Which carbohydrate makes up the cell walls of plants? a chitin b cellulose glycogen d starch​

Answer:

La célula (del latín cellula, diminutivo de cella, ‘celda’)1​ es la unidad morfológica y funcional de todo ser vivo. De hecho, la célula es el elemento de menor tamaño que puede considerarse vivo.2​ De este modo, puede clasificarse a los organismos vivos según el número de células que posean: si solo tienen una, se les denomina unicelulares (como pueden ser los protozoos o las bacterias, organismos microscópicos); si poseen más, se les llama pluricelulares. En estos últimos el número de células es variable: de unos pocos cientos, como en algunos nematodos, a cientos de billones (1014), como en el caso del ser humano. Las células suelen poseer un tamaño de 10 µm y una masa de 1 ng, si bien existen células mucho mayores.

Célula animal

La teoría celular, propuesta en 1838 para los vegetales y en 1839 para los animales,3​ por Matthias Jakob Schleiden y Theodor Schwann, postula que todos los organismos están compuestos por células, y que todas las células derivan de otras precedentes. De este modo, todas las funciones vitales emanan de la maquinaria celular y de la interacción entre células adyacentes; además, la tenencia de la información genética, base de la herencia, en su ADN permite la transmisión de aquella de generación en generación.4​

Explanation:

Answer:

A cell is the smallest unit of life. Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. There are probably up to 1000000000 cells in the human body and they are multiplying every minute. dead cells turn into hair, dust, dead skin. You can notice when it's dead because if you pinch a certain part of your body and it doesnt hurt, that part is dead.

Electronic surveillance is conducted by various entities, including government agencies, law enforcement agencies, intelligence agencies, and private organizations.

Types of electronic surveillance that impact people's lives include surveillance through communication interception, video surveillance, and data collection. Whether one should be paranoid about this depends on personal beliefs, concerns about privacy, and the extent of surveillance activities.

Electronic surveillance involves monitoring and gathering information through electronic means. It can be conducted by government agencies, such as intelligence agencies and law enforcement agencies, to gather intelligence, prevent crime, or ensure national security. Additionally, private organizations may engage in electronic surveillance for various purposes, such as monitoring employee activities or protecting their assets.

Types of electronic surveillance that impact people's lives include communication interception, where phone calls, emails, or text messages are monitored; video surveillance, where cameras are used to observe public spaces or private property; and data collection, where personal information is collected through online activities, social media, or digital services.

Whether one should be paranoid about electronic surveillance depends on individual perspectives. Some individuals may be concerned about the potential invasion of privacy and the misuse of personal information. Others may have a more trusting outlook, considering surveillance as a necessary measure for security and public safety. The level of paranoia may vary based on personal beliefs, experiences, and the extent of surveillance activities in a particular region or context.

Ultimately, the decision of whether to be paranoid about electronic surveillance is subjective. It is important for individuals to be aware of their rights, stay informed about surveillance practices, and make informed decisions about privacy and security based on their own values and concerns.

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Answer:

carrying capacity is how much population an environment can hold without its resources being used up/ when a Population Hits Its Limit. an example would be The Carrying Capacity of North American Deer. the Carrying Capacity of Grazing Cattle.

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Answer:

its the second one I think

The corticospinal tract relays motor impulses from the CNS to the muscles of the limbs and trunk.

The corticospinal tract is a collection of axons that connect the cerebral cortex to the spinal cord. It contains information related to the movement of the body parts. It has two parts, the lateral and anterior corticospinal tract.

The main functions of the corticospinal tract are conducting impulses from the brain to the cranial nerves and voluntary motor functions.

Thus, the corticospinal tract relays motor impulses from the CNS to the muscles of the limbs and trunk.

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Answer:

its going to be number 1

Answer:

  (d)  24057

Explanation:

You want to know how many bacteria are grown during the 7th hour in a culture that starts with 11 bacteria and triples in amount at the end of every hour.

If the starting number is 11 at hour 0, then there will be triple that number, 11×3 = 33 at the end of the 1st hour. At the end of the 2nd hour, the number will be triple that, or 33×3 = 99.

The number of bacteria at the end of h hours can be modeled by ...

  b = 11×3^h

Using this formula, we find the number at the end off the 7th hour to be ...

  b = 11×3^7 = 24057

24057 bacteria are grown during the 7th hour.

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Answer:

I believe it is at high latitudes

Explanation:

I say this because many glaciers are found in Greenland and Antarctica which are both located in higher latitudes

Glaciers are found at HIGH latitudes (Option D).

Latitude refers to the geographic coordinates which are used to indicate specific north-south positions on the Earth's planet.

Low latitudes are geographic coordinates found between the 0 degrees (Equator) and 30 degrees north-south, whereas high latitudes are found between 30 degrees and 90 degrees north-south positions.

At low latitudes, the energy from the sun is able to melt the polar ice.

Thus, glaciers are found at high latitudes because the highest latitudes get a minor amount of energy from the sun compared to low latitudes.

In conclusion, glaciers are found at HIGH latitudes (Option D).

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(C) 1 million years ago is the approximate time that the species diverge. This is because Genetic analysis at a neutral locus indicates that these species differ by 100 substitutions. If there are 10 substitutions separating species 1 and 2.

Divergence in evolutionary biology refers to an evolutionary process in which a population of an inbreeding species splits into two or more descendant species that have progressively diverged in their morphologies and structural characteristics.

The difference between species 1 and 3 is 100 substitutions, and humans split off 10 million years ago. As a result, there will be 10 substitutions in a million years. As a result, 1 million years ago, species 1 and 2, which are divided by 10 substitution, diverged.

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Question correction:

Imagine that, of three species, it is known that species 1 and 3 were separated 10 million years ago, based on geologic measurements. Genetic analysis at a neutral locus indicates that these species differ by 100 substitutions. If there are 10 substitutions separating species 1 and 2, approximately how long ago did these species diverge?

A. 0.1 million years ago

B. 10 million years ago

C. 1 million years ago

D. 100 million years ago

Vascular tissue is made up of the plant's primary transport systems, xylem and phloem. They are found in vascular bundles in all plant organs, crossing roots, stems, and leaves.

Xylem is in charge of transporting water and dissolved ions from the roots up through the plant. The vascular tissue that transports and distributes organic nutrients is known as phloem. Clubmosses, horsetails, ferns, gymnosperms (including conifers), and angiosperms are examples of vascular plants (flowering plants). Tracheophyta, Tracheobionta, and Equisetopsida sensu lato are some of the scientific names for the group.

The phloem serves as both a signaling system and a structural component of the plant. This tissue is made up of three cell types: sieve elements, parenchyma, and sclerenchyma.

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Answer:

vena cava

Explanation:

Answer:

it is actually pulmonary vein

Explanation:

Answer:

The answer you're looking for is Ischemic stroke

It is crucial that there be enough items or events being sampled to provide a reliable estimate for the entire population.Choice A

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The statement that is true about CD4* Th17 cells is that they produce effector cytokines IL-17 and IL-22 which help recruit neutrophils and stimulate antimicrobial peptide production (iii). They also require the master transcription factor RORgammaT for their development (ii). However, they are able to form T effector memory (TEM) T cell populations, which makes statement (i) false. Additionally, they do not require the transcription factor NFAT for IL-2 production downstream of TCR activation, making statement (iv) false. Finally, Th17 cells are important for defense against both extracellular and intracellular bacterial infections, making statement (v) false. Therefore, the correct answer is ii, iii.
the true statements about CD4+ Th17 cells are:

- Require the master transcription factor RORgammaT for their development (ii)
- Produce effector cytokines IL-17 and IL-22 which help recruit neutrophils and stimulate antimicrobial peptide production (iii)
- Do not require the transcription factor NFAT for IL-2 production downstream of TCR activation (iv)

Therefore, the correct option would be ii, iii, and iv. Th17 cells play a crucial role in defending against extracellular bacterial and fungal infections, as well as contributing to inflammation in autoimmune diseases. Their development and function are regulated by various transcription factors and cytokines, which ultimately allow them to carry out their protective role within the immune system.

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The correct statement about CD4+ Th17 cells is: ii. Require the master transcription factor RORgammaT for their development. the correct answer is: ii, iii, and iv

CD4+ Th17 cells are a subset of CD4+ T helper cells that play a role in immune responses, particularly in defense against extracellular pathogens. The development of Th17 cells is regulated by the transcription factor RORgammaT.

The other statements provided are not true:

i. CD4+ Th17 cells can form T effector memory (TEM) T cell populations. TEM cells are a subset of memory T cells that are capable of rapidly responding to reinfection.

iii. CD4+ Th17 cells do produce effector cytokines IL-17 and IL-22, which have various functions including recruitment of neutrophils and stimulation of antimicrobial peptide production.

iv. CD4+ Th17 cells do require the transcription factor NFAT for IL-2 production downstream of TCR activation. NFAT is involved in the regulation of IL-2 production in T cells.

v. CD4+ Th17 cells are not specific to defense against intracellular bacterial infections only. They have a broader role in immune responses, including defense against extracellular pathogens and involvement in autoimmune diseases and inflammation.

Therefore, the correct answer is: ii, iii, and iv

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GREETINGS!

10 units of energy because in food chain the energy is lost and this energy loss is 90% at each trophic level so only 10% of energy is passed soo if grass has 10000 energy units mouse will have 1000, snake will have 100 and then hawk will have only 10 units

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Answer: Yes

Explanation: They are adapted for photosynthesis by having a large surface area, and contain openings, called stomata to allow carbon dioxide into the leaf and oxygen out.

Answer:

1. Photosynthesis transforms light energy into chemical energy

2. chlorophyll captures light energy

3. photosynthesis creates energy from carbon dioxide and water.

Explanation:

Therefore, first 3 statements are true.

I hope it helps.

Some people may be opposed to the use of biotechnology due to concerns related to its potential negative impacts.

These include the development of resistant microorganisms, competition between modified and native organisms, and the production of toxic materials. Biotechnology involves the manipulation of organisms and their genetic material, which can lead to the development of resistant microorganisms. This is a significant concern as it could contribute to the emergence of drug-resistant bacteria or other organisms, making it more challenging to treat infectious diseases effectively. The potential for genetic modifications to confer resistance poses risks to public health and agriculture. Additionally, the introduction of genetically modified organisms into ecosystems may disrupt the balance of native species and create competition. Modified organisms may have advantages over their non-modified counterparts, potentially leading to changes in biodiversity and ecological interactions. This can have wide-ranging consequences for ecosystems and raise ethical concerns about the alteration of natural systems.

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As seen through a powerful microscope, the inside of a single-celled organism contains several structures that perform distinct functions.

"A single-celled organism contains various structures that perform specific functions within the cell. These structures are listed below;

Cytoplasm is the fluid inside the cell membrane where all the cell's internal structures are suspended. Nucleus is the largest structure in the cell, and it is responsible for regulating the cell's activities and controlling cell division.Mitochondria are the cell's powerhouses, responsible for energy production. They transform glucose, a form of sugar, into ATP, which is used to power cellular processes.Ribosomes, which are small organelles found in the cytoplasm, are responsible for protein synthesis.

Lysosomes are small organelles in the cell that break down and digest cellular waste materials and other foreign substances that enter the cell.A large central vacuole, which occupies most of the cell's interior, stores nutrients, water, and waste products.Chloroplasts, which are organelles found in plant cells, are responsible for photosynthesis and the production of energy-rich sugars from sunlight and carbon dioxide.The cytoskeleton is a complex network of filaments that provides the cell with its structure, shape, and mobility. It is made up of microtubules and microfilaments.

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Organism’s slide would most likely be categorized as "unicellular with cilia for movement" is B. paramecium.

Paramecium are eukaryotes. In comparison to prokaryotic organisms, consisting of micro organism and archaea, eukaryotes have well-prepared cells. Paramecium are prey for Didinium which might be unicellular ciliates. Paramecium aids withinside the carbon cycle with the aid of using feeding on decaying vegetation and micro organism. They also can be used as a version organism in research. Paramecia collect poison for numerous days if uncovered to a sublethal dose till they end up lethargic, and having absorbed a deadly dose they in the end expire. The poisonous cloth isn't particulate, and it's miles with ease separated from the micro organism with the aid of using centrifugation.

Thus, the correct option is B.

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Answer:

-making teeth strong

-helping with muscle function

Explanation:

Calcium is a nutrient that all living organisms need, including humans. It is the most abundant mineral in the body, and it is vital for bone health.

The correct functions of calcium are:

Therefore, the correct options are A, B and D.

In the body, calcium plays an important role and supports a variety of processes. It is essential for strong teeth and bones as it provides stability and support. For muscles to contract, nerve impulses must be transmitted, and calcium plays an important role in this process.

Additionally, it helps regulate water balance, promoting optimal cellular hydration and fluid balance inside the body. However, calcium is not directly required for the synthesis of amino acids. Its many roles in skeletal strength, muscle activity and cellular hydration highlight how important it is to maintaining general health.

Therefore, the correct options are A, B and D.

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Your question is incomplete, most probably the complete question is:

What are some functions of calcium?

Select all that apply.

Answer:

woodlands and lush vegetation

Explanation

Deciduous woodlands contain trees with broad leaves such as oak, beech and elm. They occur in places with high rainfall, warm summers and cooler winters and lose their leaves in winter.

Answer:

high rainfall, warm summers and cooler winters

the landscape contains  oak, beech, elm, Lichen, moss, ferns, wildflowers and other small plants

The temperature in a temperate woodland & shrubland biome is hot & dry in the summer with temperatures up to 100 degrees F. The winter is cool & moist with the low temperature about 30 degrees F. Precipitation: Annual rainfall is 10-17 in.  

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Parental pairings of alleles can be split up during crossing over alleles from genes that occur on the same chromosome sometimes appear to be inherited independently. The correct option is D.

Thus, The process of crossing over takes place during meiosis, more especially during prophase I of meiosis I.

Homologous chromosomes link together in this process, and portions of their DNA may be swapped or exchanged. Alleles recombine as a result of this genetic material transfer across homologous chromosomes.

The DNA strands of homologous chromosomes split and reassemble during crossing over, transferring genetic material from one to the other. The separation and recombination of alleles might result from this interaction, which can happen at different locations along the chromosomes.

Thus, Parental pairings of alleles can be split up during crossing over alleles from genes that occur on the same chromosome sometimes appear to be inherited independently. The correct option is D.

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Answer:

expressed

Explanation:

Factors in the environment affects how your genes are expressed and shown.

Answer: c

Explanation: just did it on edg

Answer:

Ingredient