explain how structure of cell wall in xylem tissue enables it to be strong and flexible?
2 mark question

Answers

Answer 1
The walls of xylem cells are lignified (strengthened with a substance called lignin ). This allows the xylem to withstand pressure changes as water moves through the plant.

The cell membrane is flexible because of the presence of oil like substances called phospholipids, which gives it a fluid nature. While as the cell walls are rigid because of the presence of the thick layers of the substances like cellulose in plants, chitin in fungi and peptidoglycon in bacteria.

Related Questions

Which TWO examples increase salinity (salt content) in the ocean?

freezing icebergs

melting icebergs

heavy rains

high rates of evaporation

where a river dumps into the ocean

Answers

Answer:

The correct answer is high rates of evaporation

Answer:

high rates of evaporation and freezing of iceberg.

Explanation:

high rate of evaporation and freezing of iceberg increase the salinity of the ocean.

Based on the data in the table, what is a possible question for
inquiry?
O Are there other herbicides besides simazine?
O Does Summit Meadow at Yosemite have a population of frogs?
Is frog tissue capable of retaining insecticide degradates as well as
fungicides and herbicides?
Are herbicides less likely to be retained in frog tissue than fungicides
or insecticide degradates?

Answers

Answer:

Does Summit Meadow at Yosemite have a population of frogs?

Would you expect to find older or newer fossils in rock layers closer to the surface? Why?

Answers

Answer:

Newer

Explanation:

Because it is like when you place a plant and its roots underground and cover it up. You have the newer dirt going over the newest roots and the roots are close to the top

(If you aren't satisfied with that explanation here's another one) :

A hundred years ago dinosaurs existed and then they died and their remains were buried under dirt. However, we know that the fossils aren't anywhere near the top. Over time fossils get buried under layers of dirt the newer ones will be near the top because they haven't had time to be more buried.


How many metric tons of carbon are emitted into the atmosphere annually due to human
activities?

Answers

Explanation:

At present, humans are putting an estimated 9.5 billion metric tons of carbon into the atmosphere each year by burning fossil fuels, and another 1.5 billion through deforestation and other land cover changes

What is a biome? Describe 2 biomes on the planet.

Answers

Answer:

A biome is a large naturally occurring community of plants and animals occupying a major habitat :)

Explanation:

1 example of this is the Rainforest :)

2 example of this is the Savannnah :)

Have an amazing day!!

Please rate and mark brainliest!!!

Compare and contrast insects and acarines. How are they similar? How are they different?

Answers

Explanation:

Insects have three body segments — a head, a thorax and an abdomen — while arachnids have just two body parts — a cephalothorax and an abdomen, the National Park Service reports. And while insects have six legs arranged in three pairs, arachnids have eight legs arranged in four pairs.

Answer:

Insects

Three body segments (head, thorax, abdomen)Six legs, three pairsTwo compound eyesTwo antennaeOne or two pair(s) of wingsPossess mandiblesColorless bloodTrachea respirationFeed on both plants and animalsComplete metamorphosis

Arachnids

Two body segments (cephalothorax, abdomen)Eight legs four pairsEight simple eyesSense through cuticlesPincers of fangsWinglessHave cheliceraeBlue bloodTrachea/Book lungs Mainly predatorsIncomplete metamorphosis

Which function is a role of a feedback system?
A stimulation of appetite
B identification of gender
C determination of blood type
D regulation of growth in the skeletal system

Answers

Answer:

it is D regulation of growth in the skeletal system

Explanation:

I hope it right

Which statement about these fossils is supported by the evidence in the diagram?

o The fossil on the bottom layer is unlikely to be related to modern humans.
o The fossil on the bottom layer is the most recent ancestor to modern humans.
o Homo habilis is the most distant ancestor to modern humans.
o Homo erectus is the most recent ancestor to modern humans.

Answers

Answer: the answer would be Homo erectus is the most recent ancestor to modern humans.

Explanation:

I just did this question on a test, hope this helps

Answer:(Q1) Most people develop wisdom teeth by early adulthood. Wisdom teeth can cause pain or crowd out their other teeth, so many people have these teeth removed. Wisdom teeth in modern humans do not perform a crucial life function.

(Answer)They are vestigial structures that once performed an important function for human ancestors.

(Q2) Which statement is true?

(Answer) Imprints of leaves or footprints in sedimentary rock are fossils.

(Q3) Which statement about these fossils is supported by the evidence in the diagram?

(Answer) Homo erectus is the most recent ancestor to modern humans.

(Q4) Which of the following pieces of evidence would best support the argument that humans are more evolutionarily related to fish than they are to insects?

(Answer) The early stages of embryo development in fish and humans look strikingly similar while insects develop very differently compared to both fish and humans.

(Q5) Human embryos have tails, which become tail bones before birth. Tails also appear in fish, reptiles, amphibians, birds, and mammals. Humans also have hair and produce milk to nourish the young, which is unique to mammals. What does this indicate?

(Answer) a close evolutionary connection between humans and many other mammals

Explanation: just took the quiz hope it helps

Why Are People Different Colors? Nina Jablonski, a biological rainbow of human skin color." She knew that our closest primate relatives have pale skin under dark fur, but human skin comes in a variety of shades from pinkish white to dark brown. How did this variation arise Many biological traits have been shaped by natural selection, Could human skin color be one such trait? If so, she would have to find the selective pressure that caused different populations to evolve varying levels of skin pigmentation. at Penn State University, spent many hours chinking about 'the sepia You will now meet Nina in a short five-minute video (https://www.hhmi.org/biointeractive/biology-skin-color). She will take you on a journey that she undertook in the pursuit of this question. After you have viewed the video, answer the following five questions. Questions 1. Describe the conditions necessary for evolution by natural sclection to take place in a population. 2. With regard to the evolution of skin color in humans, which of these conditions is Nina sure about (and why) and which one(s) is she investigating? 3. What is Nina's likely hypothesis about the evolution of skin color in humans? 4. How might she test her hypothesis?

Answers

Melanin is the reason why people are different colors.

The force of blood in the arteries that creates a throbbing at specific locations of the body is knows as
A. Palpitations
B. Blood pressure
C. Heart beat
D. Pulse

Answers

Answer:

C. Heart beat

Explanation:

Electric vehicles are emission free compared to plug-in hybrid electric vehicles.
True
False

Answers

Answer:

true

Explanation:

no explanation on this it's clear enough

Answer: True

Explanation: Hybrids can use gas which causes emissions.

Use the mRNA codon chart to identify Amino Acid 1 in the given picture.

Answers

Answer:

B) tyrosine

hope it helps

(14.01 MC)

What outer covering do humans have, and what does it do?

Skeleton, which protects them from weather conditions
Skin, which provides support for the animal
Skin, which protects them from their environment
Exoskeleton, which protects them from weather conditions

Answers

Answer:

it is c

Explanation:

i had the test

Put the following in order from when they occur in the visual transduction pathway:
Optic Nerve receives signal:
Optic radiation receives signal:
Light hits photoreceptors (rods and cones):
Optic chiasm receives signal:
Ganglion cells receive signal:
Optic tract receives signal:
Bipolar cells receive signal:
Primary visual cortex receives signal:
Lateral geniculate nucleus of thalamus receives signal:

Answers

The visual pathway consists of the retina, optic nerves, optic Chaism, optic tracts, lateral geniculate bodies, optic radiations, and visual cortex.

The pathway is, effectively, part of the central nervous system because the retinae have their embryological origins in extensions of the diencephalon.

What is the pathway of vision steps?

The visual pathway directs to the anatomical structures responsible for the transformation of light energy into electrical action prospects that can be analysed by the brain.

It begins at the retina and terminates at the primary visual cortex.

Thus, this the corre6ct order, It begins at the retina and terminates at the primary visual cortex.

To learn more about vision steps click here:

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After a successful fishing trip, Leo weighed his catch. He determined he caught a total 6.5 kilograms of fish. The recipe Leo wants to use to make fish stew lists their measurements in grams. Help Leo convert the weight of his fish from kilograms to grams.After a successful fishing trip, Leo weighed his catch. He determined he caught a total 6.5 kilograms of fish. The recipe Leo wants to use to make fish stew lists their measurements in grams. Help Leo convert the weight of his fish from kilograms to grams.

Answers

AnsWER; BECUSE IT IS A FULSE  HANWB

Explanation:

I NEED A ANSWEER AHAAHHAHHHA  MAHAHAHAHAH GIVE IT TO ME OR I WILL BE MAD HAHAHA

Answer:

Explanation:

The recipe Leo wants to use to make fish stew lists their measurements in grams. Help Leo convert the weight of his fish from kilograms to grams.After a successful fishing trip, Leo weighed his catch. He determined he caught a total 6.5 kilograms of fish. The recipe Leo wants to use to make fish stew lists their measurements in grams. Help Leo convert the weight of his fish from kilograms to grams.

5. Why do you think the concrete needs to be reinforced with steel bars?​

Answers

Answer:

ABA namalayan ko Yan

Explanation:

dI ko Yan alam

sorry

Answer:

In concrete construction, reinforcing steel rods, bars, etc absorbs tensile, shear, and occasionally compressive stresses. Because plain concrete cannot readily endure the strain and bending stresses induced by wind, earthquakes, vibrations, and other pressures, it is unsuitable for most structural purposes. It is also responsible for holding the concrete together in the right position.

Hope it helped!

Look at the image. Which two bases bond together in DNA?

Answers

Answer:

Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together. The binding of these base pairs forms the structure of DNA .

HELP ME OUT PLS!!!!!!!!!!!!!!!!!!!

11. The earth making an orbit around the sun is called a ______________

and takes _______ days.

12. What season would Texas be having at point D?

______________​

Answers

The earth making an orbit around the sun is known as revolution and takes 365 days.

What season would Texas be having at point D?

The winter season is started in the model D because the texas is not present in front of the sun but behind it and we know that that part of the earth which is infront of the sun has summer season.

So we can conclude that texas has a winter season due to its location as compared to other regions.

Learn more about season here: https://brainly.com/question/6947486

Which of the following functions as part of the excretory and respiratory systems?

Answers

Answer:

The Lungs.

Explanation:

The lungs are part of the respiratory system as well as organs of excretion. They are responsible for the excretion of gaseous wastes from the body.

The organs of your excretory system help to release wastes from the body.  e.g) your lungs are part of the respiratory system. They remove carbon dioxide from your body hence they are also part of the excretory system.

N:B- Excretion cleans up after respiration. Respiration is a chemical reaction that takes glucose (sugar) and oxygen to produce energy. But it also produces water and carbon dioxide as bi-products. Excretion gets rid of carbon dioxide, water, and other, possibly harmful, substances from your body.

It’s multiple choice just need the answers please

Answers

Answer:

3. 3

4. 3

5. 2

6. 3

Explanation:

What process does the image below show?

A. DNA transcription
B. polymerasing
C. mRNA translation
D. helicasing

I think it is transcription because the orange line seems to represent mRNA, but I'm not sure. Somebody help me out?

Answers

Answer:

mRNA translation

Explanation:

because the information stored in mRNA directs the addition of amino acids during protein synthesis.

Which statements are true? Check all that apply.

The table shows conditional relative frequencies by column.
The table shows conditional relative frequencies by row.
The conditional relative frequency that someone is in high school, given that the person prefers to study without music, is about 0.56.
If someone prefers to study with music, the probability the person is in college is about 63%.
If someone prefers to study with music, the probability the person is in HS is about 44%.

Answers

Answer:

3 5 Are correct

Explanation:

I'm dong the same assignment. :)

Answer:

3 and 5!

Explanation:

person above is correct

PLS HELLPPPPPP
Which of the following items are made from nonrenewable resources? Select the two correct answers.(1 point)

A jack-o-lantern
B wool coat
C wooden desk
D plastic umbrella
E copper wire

Answers

I believe it is D. Plastic Umbrella and E. Copper Wire.
Both are made out of nonrenewable materials.

Directions
. Use the chart below to translate the mRNA from slide 55
(copy your mRNA strand 1 and 2 onto this slide) into amino
acids
ce
VUA
Udd
LUGA
OU
und
LUCA
UCO
CCU
CCC
CCA
OU
С
CUA
oud
LAD
CA
CAC
CAM
CAO
AA
+
co
DOG
COA
Cod
AG
ACE
ALA
A
A
->OCOROCCO
ALA
AL
QUA
mRNA 1 Strand
Amino Acids
mRNA 2 Strand
Amino Acids

Answers

Answer:

C

Explanation:

cua is the CEO about liquid and gas and acid liquid acid

Which THREE examples decrease salinity (salt content) in the ocean?

freezing icebergs

melting or thawing icebergs

heavy rains

evaporation

where a river dumps into the ocean

Answers

Answer:

Variables that can cause the ocean water salinity to decrease include the melting of glaciers, the inflow of river water, and rainfall.

Explanation:

which factor that is effecting soil formation represents rock layers

Answers

Answer:

I think it's climate, if I'm not mistaken.

construct a dichotomous key which can be used to identify the five antelopes shown in figure 1.1 use only visible features.​

Answers

The dichotomous key used to identify the antelopes might be based on the presence/absence of certain muscles, weight, etc.

What is a dichotomous key?

A dichotomous key is a system to classify species and/or taxonomic groups by using two different choices.

For example, the presence/absence of certain physical features can be used to identify the antelopes.

Moreover, the threshold in certain features such as weight/height can also be used to classify species.

Learn more about dichotomous keys here:

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Geographic isolation caused a population to separate and experience two different environments. With natural selection occurring over many generations, the two populations are no longer able to successfully mate and reproduce. This is what
happens is_____.

O evolution at the species level
O sympatric speciation
O microevolution leading to speciation
O allopatric speciation

Answers

Formation of new species or speciation as a result of geographic isolation is an example of allopatric speciation.

What is speciation?

Speciation is the process by which new species are formed.

There are several types of speciation;

allopathic speciation sympatric speciation peripratic speciationparapatric speciation

Allopatric speciation occurs when species which are isolated from one another by physical barrier, such as a mountain range or a waterway causes new species to form as a result of inability to interbreed.

Therefore, geographic isolation which leads to speciation is an example of allopatric speciation.

Learn more about speciation at: https://brainly.com/question/2113835

What year was the first animal cloned?

Answers

Answer:the year was 1996 when an animal was first cloned

Explanation:

If methods used in molecular systematics were not developed what would be the effect on the study of systematics?

Answers

Molecular systematics requires phylogenetic analysis as a tool for studying phylogenetic relationships of living organisms.
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Professor Lindsten emphasized that aggressive behavior often involves the interactive influence of personal frustration, exposure to aggressive models, and heightened levels of arousal. The professor's emphasis best illustrates Is this the graph of a function? Select two details that describe both the students in Ms. Odom's class and spelunkers. Drag and drop the details into the box. enjoy exploring the world inside caves Students and Spelunkers are required to learn about the cave's ecology explore caves as a hobby must follow all safety rules Write a descriptive essay about your locality MAX POINTS AND BRAINLESTStep 1: Select ArtYou will start by selecting three pieces of art that you would like to first evaluate and then use aspects from each of the three pieces to create a new, digital piece of artwork all your own!Think about art that you have seen that has appealed to you or spoken to you in some way. The art that you select and use for this lab can be in any form or any type of artpaintings, sculptures, commercial art, abstract art, etc.However, make sure that you will be able to take aspects or qualities from each piece of art that you choose and blend them together to form a new piece of digital art.Find an online image or take a picture of each piece of artwork that you will use and insert these images into a word processing document with a title for each original piece. In which year did Carlos and Andrew have the largest difference in their salaries?2003200420052006 The part of your speech that does most to establish your credibility with the audienceis the So I got a pet goldfish for my birthday. Let me tell you, I'm excited. Nothing quite like watching a little orange thing floating around in a bowl of its own . . . spit and stuff, looking sadly at the green plastic seaweed. It's pretty uplifting. What a great gift! In 25 words or fewer, describe the tone of this first-person narrator. What is another name for white blood cells? Can somebody help me finish my unit test before 9:00 am its 25 questions? Please help! excerpt from The Alchemist by Paul Coelho"When you want something, all the universe conspires to help you achieve it," the old king had said.But the old king hadn't said anything about being robbed, or about endless deserts, or about people who know what their dreams are but don't want to realize them. The old king hadn't told him that the Pyramids were just a pile of stones, or that anyone could build one in his backyard. And he had forgotten to mention that, when you have enough money to buy a flock larger than the one you had before, you should buy it.Answer the question please:How does the symbol of the desert affect the meaning in this passage?A) The desert symbolizes the lies told by the old king who tricked the boy into selling his sheep and setting off on a fools quest.B) When he realizes the old kings promises were empty, the desert symbolizes the empty future the boy will have if he continues this journey.C) The desert represents the unexpected struggles that the boy has faced, showing that it is not easy to realize ones destiny.D) By reflecting the universe and its endless possibilities, the desert symbolizes all the different paths the boy could have taken.(I think the answer is B but I'm not certain) Which of the following statements about Christopher Columbus is true? Please help. Please help..1. How much water could you get if you started with 250.0 grams of hydrogen?2. How much water could you get if you started with 250.0 grams of oxygen?3. How much propane would you need to produce 1000.0 grams of water?4. How much of each reactant is needed to produce 150 grams of hydrogen gas? PLSS HELP I NEED THIS ASAPFind angle relationship and solve for X!!(WILL GIVE BRAINLIEST) Chasing vs pursuing is it true that we should never chase anyone but pursuit them Ras is a GTP-binding protein that is often defective in cancer cells. A common mutation found in cancer cells causes Ras to behave as though it were bound to GTP all the time, which will cause cells to divide inappropriately. From this description, the normal Ras gene is a/an Please help me with this. The stanford prison experiment was terminated early due to pyschological abuse suffered by the prisoners at the hands of the guards. please select the best answer from the choices provided t f In her novel Frankenstein, Mary Shelley shifts from narration by Victor Frankenstein in the first chapters to narration by the creature he created. What effect does this structure have what is p to the power of 2