Animal cells and plant cells both contain cell membranes that surround the outside of the cell. Plant cells have an additional outside layer, the cell wall.Select the statement(s) below that explain(s) why plants have the additional outer layer protection.Select ALL that apply.
A. The cell wall solely controls what enters and leaves the cell.
B. The cell wall provides structure for the plant, which allows it to grow up and out to absorb sunlight.
C. The cell wall is flexible and controls what enters and leaves the cell.
D. The cell wall is rigid and firm, limiting the cell shape.

Answer:

C

Explanation:

The skeleton relies upon the contraction and relaxation of muscles which are attached to bone in order to move. The muscular system is made up of three types of muscle, one of which is responsible for the movement of bone. To add to the confusion, the relationship between both muscles and bones is often lumped together as the musculoskeletal system, but to be sure, they are unique in their own ways.

In summary, bones can't move on their own, and therefore movement cannot be the skeletal system's function.

Answer:

Por difusión.

Explicación:

Los organismos simples como las bacterias, los protozoos, las algas y los hongos no tienen un sistema de excreción especializado. Hicieron la excreción a través del proceso de difusión en el que los materiales se mueven de la región de alta concentración a la región de menor concentración. Debido a esta difusión, hay una gran cantidad de material de agua presente, por lo que el material de desecho se mueve desde el interior del cuerpo al entorno exterior a través de la membrana presente alrededor de su cuerpo y este proceso de difusión también se utiliza para la absorción de nutrientes.

Answer:

Osmosis

Explanation:

Answer and Explanation:

There are four phenotypes: tall, short, round, wrinkled

Let us say that for the high trait, tall dominates over short. For the shape trait, round dominates over wrinkled. This is:

The fact that parental are dihybrid, tells us that their genotypes were TtRr

Cross:

Parental)        TtRr          x         TtRr

Gametes) TR tR Tr tr           TR tR Tr tr

Punnet Square)     TR           tR           Tr          tr

                  TR      TTRR     TtRR     TTRr       TtRr

                   tR      TtRR      ttRR       TtRr        ttRr

                   Tr      TTRr      TtRr       TTrr         Ttrr

                   tr       TtRr       ttRr        Ttrr           ttrr

F1)         Genotype    and    Phenotype

Phenotypic proportions  

Answer:

tissue

Explanation:

Answer:

the question is not clear

The complement of the given event, which states that at least one of the thirteen different blood donors is HIV+, refers to the scenario where none of the thirteen blood donors are HIV+.

In this complement event, all thirteen blood donors are free from HIV infection. It means that the entire group of blood donors does not include any individuals who have tested positive for HIV. The absence of any HIV+ donors in this complement event implies that all the donors are HIV-negative.

The complement of an event encompasses all possible outcomes that are not part of the original event. In this case, it represents the situation where there is no presence of HIV infection among the thirteen blood donors, indicating a group of individuals who do not carry the virus in their blood.

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Answer:

A scientific question

Explanation:

You need to have a question that can be answered by science, so therefore you can use the scientific method to solve the problem

Answer:

contaminated

Explanation:

Groundwater can be contimated by landfills and septic tanks

Because ocean acidification depletes seawater of the compounds necessary for these organisms to build shells and skeletons, shell-forming animals like corals, crabs, oysters, and urchins are the first to suffer.

This stunts their development and ultimately threatens their survival. Animals that consume shellfish will suffer if their populations decline, and this will have an impact on the entire ocean food chain.

As the rate of erosion outpaces the rate at which corals can regenerate, coral reefs, which are essential to the protection of coasts throughout tropical and subtropical regions of the world, may disappear, with devastating effects for linked ecosystems like mangrove and seagrass.

Marine plankton will disappear in the meantime in the north and south polar regions; some have already started to develop weaker and thinner shells.

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The structure that is part of the conducting portion of the airway is the bronchi.

Bronchi are a pair of breathing tubes that branch from the trachea (windpipe) into the lungs. Air is first drawn into the body via the mouth or nose, and then it passes through the trachea, which is the primary airway. After that, the bronchi are the next significant part of the respiratory system. They're responsible for bringing air into the lungs and delivering oxygen to the body's tissues. Bronchioles, on the other hand, are part of the respiratory zone, which is responsible for gas exchange. The bronchioles then divide into smaller branches called alveolar ducts, which in turn divide into tiny air sacs called alveoli, where oxygen and carbon dioxide are exchanged between the air and the bloodstream.

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Answer:

reactivity-In chemistry, reactivity is the impetus for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy.

Tarnishing- is a thin layer of corrosion that forms over copper, brass, aluminum, magnesium, neodymium and other similar metals as their outermost layer undergoes a chemical reaction. Tarnish does not always result from the sole effects of oxygen in the air.

endothermic -(of a reaction or process) accompanied by or requiring the absorption of heat.

(of a compound) requiring a net input of heat for its formation from its constituent elements.

Rusting-deteriorate through neglect or lack of use.

exothermic-of a reaction or process) accompanied by the release of heat.

(of a compound) formed from its constituent elements with a net release of heat.

HOPE THIS HELPSq(≧▽≦q)

Reactivity: the state or power of being reactive or the degree to which a thing is reactive.

Tarnishing:  lose or cause to lose luster, especially as a result of exposure to air or moisture.

Endothermic:  (of a reaction or process) accompanied by or requiring the absorption of heat.

(of a compound) requiring a net input of heat for its formation from its constituent elements.

Rusting: deteriorate through neglect or lack of use.

Exothermic: (of a reaction or process) accompanied by the release of heat.

(of a compound) formed from its constituent elements with a net release of heat.

Hope this helps!

Sincereley,

Answer:

The correct answer is : due to the hydrogen ions reacts and release high amount of energy with the strong acid.

Explanation:

Diluted acids are more corrosive then undiluted due to the presence of more H+ ions than the undiluted acids. The More the H+ ions are added the more corrosive the acid is.

When water is mixed with strong acid the hydrogen ions reacts with acid ions and a exothermic reaction takes place that release high amount of energy which boils violently, to avoid any accident it is advised to lab workers to wipe  if any splash self before washing.

Thus, the correct answer is : due to the hydrogen ions reacts and release high amount of energy with the strong acid.

Answer:

C Melting and cementation

The list of terms that best describe the formation of igneous rocks is Melting and cooling that is in option B, as igneous rocks are formed when molten rock such as magma or lava cools and solidifies.

Igneous rocks are formed from the magma and lava that are beneath the earth's surface, and the formation of igneous rocks begins with the melting of rock in the Earth's mantle and crust. Due to high temperatures and/or pressure, a volcanic eruption happens, and the lava and magma solidify after cooling down and depending on the cooling rate, igneous rocks can be intrusive or extrusive.

Hence, the list of terms that best describe the formation of igneous rocks is Melting and cooling that is in option B, as igneous rocks are formed when molten rock such as magma or lava cools and solidifies.

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Answer:

The oldest trilobite (ancient marine arthropods) fossils are about 525 million – 500 million years old. They are known as Redlichiida and they first appear in the fossil record in the Lower Cambrian period. The earliest Redlichiida are considered the ancestors of all other trilobite species.

Explanation:

Answer:

I think it should be: 2,130 million years

Explanation:

In the chart it says that Uranium 253 takes 710 million years for one half life. If 50% percent is 710 million years and then you half 50% again you will add on another 710 million years, getting 1,420 million years. However, it says that there is 12.5% of the original Uranium 253, so you need to add one more half life on, because 12.5% is half of 25%. In the end when you add three half lives together you get 2,130 million years.

The offspring of an Angora and Rex rabbit hybrid have fur that is significantly longer than that of a Rex rabbit. There is a 0.25 percent probability that the child will have long fur based on the genotype of the parents.

The length of the offspring's' fur indicates an imperfect dominant inheritance pattern. Incomplete dominance is an inheritance pattern in which the phenotype of the offspring closely matches that of one parent more than the other, but is intermediate between the phenotypes of the parents.

In this instance, the progeny have fur length that is roughly equivalent to that of an Angora rabbit but slightly longer than that of a Rex rabbit. This is an illustration of partial dominance.

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Carbohydrates and amino acids have different structural characteristics and serve distinct roles in biological systems.

While carbohydrates have diverse structural variations and play important roles in energy storage and cell-cell recognition, amino acids contribute to the structural diversity of proteins and have a broader range of functions, including enzymatic activity, signal transduction, and molecular recognition.

Carbohydrates are indeed structurally versatile molecules. They can exist as simple sugars or form complex structures such as polysaccharides and glycoproteins. Carbohydrates are involved in various biological processes, including energy storage (e.g., glycogen) and cell-cell recognition (e.g., blood group antigens). Their structural diversity allows for a wide range of functions in different organisms.

On the other hand, amino acids are the building blocks of proteins and exhibit significant structural diversity within their chemical composition. While there are 20 commonly occurring amino acids, their arrangement and sequence in proteins give rise to a vast array of protein structures and functions. Amino acids contribute to the structural versatility of proteins and enable them to carry out enzymatic reactions, signal transduction, molecular recognition, and other essential biological processes.

In summary, both carbohydrates and amino acids exhibit structural versatility, but amino acids, as the building blocks of proteins, provide a broader range of structural variations and functional diversity in biological systems.

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There is only one homozygotes (aabb) found among the F1 offspring. The correct answer is A) one.

To determine the number of homozygotes found among the F1 offspring in the dihybrid cross AaBb x aabb, we will use the following steps:

1. Determine the gametes that each parent can produce.
  Parent 1 (AaBb): AB, Ab, aB, ab
  Parent 2 (aabb): ab

2. Perform a Punnett square using these gametes.
  The Punnett square will have 4 rows and 1 column because Parent 1 can produce 4 different gametes, while Parent 2 can only produce 1.

3. Fill in the Punnett square to find the genotypes of the F1 offspring.
  | AB | Ab | aB | ab |
  ab | AaBb | Aabb | aaBb | aabb |

4. Identify the homozygotes among the F1 offspring.
  Homozygotes have identical alleles for a particular gene. In this case, only the offspring with the genotype "aabb" is a homozygote.

Therefore, there is only one homozygote (aabb) found among the F1 offspring. The correct answer is A) one.

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The conversion of 8 H₂O molecules to 2 H₂O molecules is a chemical change that occurs through a dehydration or condensation reaction. This process involves the removal of water molecules to form a larger molecule and requires energy to occur.

This is a reaction that occurs between two molecules, and results in the formation of a single, larger molecule, while releasing a small molecule, usually water. In this case, the small molecule is water (H₂O), hence the name dehydration or condensation reaction.
During this reaction, the 8 H₂O molecules combine to form 4 H₂O molecules. This reaction is often used in the laboratory to create polymers from monomers. It can also be used to produce certain biomolecules such as carbohydrates, proteins, and nucleic acids, as well as other chemical compounds.
In order to carry out this reaction, energy is required. The reaction occurs in several steps and involves the removal of water molecules from the original 8 H₂O molecules, forming a new, larger molecule. The reaction is reversible, which means that it can be carried out in both directions, depending on the conditions and reactants involved. Thus, the conversion of 8 H₂O molecules to 2 H₂O molecules is a chemical change that can occur through a process known as dehydration or condensation reaction.

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The following is a density-dependent limiting factor: the disease that is in Option a. The disease is a density-dependent factor that is dependent on the density of the population.

There are two types of factors that regulate the population: density-dependent factors and density-independent factors. The density-dependent factors include disease, a shortage of food, etc., and all these negatively affect the density of the population, while the density-independent factors are the heat wave, fire, and drought, which do not depend upon the population density.

Hence, the following is a density-dependent limiting factor: the disease that is in Option a.

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I hope this helps!!!!

Answer:

They all Decrease

Explanation:

I just took the test

When glycolysis stops working ;  Pyruvate , NADH and intermembrane H+ will decrease .

Glycolysis is the step ( catalyzed metabolic linear process ) in a cellular respiration whereby glucose is converted to molecules ( 2 ) of pyruvate in the presence of oxygen or into lactate in the absence of oxygen.  

Since the production of pyruvate, NADH and H+ is dependent on the process of glycolysis when glycolysis is stopped the amount of Pyruvate, NADH and H+ will be reduced / decreased.

Hence we can conclude that when glycolysis stops working Pyruvate, NADH and intermembrane H+ will decrease.

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Perceptual processing occurs in the context of multiple inputs. Yes, the processing of unimodal information can be very useful.

Unimodal information nonetheless offers significant sensory information that can be essential for survival and daily functioning, despite the fact that the enormous network of multisensory regions and neurons in the cortex suggests that much perceptual processing happens in the context of many inputs. Processing unimodal information, such as visual signals, might assist in spotting and averting possible hazards in our environment.

Similarly, interpreting auditory signals can aid in navigating our surroundings and interacting with others. Additionally, unimodal information might be helpful for specialised tasks like identifying and distinguishing between similar items in a visual display, identifying particular noises or voices in a loud environment, or detecting minute changes in temperature or pressure.

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Answer:

a cell is the smallest unit of a living thing

Explanation:

cells are the building blocks of all organisms

Answer:

a

Explanation:

the data given shows the answer

Compartmentalization provides evolutionary advantages by allowing for greater specialization, efficiency, and regulation within biological organisms.

Compartmentalization is the process of dividing a larger space or structure into smaller, distinct compartments or sections. This process is commonly found in biological organisms and plays an important role in their evolution. The primary advantage of compartmentalization is that it allows for greater efficiency and specialization within a larger structure.

In biological organisms, compartmentalization can be seen in the form of different organs, tissues, and cells, each with their own specific functions. For example, the human body has a digestive system, a respiratory system, and a cardiovascular system, each of which has specialized organs and tissues that work together to perform their specific tasks.

Compartmentalization also allows for greater control and regulation of different processes within an organism. For example, the nucleus of a cell is separated from the rest of the cell by a membrane, which helps to protect the genetic material and regulate its functions.

By dividing larger structures into smaller, distinct compartments, organisms are able to adapt and evolve to their environments more effectively.

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Up to 50% of the groundwater we use outside is lost to the elements including wind, evaporation, and runoff brought on by ineffective irrigation techniques, businesses, and infrastructure.

A liquid transforms into a gas during evaporation. It is simple to picture when puddles of rain "vanish" on a hot day and when wet clothing dries in the sun. In these instances, the sea phase is draining into a gas known as water vapor rather than really dissipating. Global evaporation takes place.

Wind panels, or heat from the sun, is what causes the evaporation process to occur. It takes on moisture from garden soil as well as the biggest lakes and oceans. As the water is uncovered to the sun's heat, its level will drop.

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Answer:

ecosystem engineers

Explanation:

because they changed the desert from mostly grasses to mostly mosquito shrubs over the last 150 years

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