a wide range of symptoms such as pain and fatigue and increasing mental health issues and an example of metastasis is the brain cancer can move to the lungs and other parts. Due to the significant advancements in the diagnosis and treatment of cancer, an earlier stage can be detected and the later stage can be somewhat cured.

Hence, cancer is characterized by abnormal cell growth when a cell does not divide naturally, it is said to have metastasized, which means that the cancer has spread from one part of the body to another.

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6. The replication of chromosomes by eukaryotes occurs in a relatively short period of time because

Answers

Answer:

because each chromosome contains multiple replicons. 

Which type of cell has a life span of four days?
colon
skin
brain
heart

Answers

The type of cell has a life span of four days colon cell. IECs, which line the surface of the intestinal epithelium, are crucial for food digestion, nutrient absorption, the body's defense against infections from microbes, among other functions

What is colon cell?IECs, which line the surface of the intestinal epithelium, are crucial for food digestion, nutrient absorption, the body's defense against infections from microbes, among other functions. Adenocarcinoma, the most prevalent type of colon cancer, develops in the glands that secrete mucus and is the primary cause of colon cancer diagnoses.In order to regulate mucosal immunity, coordinate food recycling, and create a mucus barrier, the colonic epithelium allows host-microorganism interactions. Inflammatory bowel illness is caused by a breach in the epithelial barrier (IBD).A colon polyp is a little cell cluster that develops on the colon's lining. Colon polyps are usually not harmful. But over time, certain colon polyps can transform into colon cancer, which, if detected in its later stages, can be fatal.

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