Because plants do not have skeletons, what accounts for their rigidity?

Answers

Answer 1
The cell walls of plants are very rigid. In addition, the turgor pressure of the water pressing against those cell walls keeps them firm. As water flows through the membranes of the cell walls, the difference in pressure allows these cells to stay in shape.

Related Questions

The ________ spreads more parasitic diseases to humans than any other vector.

Answers

The MOSQUITO spreads more parasitic diseases to humans than any other vector.

What is a cost of using technology to transport water?

Answers

it is very expensive for one this, and also it does not always work. 

Answer:

Freshwater supplies can be depleted in an area.

Explanation:

In the system shown below, there are 80 x particles, all in region A (the left half of the box). No extra particles can enter the system. When the system is in equilibrium, what will be true of the particles?



A. Since there are no y particles, the system is already in equilibrium with all 80 x particles in a.

B. Due to the constant motion of particles, this system will never reach equilibrium.

C. In equilibrium, there will be exactly 40 x particles in A and 40 x particles in B, and those numbers will remain constant.

D. In equilibrium, there will be approximately 40 x particles in A and 40 x particles in B, and those numbers will fluctuate but will remain near 40.

Answers

Answer is  C. In equilibrium, there will be exactly 40 x particles in A and 40 x particles in B, and those numbers will remain constant.
Hope this helps!
Have a great day mate!!

Answer:

D. In equilibrium, there will be approximately 40 x particles in A and 40 x particles in B, and those numbers will fluctuate but will remain near 40.

Explanation:

The perfect euilibrium is hard to achieve given the fact that particles move and are in constant change, but the equilibrium is reached when both boxes have a close number of particles in each of them, for example 41 and 39, 40 and 40, 42 and 38, this change in the number of particles is due to the movement of the particles, but it is still reachable.

In the image below, in which location is limestone formed?

Diagram showing the carbon cycle. At Location A, a river meets an ocean. At Location B, sediments sink to the bottom of the deep ocean. At Location C, green plants perform photosynthesis. At Location D, a factory burns fossil fuels.

Public Domain

A
B
C
D

Answers

The answer would be B because the sediments sink and start to compact together to form the limestone

The location where the limestone is formed in the image below is the location B. Thus, the correct option will be B.

What is limestone?

Limestone can be defined as a type of carbonate sedimentary rock which is one of the main sources of material lime. Limestone is composed mostly of the minerals calcite and aragonite, which are the two different crystal forms of CaCO₃. Limestone forms when these two minerals precipitate out of the water which is containing the dissolved calcium.

In the image provided in the question, the location where limestone is formed is the location B, sediments part of the cycle.

Therefore, the correct option will be B.

Learn more about Limestone here:

https://brainly.com/question/11726100

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What effect does planting trees and bushes on a steep hill have?

Answers

Planting trees and bushes is always good for nature and humans as these clean the air and make the air breathable. On a steep hill planting of trees and bushes are important as these extend their roots deep inside the hills for better growth. The trees and plants also hold the soil and water during rain and can avoid floods.

How does atp supply energy to power metabolism?

Answers

Final answer:

ATP supplies energy to power metabolism by serving as the primary energy currency in cells. It is generated through the metabolism of glucose and releases energy when it is hydrolyzed. This energy is used to fuel various cellular functions.

Explanation:

ATP supplies energy to power metabolism through its role as the primary energy currency in cells. When ATP is hydrolyzed, it releases a phosphate group and forms ADP, releasing energy that can be used for cellular processes. This energy is used to fuel functions such as muscle contraction, nerve cell activity, and absorption of nutrients in the gastrointestinal tract.

Most of the ATP in living organisms is generated through the metabolism of glucose. During glucose catabolism, glucose is broken down through a series of enzymatic steps in glycolysis, producing ATP as a byproduct. The energy obtained from glucose metabolism is used to regenerate ATP and power the multitude of energy-requiring pathways in cells.

Open dumping in landfills was outlawed in many states because of _____.

Answers

the answer choices were supposed to be

groundwater pollution

 

methane explosions

 

their unsightliness

 

foul odors

Answer:

Open dumping in landfills was outlawed in many states because of land and water environments.

Explanation:

An open dumping is defined as a land disposal site at which solid wastes are disposed of in a manner that does not protect the environment, are susceptible to open burning, and are exposed to the elements, vectors, and scavengers.

A woman and her male partner have normal color vision. however, her father and her first son are colorblind. what is her genotype

Answers

X C X c

(C is being used as the gene for colorblindness)


The hydrophobic tail of phospholipids moves to the _____ of the cell membrane.

A.
inside

B.
outside

Answers

I believe the answer is a) inside
The answer would be 
A) Inside.

The science that applies the mechanical principles of physics and engineering to the investigation of human movement and the structure and function of the human body is called

Answers

biomechanics

Is the study of human movement

Activation of the sympathetic nervous system question 13 options:
a.increases respiration and decreases salivation.
b.increases respiration and increases salivation.
c.decreases respiration and increases salivation.
d.decreases respiration and decreases salivation. save

Answers

The correct option is A.
The sympathetic nervous system is the part of autonomic nervous system which activate the fight or flight response system. The sympathetic nervous system can accelerate the heart rate, widen the bronchial passage, decrease motility of the intestines and constricts the blood vessels.

Answer:

The answer is A .increases respiration and decreases salivation.

Explanation:

If an amino acid has a side chain (r group) that is charged (i.e. bears a full + or – charge), which amino acid group would it belong in?

Answers

The answer is charged amino acid group.

Grouping of amino acid into one of three categories are only based on its R group. And there is an amino and carboxyl group are present in the amino acid that are ionized so we can say that amino acid is technically charged and there is one thing to remember that Amino acids that are classified as polar, they are not having any charge.

Describe the importance of high heat of vaporization to ecosystems. I appreciate your help. ;)

Answers

Water has high heat of vaporization. This property of water is beneficial to the ecosystem because it helps to moderate the temperature of the ecosystem.
 The quantity of heat that is required to convert a unit of water into its vapor form is very high, this is due to the hydrogen bond found inside water. This property of water helps to reduce drastic changes in temperature.

What are the four conditions needed to see an object?

Answers

distance, direction, reference point and I don't know the fourth one

Answer:

The four conditions to see an object are, source of light, object,eye and brain.

Explanation:

Four conditions necessary to see an object;

1. You need a light to be able to see an object. We need source of light which emit light and is reflected by the object.

2. An object must be able to reflect the light for it to be seen.

3. The eyes. It serve as a screen where the image is formed. The retina focus and receives the light Ray reflected by the object.

4. The brain processes it and interpret what was reflected so that we can identify and we can see.

If a cell was observed under the microscope and found to have a rigid cell wall and be green in color that cell is most likely a

Animal cell
Plant cell
Bacterium cell
Algae cell

Answers

The only answer choice that has a rigid cell wall is a plant cell. They are also green because of chlorophyll. so, the answer is plant cell. Make sense?
Plant cells, they are the only cells with cell walls.

Hope this helps :)

Dr. nguyen's experimental rats have learned the location of a food treat in a maze. she removed their hippocampi 3 hours after the rats located the food. what will be the effect on the rat's memory for the food's location?

Answers

The hippocampus is a part of the brain responsible for consolidation of short-term memory, long-term memory, and spatial memory( that enables navigation )
By having the hippocampus removed, the rat won't remember his memories, such as the location of a food treat in the maze.

Which energy production method does not ultimately depend on the sun?

Answers

Nuclear fission. This is because the source comes from a mineral. All other forms of energy rely on the sun. Wind is produced by the turbulence of the air from the uneven temperatures in the air caused by the sun. Coal is derived from organic matter which at one point must have come from organisms that have lived that have relied on the sun as a form of energy because at the lowest trophic level there must be photosynthetic organism. Solar energy requires the sun to be out on the photoelectric cell in order to function.

If you look at a plant cell under the microscope what would you notice that is different from an animal cell

Answers

In a plant cell, you will see that plants have one large vacuole (takes up 90% of the cell's volume) while animal cells have many small vacuoles. The plant cell has a cell wall and chloroplasts which animal cells do not. The animal cell contains centrioles while plant cells do not. 

is Zinc is a silver-gray metal qualitative, quantitative, or neither

Answers

the answer is qualitative

A person undergoes hypnosis, and her hand is put in ice. she does not show signs of being in pain. which of these statements is consistent with the dissociation theory?

Answers

The dissociation theory states that while in hypnosis, the mind is completely separated from the rest of consciousness. So, if a person underwent hypnosis, and her hand was put in ice, her mind would theoretically not be able to register the pain that would be experienced by her body. So, the statement that she didn't feel pain from the ice is consistent with the dissociation theory.
Final answer:

Under the dissociation theory of hypnosis, a person may not show pain during hypnosis because of a dissociated state of consciousness where the conscious mind does not fully process pain signals, consistent with research by Ernest Hilgard.

Explanation:

The statement consistent with the . In this state, the person's attention is diverted, such that the pain signals are not fully processed by the conscious mind. This concept aligns with Ernest Hilgard's experiments on hypnosis and pain, wherein participants showed a split in consciousness, allowing them to not report feeling pain even though their physiological responses indicated otherwise.

What "drives" plate tectonics?

A) lava

B) conduction

C) continental drift

D) heat and convection

Answers

D Heat and Convection

Rag the pink labels to the pink targets, indicating the relative concentration of glucose inside and outside the cell. drag the correct white label to the white target, indicating the direction that na+ ions and glucose move through the cotransporter. drag the blue labels to complete the sentences on the right, indicating how na+ ions and glucose move through the cotransporter relative to their electrochemical and concentration gradients.

Answers

Attached is the exercise. I found the full scheme on the internet.

For the position "a" the correct label is the pink label with glucose concentration low. This type of cotransportation transports two solutes in the same direction, being one in favour of its gradient, and another one against its gradient. In this case the one that's in favour of its gradient is the Na+, so the glucose is in low concentration outside the cell.
For the position "b" the correct label is the one with the glucose and Na+ entering the cell. This is cotransport, done by the glucose-sodium cotransporter.
For the position "c" the correct label is the pink label with glucose concentration high. This type of cotransportation transports two solutes in the same direction, being one in favour of its gradient, and another one against its gradient. In this case the one that's in favour of its gradient is the Na+, so the glucose is in high concentration inside the cell.
For sentence "1." the correct term is "down". Because the Na+ concentration is higher on the outside of the cell, the Na+ moves down its electrochemical gradient.
For sentence "2." the correct term is "against" for the reasons explained above.

Answer:

look at the person above me thanks

Explanation:

A zygote will develop into an___during the early stages.

Answers

A zygote will develop into a blastocyst during the early stages. It will eventually develop into an embryo.
It will develop into a hollow ball of cells called the blastocyst. 

Hope this helped!!!

Describe the pathway of scientific inquiry by which henri becquerel discovered that uranium gives off a type of radiation

Answers

Henri was an engineer who used a phosphorescent material, uranium salts to produce radioacitivity by exposing it to sunlight so this discovery helped him and Madam Curie to receive the Nobel Peace Prize in 1903 and this discovery had important ramifications for the use of radioactivity.

Final answer:

Henri Becquerel's discovery of uranium radiation began with the observation that a uranium compound darkened a photographic plate through black cloth, leading to experiments that established the phenomenon as nuclear radioactivity. This discovery laid the foundation for nuclear physics, contributing to our understanding of atomic structure.

Explanation:

The pathway of scientific inquiry by which Henri Becquerel discovered that uranium gives off a type of radiation began in 1896, as a result of his curiosity and thorough experimentation. Becquerel found that a uranium compound placed near a photographic plate could darken the plate, even when wrapped in black cloth, indicating the emission of unseen penetrating rays. This accidental discovery led him to further investigate, finding that the effect was specific to uranium compounds, and not affected by external conditions such as light blockage, temperature, or pressure. These penetrating rays were later understood to originate from the nucleus of the atom, marking the discovery of nuclear radioactivity, an area that would be further explored by Marie Curie and her research on radium and polonium.

Through experimenting with different conditions and materials, Becquerel was able to conclude that the radiation emitted by uranium was a new type, which he termed radiations. This discovery marked a fundamental shift in understanding atomic structure and laid the groundwork for the field of nuclear physics. The radiation emitted by uranium and later studied by the Curies, did not vary with chemical state or physical conditions, indicating a source within the nucleus of the atom, distinct from known electromagnetic and chemical interactions of the time.

If the earth did not have an atmosphere, the sky would appear _____ during the day.

Answers

If the Earth did not have an atmosphere, the atmosphere would not look like anything during the day. You would have a night sky with a day's ground. You could see all the stars. It'd be like standing on the moon.

In _____, the Supreme Court ruled that the government may restrict civil liberties when not doing so results in "clear and present danger."

Answers

Schenck v. United States

Answer:

Schenck v. the United States.

Explanation:

The clear and present danger was a doctrine adopted by the United States Supreme Court to check in what cases the First Amendment right granted of freedom of speech could be restrained.

The Schenk v. United States case was a landmark decision in 1919. On it, the Court stated that the freedom of speech right could be restrained if the word spoken on the speech represents a "clear and present danger" to society.

Schenk was the general secretary of the U.S. Socialist Party and he rejected the military draft in the country. He printed a lot of leaflets that called men to resist the military draft and avoid going to war.

I hope this answer helps you.

Plaque consists of a biofilm, with bacteria carefully arranged in a community. what are the advantages of forming a biofilm?

Answers

They act as a barrier against toxins and other harmful things in the environment. They also are a source of nutrients that are stored. The microenvironment is also favorable due to its high level of hydration and low oxygen levels.


Which describes a characteristic of branched polymers? A.They have only one start point and many end points. B.They have many start points as well as many end points. C.They have many start points and only one end point. the more detail the better thank you

Answers

B.They have many start points as well as many end points. 

Answer:

B.They have many start points as well as many end points.

Explanation:

In a branched polymer side chains grow out of a main chain. The side chains are also made of same units as the main chain. These branches are a result of side reactions that occur during polymerisation.

The branches may serve as the starting or the end point of the chain. They may also be branched further. So the starting and the ending point of a branched polymer completely depends on the reference point. Branched polymers have reduced density because of lower packing efficiency.

Some organisms undergo asexual reproduction through mitosis, while others reproduce sexually, and their cells undergo meiosis to produce gametes. If there were drastic changes in temperature in an ecosystem, which process do you predict would be most beneficial to a species? Mitosis: it causes genetic mutations, which may be favorable to the species. Meiosis: it increases genetic variation, which helps ensure the species will survive. Meiosis: it produces more daughter cells, which increases the population of the species. Mitosis: it produces identical offspring, which increases genetic variation.

Answers

it increases genetic variation which helps ensure the species will survive

Answer:

Meiosis: it increases genetic variation, which helps ensure the species will survive.

Explanation:

Crossing over and genetic recombination happen during meiosis and both processes ensure that the daughter cells are genetically variant from the parent cells.

Crossing over and genetic recombination increase the genetic variability of a population and consequently increases their chances of survival in case of changes to the environment.

What is the correct description of alcoholic fermentation?
A. an anaerobic process that has CO2 as a byproduct
B. an anaerobic process that occurs in muscles
C. an aerobic process that produces ATP from pyruvic acid
D. an aerobic process that occurs in cytoplasm

Answers

C. an aerobic process that produces ATP from pyruvic
Alcoholic fermentation converts sugars such as glucose, into cellular energy, producing ethanol and carbon dioxide (co2) as a side affect. 
Therefore your answer would be A
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Heartbroken maidens were nothing to him. Even the sad case of the fairest of the nymphs*, Echo, did not move him. She as a favorite of Artemis, the goddess of woods and wild creatures, but she came under the displeasure of a still mightier goddess, Hera herself, who was at her usual occupation of trying to discover what Zeus was about. She suspected that he was in love with one of the nymphs and she went to look them over to try to discover which. However, she was immediately diverted from her investigation by Echos gay chatter. As she listened amused, the others silently stole way and Hera could come to no conclusion as to where Zeuss wandering fancy had alighted. With her usual in injustice she turned against Echo. That Nymph became yet another unhappy girl that Hera Punished. The goddess condemned her never to use her tounge again except to repeat what was said to her. You will always have the last word, Hera Said, but no power to speak first.2.This was very hard, but hardest of all when Echo, too, with all the other lovelorn maidens, loved Narcissus. She could follow him, but she could not speak to him. How then could she make a youth who never looked at a girl pay attention to her? One day, however, it seemed her chance had come. He was calling his companions, Is anyone here? and she called back in rapture, Here-Here. She was still hidden by the trees so that he did not see her, and he shouted, Come!just what she longed to say to him. She answered joyfully, Come and stepped forth from the woods with her arms outstretched. But he turned away in angry disgust. Not so, he said: I will die before I give you power over me. All she could say was, humbly entreatingly, I give you power over me, but he was gone. She hid her blushes and shame in a lonely cave, and never could be comforted. Still she lived in places like that, and they say that she has so wasted away with longing that only her voice now is left to her.3.So Narcissus went on his cruel way, a scorner of love. But at last one of those he wounded prayed a prayer and it was answered by the gods: may he who loves not others love himself. The great goddess Nemesis, which means righteous anger, undertook to bring this about. As Narcissus bent over a clear pool for a drink and saw there him own reflection, on the moment he fell in love with it. Now I know, he cried, what others have suffered from me, for I burn with love for my own selfand yet how can I reach that loveliness I see mirrored in the water? But I cannot leave it. Only death can set me free. And so it happened. He pined away, leaning perpetually over the pool, fixed in one long gaze. Echo was near him, but she could do nothing; only when, dying, he called to his own image, Farewellfarewell, she could repeat the words as a last goodby to him. 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