why is the linner wall of alimantary canal not digisteg although the digestive enzymes can digest all the materials that make cell?

Answers

Answer 1

Answer:

There are no options to this question but it can be answered by giving a general explanation. The answer is:

Because the digestive enzymes are not in direct contact with the cells that make up the walls of the alimentary canal. The walls are protected by mucuous lining.

Explanation:

Digestion of our ingested food is an important process for the effective functioning of our body system. Digestion is the process whereby food, which are usually macromolecules, are broken down into simpler molecules usable by the body. After food is taken in from the mouth (ingestion), it must be broken down by chemical and mechanical means.

The chemicals means is through digestive enzymes, which are proteinous chemical substances. The digestive system consists of the alimentary canal or digestive tract, which is a tube-like organ that forms the path for food passage. Since digestive enzymes secreted during digestion can disintegrate every macro biomolecule e.g protein, carbohydrate etc, it can also break down the molecules that make up the cells of the tract wall.

However, the digestive enzymes does not break down the cells of the canal's wall because the body system secretes mucus, which lubricates the passage of food along the canal. It also prevents the digestive enzymes from coming in contact and acting on the macromolecules that make up the cells of the walls of the alimentary canal.


Related Questions

Help!!

How are all forms of asexual reproduction similar?
A. The offspring have identical DNA to the parent.
B. The offspring have different DNA than the parent.
C. They all require two parents to reproduce.
D. The offspring have diversified DNA in order to survive

Also explain why the answers are correct/incorrect.

Answers

Answer:

Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent. This type of reproduction occurs in prokaryotic microorganisms (bacteria) and in some eukaryotic single-celled and multi-celled organisms

Hope this helped!!!!

Answer:

Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent.

So A.

B. incorrect because they have the same DNA

C. incorrect because They do not need 2. it produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent.

D. incorrect because They do not have diversified DNA

True or False: Within the body, all atoms combine to form molecules. If false, why?

Answers

Answer:

True

Explanation:

Two or more atoms combine to form a molecule, like how the water molecules, proteins, and sugars are found in living things.

Hope this helps! (づ ̄3 ̄)づ╭❤~

The statement i.e. ''Within the body, all atoms combine to form molecules'' is true.

Atoms combine together to form molecules because atom is unstable substance which can't stay in single form due to its reactive nature but become stable when they form molecules due to filling of outermost shell and attain the electronic configuration of noble gases so we can say that atoms formed molecules in order to attain stability and can not remain individually.

https://brainly.com/question/17184872

The __________ is a layer of cells that surrounds an axon and helps to accelerate the transmission of information. a: soma b: nerve c: myelin sheath d: axon terminal

Answers

Answer:

C: myelin

Explanation:

its the substance that surrounds nerve cell axons

You are the lucky student of a wacky professor who develops a time machine. He asks if you will test it with him. You get in and there is an immediate glitch–the date readout fails so that when you land you are not sure what era you are in. As your time machine lands, you see an unusual landscape before you. As you open the door you realize you cannot breathe. You quickly shut the door, realizing you are in the _____.
1) Archaean eon
2) Cambrian period
3) Cenozoic era
4) Mesozoic era

Answers

Answer: Option 1 is the correct answer

Archaean eon

Explanation:

You are in the Archean Eon era because the it was early in the Archean that life first appeared on Earth. The most two earlier of the formal divisions of Precambrian time (about 4.6 billion to 541 million years ago) and the period when life first formed on Earth It began about 4 billion years ago with the formation of Earth’s crust and enlongated to the begining of the Proterozoic Eon 2.5 billion years ago; the latter is the second formal division of Precambrian time.

In the Archean eon there are unsual landscapes no rocks are preserved from this stage. The earliest terrestrial materials are not rocks but minerals.

Throughout the Archean, oceanic and island arc crust was produced semi-half way.

You cannot breathe because there was no oxygen on the Earth. Oxygen was only present in compounds such as water and chemical reactions change to carbon containing molecules that form simple living cells that does not require oxygen.

In which form do plants store energy?
starch
glycogen
chitin
cellulose

Answers

Answer:

starch

Explanation:

plant store energy in the form of starch and animal store energy in the form of  glycogen these starch and glycogen are converted into glucose whenever body needs energy

Answer:

The answer is Starch

Explanation:

Hopefully this helps you

pls mark brainlest

It is right on Edge2020

about plant kingdom​

Answers

What’s the question?

explain the gaseous exchange in lungs

Answers

Answer:

Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

Hope it helped u if yes mark me BRAINLIEST!

Tysm!

Answer:

breathing allows the exchange between 2 gases: oxygen and carbon dioxide. Gas exchange occurs in millions of lung alveoli and the capillaries that surround them

Explanation:

The diagram shows a straight chain of glucose molecules.
Which carbohydrate is shown above?
O fructose
O sucrose
O galactose
Ostarch

Answers

Answer:

Starch

Explanation:

Starch is a polysaccharide composed of many glucose molecules linearly arranged.

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Fructose, sucrose, galactose, and glucose are carbohydrates. They are organic compounds with H, C, and O. Their functional groups are hydroxyl (-OH) and carbonyl (-C=O).

Galactose, fructose, and glucose are isomeric monosaccharides, with the formula C₆H₁₂O₆.

Sucrose is a disaccharide composed of glucose + fructose. The formula is C₁₂H₂₂O₁₁.

Glucose is the most abundant carbohydrate. The main source of glucose is vegetable starch.

The starch molecule is composed of many glucose molecules joined.  

This is a linear polysaccharide that can acquire a tridimensional helicoidal conformation. Each of the helices turns consists of six glucose molecules. In the interior of the helix, there are only hydrogen atoms. Hydroxyl groups are facing the exterior.

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Related link: https://brainly.com/question/13071275?referrer=searchResults

The arrangement of leaves on a tree branch that reduces overlapping and overshadowingof leaves from sunlight is referred to as leaf …………………………………………………………This ensures exposure of most of the leaves to sunlight for maximum ……………………………………………..to take place in the ………………………………………………………………………of leaf cells. The grana contains numerous……………………………………………molecules which trap light………………………………….for ………………………………………………….of water, producing ………………………………………atoms required for the process of carbon (IV) oxide…………………………………………………………in the light……………………………………………………………stage of photosynthesis which takes place in the……………………………………………..of the chloroplast.

Answers

Answer:

phyllotaxy

photosynthesis

chloroplasts

chlorophyll

energy

oxidation

oxygen

reduction

independent

stroma

Explanation:

The arrangement of leaves that provide maximum exposure to sunlight is referred to as leaf phyllotaxy that reduces overlapping and overshadowing of leaves and supports maximum photosynsthesis.

The contains numerous chlorophyll molecules that trap the light energy for the oxidation of water and producing oxygen (O2) atoms required for carbon (IV) oxide reduction in light-independent, which takes place in the stroma of the chloroplast.

Hence, the correct answer in a sequential manner is as follows:

phyllotaxy

photosynthesis

chloroplasts

chlorophyll

energy

oxidation

oxygen

reduction

independent

stroma

In brief state what happens when a) dry apricots are left transferred to sugar solution? b) a Red Blood Cell is kept in concentrated saline solution? c) the Plasma-membrane of a cell breaks down? d) rheo leaves are boiled in water first and then a drop of sugar syrup is put on it? e) golgi apparatus is removed from the cell?

Answers

Answer:

Explanation:

 (a) Dry apricots when placed in pure water swell due to osmosis and when in sugar water, they shrink again.

(b) When a Red Blood Cell is placed in concentrated saline solution exosmosis occurs and the RBCs shrink due to excess loss of water.

(c) Breaking of the plasma membrane leads to the scattering of the ceil organelles as it forms the basic supporting unit of the cell.

(d) When Rheo leaves are boiled in water first and then a drop of sugar syrup is put on it, osmosis does not occurs, due to the death of the cells of the leaf. This shows that selective permeability is property of living plasma membrane.

(e) Golgi complex helps in the package, storage and transfer of proteins synthesized by ribosomes. Thus, when ribosomes are removed the cell will not function properly

At label ________, the cell is not hyperpolarized; however, repolarization is in progress, as the sodium channels are inactivated or becoming inactivated, and many potassium channels have opened.

Answers

Answer: C

Explanation:

When a neuron receives a stimulus, the sodium channels present in the membrane are opened, and therefore Na+ enters the cell in favour of the concentration gradient, so that the membrane potential changes to positive by means of ion exchange, producing depolarization. If this depolarization reaches a certain threshold value, an action potential is generated. The next step is the opening of the potassium channels and the inactivation of the sodium channels, so that the repolarization of the membrane takes place. The sodium channels, will return to the closed state in the hyperpolarization to continue in this state during all the rest potential achieving the action potential to return to -70 mV (repolarization).; until the arrival of a new action potential which produces the activation and opening of the sodium channels, repeating the cycle again and generating a new depolarizing action. This process is part of the synaptic transmission.

So, hyperpolarization is any change in the cell's membrane potential, which makes it more polarized. This means, hyperpolarization is an increase in the absolute value of the cell's membrane potential. Thus, changes in membrane voltage where the membrane potential is more distinctly positive or negative are hyperpolarizations.

During the repolarization period after an action potential, the membrane potential is more negative than when the cell is in "rest period". In the picture, this repolarization period is about 1-2 milliseconds. So, repolarization is the time in which the membrane potential is hyperpolarized with respect to the resting potential.

In the attached figure, part C indicates this repolarization period.

Which type of energy do you think is better: SOLAR ENERGY or WIND ENERGY?why do you think that ?

Answers

Answer: solar energy is better.

Explanation:

What are two ways the excretory system helps the body maintain homeostasis?

Answers

Answer:

1.Osmoregulation

2.Thermoregulation

Explanation:

1.Osmoregulation is the maintenance of constant amount of water in the body of an organism.The kidney is responsible for this phenomenon as in it has a nephron in which at a particular part of the nephron,i.e the conducting tube which sites a hormone called the anti diuretic hormone which makes the walls of the conducting tube permeable to allow the movement of water from the urea back into the body before it is transferred into the bladder for to be released into the external environment.

2.Thermoregulation involves the maintenance of heat in the body of an organism.The skin is responsible for this process.It has hairs which lie on the surface of the skin to loose heat to the external environment during the hot days and also stands on the surface of the skin which trap a film of air on the skin surface to prevent heat loss in the cold days.

I HOPE IT'S OK?

Answer:

The kidneys control the amount of water, ions, and other substances in the blood by excreting more or less of them in urine. The kidneys also secrete hormones that help maintain homeostasis.

Explanation:

why the circulatory system is considered to be a closed system?

Answers

Explanation:

human have closed circulatory system. this means blood is always enclosed in the vessels  and the heart while circulating throughout the body IN this type of system blood is pumped by heart through arteries and veins and does not fill the body cavities thats why the circulatory system is considered to be a closed system

Why did the author think e-skin could make better hearing aids? In your answer, explain how the ears connect to the nervous system

Answers

Answer:

The author thought this because e-skin might hold promise for use in soft, wearable hearing aids. Unlike conventional aids, soft devices are more comfortable because they mold to human skin. When the ear receives sound vibrations, there are hair cells in the cochlea that vibrate and translate the sounds into electrical signals. These electrical signals are transmitted to the auditory nerve, which transmits the information to the brain.

Answer:

Sound is one of the five major senses. The nervous system carries sound signals from sensory receptors to the brain. E-skin has many sensory receptors that can carry signals toward the brain, enabling us to react to sounds. Because e-skin is soft, scientists can use it to make effective hearing aids that are quite comfortable to wear.

Explanation:

do not copy it, this is the exact answer from Edmentum

(this means it right)

"A type of laser medium that produces a visible blue-green wavelength beam that is absorbed by red-brown pigmented tissue, such as the red hemoglobin in blood, and by the cells that lie under the retina, is a(n)"

Answers

Answer: ARGON LASER

Explanation: An Argon laser is a type of unique laser system that was invented in 1964,it is unique because it uses a noble gas (ARGON) as it's active medium. Argon laser functions by emitting a colored light of blue/green,this light is being absorbed by haemoglobin present in blood cells,the heat produced gives room/allows the laser to close up cells of blood that are ruptured.

Which of these statements can be predicted with the help of science

Answers

Answer:

Something that can be tested, or rationalized.

Explanation:

You didn't give any statements to choose from, so I'll give you a rule of thumb. When finding a scientific statement, make sure it's something like "The tide is higher at noon than it was at 3 am." and not "Your dog is itchy, so that means a bad storm will arrive."

Which of these is NOT an example of biting and chewing insect?

(A)

Locust



(B) Grasshopper

(C)

Aphid

(D) Termite

(E)

Answers

Answer:

C aphid is the answer for that question

Answer:

yes

Explanation:

what is biology definition in details

Answers

Answer:

Biology :

[tex]<font color=green>[/tex]

the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.

[tex]<font color=pink>[/tex]

#Be Brainly

Answer:

The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.

Hope this helps! :D

In 1998, scientists discovered that the expansion of the universe has been accelerating.
What force is causing this phenomena?
dark energy
Hubble's law
the Doppler effect
background radiation

Answers

Answer:

Option A (dark energy) is the right answer.

Explanation:

A hypothetical supplier of power that creates a force that contradicts gravity, which is assumed to have been the catalyst of accelerated universe development. Hypothetically, dark energy counteracts the kinetic energy including its beginning of the globe, meaning that perhaps the multiverse does not have intrinsic curvature, although observational measurements presently indicate.

Some other three choices have no relation to the particular situation. Thus option A would be the right solution.

Answer:

A

Explanation:

WILL GIVE BRAINLIEST AND POINTS!!!!!!! How long can we survive on each planet of the solar system without a spacesuit?

Answers

Answer:

about 80 days

Explanation:

the time period of survival is roughly a second, even though the gravity force is equal to that of Earth (the more you know!) Without holding our breaths, or donning any kind of spacesuit, we can survive for about 80 years

Which two organisms are most closely related, based on the tree above?

Answers

Answer:

dinosaurs and birds

Explanation:

Which form of hypoxia reflects poor O2 delivery resulting from too few RBCs or from RBCs that contain abnormal or too little hemoglobin?
a. hypoxemic hypoxia
b. ischemic (stagnant) hypoxia
c. anemic hypoxiad. histotoxic hypoxia

Answers

Answer:

c. Anemic hypoxia

Explanation:

Hypoxia is a health condition in which the body or a region of the body is not adequately supply with oxygen  at the tissue level. Types of hypoxia include:

Hypoxemic hypoxia is a condition in which their is low level of oxygen in blood in the arteries due to the inability of the lungs to properly oxygenate blood.

Ischemic (stagnant) hypoxia is a type of hypoxia that occurs due to a decrease in blood flow preventing adequate blood supply to tissues.

Anemic hypoxia occurs when the ability of the blood to carry oxyegen is reduced due fewer red blood cells or red blood cells that contain little or abnormal hemoglobin molecules hemoglobin molecules.

Histotoxic hypoxia is hypoxia in which the cells are unable to use oxygen from the bloodstream, even though there is normal delivery of oxygen to such cells and tissues. This is due to the poisoning of the cells or tissues causing a disruption in their respiratory mechanism, for example in Cyanide poisoning.

Therefore, the correct answer is anemic hypoxia.

punnet squares are a useful tool in genetic studies. Which of the following describes the most likely use of this tool?
a. To quantify proportions of offspring with polygenetic traits
b. To determine the genotypic ratios of crosses
c. To determine frequencies of recombination
d. to measure phenotypic variability

Answers

Answer:

B

Explanation:

To determine the genotypic ratios of crosses

4. What happens when an enzyme is denatured? I​

Answers

Answer:

in the air

Explanation:

poop

Which of the following is an example of a consumer? Tree Sun Rabbit Mushroom

Answers

Rabbit is a consumer, it feeds off of the produce of those other items.
Rabbit:
A consumer feeds on plants or other animals for energy. So in your examples, the rabbit is the consumer.

A student finds that the mass of 25mL of an unknown liquid is 20.5g. What is the density of this substance?

Answers

Answer:

Density, [tex]d=0.82\ g/cm^3[/tex]

Explanation:

It is given that,

Mass of unknown liquid is 20.5 kg

Volume, V = 25 mL

We know that, 1 mL = 1 cm³

25 mL = 25 cm³

The density of the substance is equal to its mass per unit volume. So,

[tex]d=\dfrac{m}{V}\\\\d=\dfrac{20.5\ g}{25\ cm^3}\\\\d=0.82\ g/cm^3[/tex]

So, the density of this substance is [tex]0.82\ g/cm^3[/tex].

Answer:

0.82

Explanation:

just took test

Which would have a bigger effect on an organism, an error during transcription or a point mutation?

Answers

Answer: Point mutation would have a bigger effect on an organism.

Explanation:

Which of the following is a testable hypothesis?
a. Roses are more beautiful than violets.
b. A plant needs at least five hours of sunlight per day to grow.
c. I've cream is delicious.
d. Humans will someday land on Mars.

Answers

Answer:

D. Humans will someday be on mars

nope, the only one you can test would be B, because the others are opinions or something in the future

You are studying flower color and find that purple flowers are dominant to white flowers. When a certain purple flowered plant was self pollinated, its progeny consisted of 76 purple and 25 white flowered plants. What was the genotype of the original purple flowered parent?

Answers

Answer:

dsi

Explanation:

sdf

Other Questions
Identfy the incorrect statement about active transport. a)It doesn't require the use of a cell's energy b)None of the choices. c)It moves substances across the cell membrane against their concentration gradients d)Sometimes active transport involves the use of carrier proteins to transport substances in much the same way as passive transport. 'I was trying to finish my homework and I finished it after two hours and I slept for one hour'. This sentence is wrong because : 1- All of the above choices. 2- The writer should have used exlamation mark . 3- The writer did not use commas to seperate the clauses 4- The writer should have used full stops to seperate these sentences from one another. What is one term or multiple terms connected by an addition or subtraction sign I will rate brainly if you answer this The number of weekly social media posts varies directly with the square root of the posters age and inversely with the cube root of the posters income. If a 16-year-old person who earns $8,000 makes 64 posts in a week, what is the value of k? One of the least desirable and routine tasks members of your team must do is taking minutes (notes) at team meetings. Proof that this task is disagreeable can be seen in the repeated arguments among team members before every meeting about who should take the minutes. Which of the following would be the most effective way for the team to address this stuation? A. Ask your manager to decide in order to minimize any personal bias among team members. B. Randomly assign a person to b the official note taker at the beginig of each meeting C. Create a rotating assignment so each team member shares note taking. D. Assign note taking to whichever person enters last at each 100 POINTS AND BRAINIEST! List two ways that Mark Twain achieves coherence in the story and provide examples for each. A. B. 14. Simplify the expressionsa. 12 - 5y + 21 + y -23 Qu significa lector competente? Can someone help me? Compute using long division: 1,23468 Need help with this problem ASAP, dont need an explanation, just an answer The management of Nebraska Corporation is considering the purchase of a new machine costing $490,000. The company's desired rate of return is 10%. The present value factors for $1 at compound interest of 10% for 1 through 5 years are 0.909, 0.826, 0.751, 0.683, and 0.621, respectively. In addition to the foregoing information, use the following data in determining the acceptability: Year Income from Operations Net Cash Flow 1 $100,000 $180,000 2 40,000 120,000 3 40,000 100,000 4 10,000 90,000 5 10,000 120,000 The average rate of return for this investment is a.58% b.16% c.10% d.18% Having trouble.. help? A basin is filled by two pipes in 12 minutes and 16 minutes respectively. Due to the obstruction of water flow after the two pipes have been running together for some time, the 1st pipe carries 7/8 of the carrying capacity and the 2nd pipe carries 5/6 of the carrying capacity. After removing the water barrier, the tank is full in 3 minutes. How long after the flow of water in the two pipes became normal? what is (8*8*8) * (8*8*8*8) in exponential form? One reason for the failure of SA A manufacturing company has variable overhead costs of $2.50 per unit and fixed costs of $5,000 per month. Each unit requires 4 hours of direct labor and the company expects to produce 2,000 units each month. The standard overhead rate will be The managerial purpose of setting objectives include: Select one: a. Converting the strategic vision into specific performance targets b. Establishing deadlines for achieving performance results c. Challenging the organization to perform at full potential and deliver the best results d. All of these What is the range of the function shown in the graph below? answer type: interval, all real values except one, all real values except two, all real numbers Interval: The volume of a cube is given by , where s is the side length of the cube. What is the difference of the volumes of two cubes with side lengths of 5 meters and 4 meters?