Because the water is so deep. There are no rooted plants to be found at the bottom of lakes because sunlight cannot penetrate that far.
Lakes obtain their water supply from three different sources: precipitation; rivers and streams; and underground water.
The size of lakes can range from very small to very large. They can be quite deep, or they can be only moderately so. Ponds are frequently used as a synonym for lakes that have depths of less than six or seven feet and support plant life on the bottom.
The changing of the seasons can bring about significant fluctuations in temperature for the lakes that are found in certain temperate regions.
Want to know more about lakes visit the link which is given below;
https://brainly.com/question/24386402
#SPJ4
What adaptations allow the same bacteria that live on Earth to live on the International Space Station (ISS)
In order to survive on the ISS, bacteria must be able to withstand the immense gravitational forces, exposure to radiation, lack of oxygen, and other environmental factors that are not present on Earth.
Fortunately, bacteria have evolved a variety of adaptations that allow them to survive and thrive in space.One of the most important adaptations for bacteria living on the ISS is the ability to survive in low-oxygen environments. The ISS has very low levels of oxygen, which are not conducive to most life forms. However, many bacteria have adapted to survive and reproduce in these conditions.
Bacteria have developed specialized metabolic pathways that enable them to use different sources of energy, such as carbon dioxide, sulphur, and nitrogen compounds, that are more abundant in the environment of the ISS than oxygen. This allows them to survive and reproduce in the low-oxygen environment of the ISS.
Bacteria have also developed the ability to tolerate the intense radiation exposure that is present on the ISS. Radiation can cause DNA damage and mutations, which can be fatal for bacteria. However, some bacteria have developed mechanisms to repair radiation-induced DNA damage, allowing them to survive and reproduce in the extreme environment of the ISS.
Learn more about International Space Station (ISS) at : https://brainly.com/question/13048265
#SPJ4
What are the important functions of the respiratory system?
Answer:The important functions of the respiratory system are to provide oxygen to the body's cells, remove carbon dioxide from the body, and regulate the pH of the body's fluids. Additionally, the respiratory system helps to regulate body temperature, filter out airborne particles, and produce vocal sounds.
Explanation:
A kingdom of living things that have cells with a nucleus, have cell walls that contain chitin, and are heterotrophs
Fungi are a kingdom of living things which have cells with a nucleus, have cell walls that contain chitin, and are heterotrophs.
Classification of living beings is very important as it allows us to systematically study their characteristics. All the living thing present on the Earth are classified into 5 kingdoms which are the Protista, Monera, Fungi, Plantae and Animalia.
The fungi kingdom includes organisms such as yeasts, mushrooms and molds. Fungi are multicellular and eukaryotic. They have a nucleus. Their cell walls are chitinous which means that they contain chitin. Their mode of nutrition is heterotrophic, that is, they are dependent on other organisms to obtain their food.
To know more about fungi here
https://brainly.com/question/19351175
#SPJ4
Select the correct picture.
Which picture shows a portion of a plant that is directly involved in pollination?
The portion of the plant that is directly involved in the pollination process is the flower portion that is present in the second option, as the flower has the female part that can fertilize to give rise to the zygote.
What is the pollination process in plants?In plants, the pollination process happens, and as a result, a new plant is developed and the pollination can be carried out by many factors, such as the wind, honey bees, and others, and they help the flowers be fertilized.
Hence, the portion of the plant that is directly involved in the pollination process is the flower portion that is present in the second option, as the flower has the female part that can fertilize to give rise to the zygote.
Learn more about the pollination process here.
https://brainly.com/question/14014777
#SPJ1
Answer:
The second option, the pink flower
Explanation:
Which of the following statements best describes an unintended environmental consequence of aquaculture fish-farm enclosures located in estuaries?
Aquaculture enclosures can harbor parasites that can negatively affect wild populations that breed in estuaries.
The best description for an unintended environmental consequence of aquaculture fish-farm enclosures located in estuaries is: (D) Aquaculture enclosures can harbor parasites that can negatively affect wild populations that breed in estuaries.
Estuaries are the coastal water bodies where the freshwater from rivers and salt water from the oceans mix together. Estuaries are the partially covered water bodies that act as transition zones. Hence they form an example of ecotone.
Aquaculture is the farming, breeding and raising of the aquatic animals as well as plants. The process of aquaculture is inclined towards the commercial supply of seafood and other products.
The given question is incomplete, the complete question is:
Which of the following statements best describes an unintended environmental consequence of aquaculture fish-farm enclosures located in estuaries?
(A) Fish farms create waste that contaminates potential drinking-water resources for coastal communities.
(B) Aquaculture can decrease pressures on overexploited fisheries, increasing fish populations.
(C) Cultivated fish can escape and breed with wild populations, increasing the population size of wild fish in coastal waters.
(D) Aquaculture enclosures can harbor parasites that can negatively affect wild populations that breed in estuaries.
To know more about aquaculture, here
brainly.com/question/30041532
#SPJ4
The respiratory system of the body can be injured by volcanic _____ that comes from a volcanic eruption.ashbouldersrock
Taking in volcanic exhaust clouds aggravates the lungs and mucous layers. It can influence how well your lungs work. Volcanic exhaust clouds may likewise influence your insusceptible framework.
One long-haul impact of volcanic debris is silicosis. Silicosis is a sickness bringing about lung debilitation and scarring, from openness to particles of free translucent silica. Minerals that are related to silicosis incorporate quartz, cristobalite, and tridymite, all possibly present in volcanic debris.
The most widely recognized consequences for well-being brought about by volcanic ejections incorporate horrendous wounds, consumption, suffocation, skin aggravation, eye wounds and conjunctivitis, respiratory issues, and even passing.
Debris particles might contain translucent silica, a material that causes a respiratory infection called silicosis.
To learn more about volcanic here
https://brainly.com/question/1283357
#SPJ4
What are the advantage and diadvantage to a plant pecie that i pollinated by only one type of pollinator?
The advantages of one type pollinator are increased pollination efficiency, reduced competition, and genetic stability, while the disadvantages are high dependency, limited distribution, and low genetic diversity.
A plant species that is pollinated by only one type of pollinator may have increased efficiency, reduced competition during the pollination process, as well as genetic stability. However, it also has a high dependency on that specific pollinator species. If the population of the pollinator declines, the plant species may also decline or become extinct. Additionally, this type of plant species typically has a limited distribution and is more vulnerable to environmental changes that can affect the distribution or abundance of its specific pollinator. It also has low genetic diversity which can make it more vulnerable to disease or other environmental pressures.
To learn more about pollination visit: https://brainly.com/question/3431390
#SPJ4
Your question seems incomplete, but I assume the question was:
"What are the advantages and disadvantages to a plant species that is pollinated by only one type of pollinator?"
Does massage loosen tight muscles?
Yes, massage can lossen tight muscle.
In general ,Massage will help in relaxation of tight muscles, by separating and loosening muscles fiber. Muscles that are elongated and stretched after message can releases tension which helps in easy movement.
Hence, the most common types of massage that should be advised for relieving tight muscles comprises of deep tissue massage and remedial massage. Out of which Deep tissue massage are used for relieving tight muscle by treating the inner most or deeper layers of muscle and fascia. Some times Stretching and applying hot and cold pack in alternating manner can also helps in loosening of tight muscle.
To learn more about Muscles , here
brainly.com/question/9883108
#SPJ4
the urinary problem caused by interference with the normal nerve pathways associated with urination known as
The urinary problem caused by interference with the normal nerve pathways associated with urination known as neurogenic bladder.
Neurogenic bladder is a urinary problem caused by interference with the normal nerve pathways associated with urination. It is a condition wherein the nerves connected to the bladder do not function properly, which leads to difficulty in controlling the bladder and emptying it properly. This can lead to a wide range of symptoms, including difficulty in starting urination, an inability to empty the bladder fully, incontinence, and urinary tract infections.
The primary cause of neurogenic bladder is usually damage to the nerves that control the bladder. This can be due to a variety of conditions, including traumatic brain or spinal cord injuries, multiple sclerosis, Parkinson’s disease, stroke, and diabetes. In some cases, the underlying cause is unknown.
The symptoms of neurogenic bladder are usually the result of an inability to control the flow of urine. This can lead to an overactive bladder, which can cause frequent urges to urinate, even when the bladder is not full. In some cases, the inability to completely empty the bladder can lead to urinary retention, which can cause urinary tract infections. In addition, the condition can also cause incontinence, or the inability to control the flow of urine.
Learn more about urinary tract infections at :https://brainly.com/question/13251561
#SPJ4
What are the 5 main food groups and their function?
Five main food groups are Carbohydrates ,Protein, Dairy products, Fruit and vegetables and Fats and sugars.
These five food groups are responsible for providing wide array of vitamins and minerals that our body needs for proper and efficient functioning .
Carbohydrates are body's primary source of energy or preferred energy source. Carbs are generally broken down by the body into glucose which is also a type of sugar. Protein are responsible to work with cells for maintaining proper structure, function, and regulation of the body's tissues and organs. vegetables and fruits helps lower blood pressure, reduce the risk of heart disease and stroke, prevent cancers. Fats store energy and protect vital organs .
To learn more about Carbohydrates , here
brainly.com/question/29775112
#SPJ4
19. What do you expect when the cell wall of a plant cell is removed by a certain way, then put in distilled water? a)The cell takes a longer time to swell. b)The proteins that are present in the cytoplasm exit through the cell membrane. c) The cell shrinks. d) The cell bursts. why is the correct answer (d)
The cell bursts when the cell wall of a plant cell is removed by a certain way, then put in distilled water because the cell wall is removed, the cell would get wet, which would cause it to burst..
How do plant cells react to exposure to distilled water?Putting a plant cell in distilled water causes it to become turgid. This is due to a process called osmosis, which causes the plant cell's cytoplasm to swell up and firmly press up against the cell wall as it absorbs water from the hypotonic distilled water.
Cell walls stop excessive endosmosis from happening when water enters the cell, which also prevents plant cells from bursting. If the cell wall were to be broken, water would enter the space and the cell would eventually burst.
To know more about cell wall visit:
https://brainly.com/question/965751
#SPJ1
Why can't calico cats reproduce?
Answer:
How do calicos reproduce? Due to their unique genetic makeup (and the fact that male calico cats are born sterile), calico cats cannot actually be bred. Rather, nature produces these colorful kitties randomly.
Explanation:
Unikonta is a supergroup that includes all of the following except _____.
A) fungi
B) protists
C) animals
D) plants
Numerous protists are included in the supergroup unikonta together with mammals and fungi. Amoebas make up a large portion of Unikont protists.
Which of the following categories of eukaryotes is not one of the four?Organisms called eukaryotes have nuclei and cell organelles that are both membrane-bound. Eukaryotes make up every kingdom except from Kingdom Monera.
What are the four protist supergroups?The largest eukaryotic subcategories, known as eukaryotic supergroups, have been identified. The eukaryotes can be split into four groups since there are currently four of them. The archaeplastida, SAR, excavata, and unikonts, also known as Amorphea, are described here.
To know more about protists visit:-
https://brainly.com/question/1626285
#SPJ1
how deos the structure of water molecule result in the hydrogen bodning ? use evidence from the image below
The structure of water molecule result in the hydrogen bonding in that:
The structure of a water molecule results in hydrogen bonding due to the distribution of electrons in the molecule. Water molecules are made up of two hydrogen atoms bonded to a single oxygen atom, forming the chemical formula H2O.What is the hydrogen bonding about?The oxygen atom has a higher electronegativity than the hydrogen atoms, which means it is more effective at attracting and holding onto electrons. As a result, the oxygen atom has a partial negative charge and the hydrogen atoms have partial positive charges.
Therefore, a partial positive charges on the hydrogen atoms are attracted to the partial negative charge on the oxygen atom of another water molecule, forming a hydrogen bond. This is a weak chemical bond, but it is significant enough to give water many of its unique properties, such as its high surface tension and ability to act as a solvent.
Learn more about hydrogen bonding from
https://brainly.com/question/1426421
#SPJ1
provide 2 reasons that support a balance or homeostasis of nitrogen compounds in an ecosystem
Two reasons that support a balance or homeostasis of nitrogen compounds in an ecosystem are:1. Nitrogen is a key component of life: Nitrogen is an essential component of life, and it is the fourth most abundant element in the universe.
All living organisms, including plants, animals, and bacteria, require nitrogen to survive and thrive. Nitrogen is essential for the production of proteins and nucleic acids, which are the building blocks of life. Nitrogen compounds such as ammonia, nitrate, and nitrite are critical components of the nitrogen cycle.
Nitrogen is a limiting nutrient: Nitrogen is often a limiting nutrient in ecosystems. Nitrogen is essential for the growth and reproduction of plants, which are the foundation of most ecosystems.
Learn more about homeostasis:
https://brainly.com/question/28270473
#SPJ2
What is the genotypic ratio of 50%?
A 1:1 phenotypic ratio occurs when two possible genotypes have a 50% chance of developing when organisms are crossed. The chances of getting the ratio to 50% depicts both the recessive as well the dominant traits all together.
Phenotype, a person's or a species' observable traits and attributes, is influenced by genotype. Depending on the trait, genetics can impact phenotypic to varying degrees. For instance, genotype alone determines the colour of a pea plant's petals. Depending on the alleles present, the pea plant's petals can be either purple or white. But the genotype has a very small impact on some traits. These traits are occasionally referred to as complex traits since they are impacted by a variety of variables, including environmental and epigenetic influences. Due to the influence of environment and growing conditions, even individuals with the same genotype do not all look or behave the same.
To learn more about genotype click on the given link: https://brainly.com/question/26124553
#SPJ4
A(n) codes for a protein, such as a repressor, that controls the transcription of another gene or group of genes.
Administrative quality codes for a protein, like a repressor, that controls the record of one more quality or gathering of qualities. Administrative proteins frequently tie to the administrator to control the articulation of the operon.
The last quality codes for a protein called "the repressor" or "the lac repressor", which capabilities to a repressor of the lac operon. The quality lacI is arranged promptly upstream of lacZYA however is interpreted from a lacI advertiser.
A repressor, as connected with genomics, is a protein that restrains the declaration of at least one quality. The repressor protein works by restricting to the advertiser district of the gene(s), which forestalls the development of courier RNA (mRNA). Repressor proteins are fundamental for the guideline of quality articulation in cells.
To learn more about repressor genes here
https://brainly.com/question/28579454
#SPJ4
Explain the application of biology epecially the role of microbiology and biotechnology for the growing public and global health need
A, in the development effective diagnotic ,prevention ,and treatment meaure including production of novel drug and recombinant vaccine
B,in the production of nutritionally enriched genetically modified crop and anmimal to alloviate food inecurity which i a common dilemma particularly in underdeveloped countrie
Biotechnology is the application of biology to the creation of new things, processes, and creatures with the goal of enhancing society and human health.
A. Medical biotechnology
It is a subspecialty of medicine that conducts research on living cells and cell components before creating pharmacological and diagnostic products. These products support both disease prevention and therapy. Modern diagnostic and preventative medical equipment, including diagnostic test kits, vaccines, and radio-labeled biological treatments used for imaging and analysis, have been made possible by biotechnology advancements.
B. Genetically modified crop
Biotech crops can increase crop quality and, in some situations, productivity, which can increase farming's profitability. Certain of these crops can simplify tasks and improve farmer safety. Farmers might spend less time growing their crops and more time concentrating on other lucrative pursuits as a result.
Learn more about Biotechnology here:
https://brainly.com/question/28609422
#SPJ4
How did this data further support the hypothesis that DNA is the transforming factor?
In a very simple experiment, Oswald Avery's group showed that DNA was the "transforming principle.
Why is DNA the transforming factor?Oswald Avery, Colin MacLeod, and Maclyn McCarty appear that DNA (not proteins) can transform the properties of cells, and simplify the chemical nature of genes. Avery, MacLeod, and McCarty recognize DNA as the "transforming principle" while learning about Streptococcus, bacteria that can cause pneumonia.
When isolated from one tension of bacteria, DNA was able to transform another strain and give out characteristics to that second strain. DNA was convey hereditary information.
So we can conclude that the transforming principle Griffith noticed was the DNA of the III-s strain bacteria.
Learn more about DNA here: https://brainly.com/question/16099437
#SPJ1
Which mutation caused Lucy immunodeficiency disease?
Hyper IgE syndrome, Job's syndrome is a rare condition with symptoms Lucy's had. A STAT3 gene mutation is the primary cause of the immunodeficiency, which affects approximately one person in a million.
In every tissue of the body, the STAT3 protein is active. It is necessary for life and plays a significant role in the growth and operation of many bodily systems. Signals for the maturation of immune system cells, particularly T cells and B cells, are transmitted by the STAT3 protein in the immune system. Additionally, the protein plays a part in cellular processes that support allergic reactions and is involved in the regulation of inflammation, one of the immune system's responses to infection or injury.
Learn more about mutation here:
https://brainly.com/question/17130462
#SPJ4
How does hypertension cause stroke?
In hypertension, The arteries that carry oxygen and blood to the brain can burst or become blocked by high blood pressure, resulting in a stroke.
There are many ways that high blood pressure can harm your health. It has the potential to seriously harm vital organs like your eyes, brain, kidneys, and heart. Your arteries may become less elastic as a result of high blood pressure, reducing the flow of blood and oxygen to your heart and resulting in heart disease. A stroke can result in severe impairments of speech, movement, and other fundamental activities. You can also die from a stroke.
Know more about hypertension here: https://brainly.com/question/29799896
#SPJ4
Please help me with this!!
The answers to the table are genotype, phenotype, trait, heredity, chromosome, allele, in that sequence.
How does a chromosome explain work?
a component that can be found in a cell's nucleus. Proteins and DNA are arranged into genes on a chromosome. There are typically 23 pairs of chromosomes in each cell.
What is a chromosome's primary purpose?
DNA may be precisely duplicated during these cell divisions thanks to chromosomes. So, once more. Our cells' nuclei include chromosomes, which enable precise DNA duplication during cell division. This guarantees that our internal processes go smoothly and effectively.
To know more about chromosome visit:
brainly.com/question/1596925
#SPJ1
INTRO TO CELL RESPIRATION OVERVIEW POGIL: All cells need energy all the time, and their primary source of energy is ATP. The methods cells use to make ATP vary depending on the availability of oxygen and their biological make-up. In many cases the cells are in an oxygen-rich environment. For example, as you sit and read this sentence, you are breathing in oxygen, which is then carried throughout your body by red blood cells. But, some cells grow in environments without oxygen (yeast in wine-making or the bacteria that cause botulism in canned food), and occasionally animal cells must function without sufficient oxygen (as in running sprints). In this activity you will begin to look at the aerobic and anaerobic processes that are used by all organisms to produce ATP. Which statement is NOT true based on this intro
The products formed as a result of cellular respiration are ATP, water and carbon dioxide.
The cells require energy to perform all their cellular functions. The source of energy for them is ATP which is adenosine triphosphate. The amount of ATP which is produced by a cell depends on its requirement and also on the amount of oxygen that is available.
Depending on whether a particular organism requires oxygen or not, they can be classified as aerobic and anaerobic. Aerobic organisms are the ones which require oxygen whereas anaerobic organisms do not require oxygen. The reaction for cellular respiration can be represented as:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP
Carbon dioxide, water and ATP are formed as products in this reaction.
To know more about cellular respiration are
https://brainly.com/question/12320031
#SPJ4
As a result of sexual reproduction, an organism can pass a gene mutation to its offspring if the mutation occurs in
An organism can pass a gene mutation to its offspring if the mutation occurs in gamete as a result of sexual reproduction .
A mutation can be transmitted down to an organism's progeny if it happens in a germ-line cell (a cell that will develop into gametes, such as egg or sperm). This implies that the mutation will be present in each and every cell of the growing embryo. A parent's genetic mutation may be carried on to their child through their egg or sperm.
Throughout a human's life, these inherited mutations are prevalent in almost every cell of their body. Cystic fibrosis, haemophilia, and sickle cell disease are examples of hereditary mutations. Large-scale evolution only takes into account mutations that can be passed on to future generations. These are known as germ line mutations and they happen in reproductive cells such as eggs and sperm. Environmental factors contribute to mutations.
For such more questions on Mutation :
brainly.com/question/13923224
#SPJ4
What processes are used in light-independent reactions (photosynthesis)? Please name all.
What processes are used in light-dependent reactions (photosynthesis)? Please name all.
Word Bank:
Processes: ATP Synthase, Calvin Cycle, Electron Transport Chain, Photosystem I, Photosystem II
The light-independent reactions use stored chemical energy from the light-dependent reactions in order to fix carbondioxide gas and create a product that can be converted into glucose.
Define the process of photosynthesis?Photosynthesis is that kind of process in which green plants and organisms prepare their own food in the presence of sunlight to neutralize the reaction.
The process of photosynthesis takes place in two stages one stage is known as a light-dependent reaction while the other stage is known as a light-independent reaction.
ATP Synthase:
The ATP synthase is also known as a mitochondrial enzyme which is localized inside the inner membrane, where it catalyzes the synthesis of ATP from ADP and phosphate.
Calvin Cycle:
The process of the chemical reaction is performed by the plants for the reduction of carbon dioxide and other compounds into glucose.
Electron Transport Chain:
The electron transport chain is that chain in which a series of four protein complexes couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation.
Photosystem 1:
In this system, the proteins are responsible for the precise arrangement of cofactors and determining redox properties of the electron transfer centers.
Photosystem 2:
First of all the photosystem 2 precise arrangement of cofactors and determine the redox properties of the electron transfer centers.
So we can conclude that the process of photosynthesis is in which the green plants and organisms prepare their own food in the presence of sunlight and oxygen.
Learn more about Photosynthesis here: https://brainly.com/question/19160081
#SPJ1
What is the likely cause of the blockage in the following scenario?
A plumber, cleaning out recently blocked lines, indicates that there are roots blocking the sewer system. There are no trees immediately over the sewer line and have not been for years; there is only a small group of trees on the side of the property, several yards from the line.
taproots
lateral roots
aerial roots
primary roots
How can a cell increase surface area without increasing the volume?
Cells can increase their surface area by folding the plasma membrane. Total cell surface area should increase when a cell divides into two daughter cells.
There are two illustration of membrane supply that support cell division:
(1) unfolding of small surface membrane reservoirs such as microvilli and folds, and (2) exocytosis of intracellular vesicles.
As the cell radius increases, the surface area increases as the radius squared, but the volume increases as the radius cubed (much faster).
Increasing the surface area of the cell increases the amount of material that diffuses into the cell. As volume and surface area increase, volume increases more rapidly, so for every doubling of cell volume, the surface area available for uptake is halved.
For more information on cell , visit :
https://brainly.com/question/27827698
#SPJ4
Cells actively involved in secreting proteins would contain large numbers or quantities of ________.
Cells producing huge portions of proteins would have numerous nucleoli. One potential explanation that the proteome is such an ample deal bigger than the genome is that mRNAs can be grafted in elective ways in this manner expanding the Digi of items paid from a clear rate.
Ribosomes are especially plentiful in cells that orchestrate a lot of protein. For instance, the pancreas is answerable for making a few stomach-related catalysts and the cells that produce these compounds contain numerous ribosomes.
Cells that successfully produce proteins have various ribosomes in the cytoplasm, which give it a dull blue tone (basophilia) when stained with Wright stain. Cytoplasmic basophilia is especially unmistakable in erythroid forerunner cells when hemoglobin and other cell parts are effectively orchestrated.
To learn more about Cells here
https://brainly.com/question/30046049
#SPJ4
Normal text Calibri
25) Look at the way the contour lines point or bend on the topographic map below. Match the blanks on
the map below using the terms "Upstream" or "Downstream" based on the direction the stream is
flowing.
Zo
1.?
2.?
All rivers go from higher to lower heights along a downhill slope that is perpendicular to the contour line above them. The V-shaped contour typically points upstream (the opposite direction from the flow of a stream or river).
What exactly is a contour line?A contour line is an imaginary line on a map that has all of its points at the same elevation above a datum plane, often mean sea level.
What is 7th-grade contour line?Contour lines are fictitious lines that connect places of similar height. Contouring is a technique for displaying height on a map by utilizing contour lines. This technique allows us to depict the three-dimensional reliefs on a flat map. curved lines.
To know more about contour line visit:-
https://brainly.com/question/3543105
#SPJ1
In which order would you cross all the layers surrounding a bacterial cell if you started on the outside
I would cross all the layers surrounding a bacterial cell if I started on the outside capsule, plasma membrane, and cell wall.
What is the cell envelope?The cell envelope is а descriptive term for the severаl lаyers of mаteriаl thаt envelope or enclose the protoplаsm of the cell. The cell protoplаsm (cytoplаsm) is surrounded by the plаsmа membrаne, а cell wаll аnd а cаpsule.
The cell wаll itself is а lаyered structure in Grаm-negаtive bаcteriа. Аll cells hаve а membrаne, which is the essential аnd definitive chаrаcteristic of а "cell". Аlmost аll procаryotes hаve а cell wаll to prevent dаmаge to the underlying protoplаst. Outside the cell wаll, foremost аs а surfаce structure, mаy be а polysаcchаride cаpsule or glycocаlyx.
For more information about cell envelope refers to the link: https://brainly.com/question/28231946
#SPJ4