Answer:
Around 70% of our immune system dwells in our digestive tract in the form of gut-associated lymphoid tissue (GALT). An important component of our immune system called plasma cells (which give rise to invader-defending antibodies) also reside within the GALT. Our gut is the major channel between the external environment and the internal systems of our body. It is exposed to plenty of germs and harmful invaders such as bacteria and viruses present in food particles on a daily basis. [1] These toxic agents are perceived by the immune system in the gut as being harmful to our body and attacked. That being said, our body does not reject everything we put into it. This process is known as tolerance. When our immune system rejects an otherwise harmless substance, we are labeled as being sensitive or allergic to that food/food ingredient.
Explanation:
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Why do objects eventually fall to the ground?
Answer:
Gravity?
Explanation:
Gravity is a force that causes anything with matter to fall to the ground.
NEED HELP ASAP !!!!!!!!!!!!!!
Which of the following best describes why cells do not indefinitely continue to increase in size?
a. Cells do not have enough DNA to allow them to grow very large.
b. Cells have only enough resources to grow to a certain size and then they have to stop growing.
c. As cells become larger, their surface area-to-volume ratio decreases and they are no longer able to function properly or efficiently.
d. The size of the cell is directly related to the size of the organism, so smaller organisms have smaller cells and larger organisms have larger cells
The best described for the reason why there is no increase in size. c. Since cells become larger, their surface-area-to-volume ratio decreases and they are no longer able to function properly or efficiently.
Description of the cell for not increasing the size.In terms of biology, the smallest unit that could live on its own and that makes up all living organisms and the tissues of the body are known as cells. When the cells should be larger so there is the area to the volume ratio should be reduced. Due to this, the function or efficiency should not be done. Also, it has sufficient DNA to permit them.
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Is the fossil record complete for humans? Explain your answer.
Outline THREE adaptations of terrestrial plants for their survival in their habitat.
Answer:
Stomata for gas exchange, water resistant waxy cuticles on leaves and specialized cells for support.
Explanation:
Plants have undergone several modifications for life on land. These include the development of several mechanisms:
a waxy, thick water-repellent cuticle- the thick cuticle provides a barrier to water loss from plant tissues in the leaf. stomata- these moderate the evaporation of water, an important commodity to land dwelling terrestrial organisms. They also regulate gas change cells to provide strength and rigidity- plant cells are specialized cells that contain lignin and cellulose, these are rigid provide good support against gravitational forces, Without them the stem would break and the cells would readily lose waterwhat are the most common types of organisms in the ecosystem.
Answer:
producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants.
Explanation:
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River deltas are?
1, caused by the movement of tectonic plates.
2, areas of infertile, rock soil.
3, formed by erosion.
4, created by seafloor spreading.
Answer:
2
Explanation:
I think that the answer is 2 because river deltas are formed when sediments are moved somewhere else in order to make the delta. So is there are areas of infertile rock soil it could be easily moved to make a delta
Imagine a deer that lives in a meadow. When the deer dies what happens to its remains?
Answer:
Hope it may help youExplanation:
In New Jersey, most dead deer and other roadkill are taken to landfills. In New York, animals are sometimes buried as part of a composting process that allows the animal to decompose underneath wood chips. Within three months, all that remains is compost.
The burrows of these early crustaceans that once lived during the Jurassic Period are examples of ______ fossils?
A.concrete
B.index
C.trace
D.trail
Answer:
C. Trace
Explanation:
Generally, fossils are the mineralized or preserved remains of a previously existing organism. Fossils, which show how long an organism has been in existence, can include but not limited to bones, DNA, shells, footprints etc. However, fossils can either be the actual organism's remains or a recorded impact of the organism called TRACE FOSSILS.
Trace fossils are those fossilized impacts such as burrows, footprints that suggests the presence of the organisms that created or formed them. Hence, in this case, the BURROWS of early crustaceans that once lived during the Jurassic Period are examples of TRACE FOSSILS.
Match each term with its best definition
match magma chamber with cavity where magma resides
match divergent plat boundary with areas where tectonic plates pull apart
match convergent plate boundary with places where tectonic plates smash together
match stoping with blocks of rocks falling in to magma
match injection with magma forced in to fractures
What might happen in this ecosystem if the fox was removed?
Answer:
The numbers of rat will increase & fox eaters will decrease in ecosystem
If the fox was removed from the ecosystem, the number of primary consumers i.e, herbivore may increase drastically that will cause heavy loss to vegetation.
What is the importance of foxes?Foxes being the most widely distributed canine on diverse habitats of earth. Regardless of significant member of secondary consumers, foxes are important indicators of food web stability and hospitable terrain wherever they live.
Red foxes help to hold control on rodent and rabbit populations, which causes heavy loss to vegetation if present in greater number.
Foxes also may assist in seed dispersal by eating fruits and their fur adhere seed to be carried where they navigate.
Thus, if the foxes are removed from the ecosystem, it will negatively impact the ecosystem by imbalancing the food web.
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Explain two ways materials can enter the cell through passive transport. Include in your answer: the types of substance that is transported, the concentration gradient, and any structures in the cell membrane required to be used.
Answer:
There are two types of passive transport, you have diffusion and facilitated diffusion. Another one could be osmosis which is diffusion of water molecules.
Explanation:
Diffusion is solute passing through the membrane from a higher concentration to a lower concentration until it reaches equalibrium. Osmosis is the same as diffusion only it passes water molecules and it uses aquaporins which is a structure in the membrane to help the water pass. Finally you have facilitated diffusion that uses protiens for diffusions but still not using energy and that is why it is passive transport. The type of substance that can be transported are molecules with no charge or non-polar molecules. Lmk if this helps. Sorry in advance if the answer is not clear to understand.
the three characteristics of physical change
Answer:
1.Changes of strength
2.Changes to durability
3.Transition to a gas
Answer:
A physical change is always reversible.
A physical change only affects the physical properties of the substance like volume and size as well as its state (solid, liquid, gas).
A physical change does not change the chemical composition of the substance like the number of atoms and protons in a molecule or element.
Explanation:
I'm not very sure but I will try.
E.g. An ice melting does not change the chemical composition of the water, but it only changes its ability to take the shape of its beholder (the cup). To reverse it, simply lowering the temperature allows the water to turn back into ice.
An old home is abandoned and the lawn is no longer cut. Eventually, small shrubs overgrow, then trees take over what was once a lawn. Eventually, a forest surrounds the no longer visible home. What type of succession is this describing?
Answer:
Explanation
A climax community (Figure below) is the end result of ecological succession. The climax community is a stable balance of all organisms in an ecosystem and will remain stable unless a disaster strikes. After the disaster, succession will start all over again.
50 POINTS!!! Blood is a unique type of connective tissue that we haven't been able to synthetically create yet. For that reason donating blood is so essential to maintain the health of our population. If you are type O- blood, explain (in your words) the benefits and risks of being O-. Also, explain the differences between O+ and O- blood types.
Answer:
Difference between O positive and O negative
For example, a person with O+ blood does not have A or B antigens on the surface of the cells but does have Rh factor. In contrast, O- blood has no A or B antigens and no Rh factor. For this reason, medical experts consider type O- blood to be a universal red cell donor type
Explanation:
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What is the result of homeostasis at the cellular level? *
A The cell dies.
B The environment within the cell is stable.
C The cell no longer obtains energy
D The cell divides.
B - The environment within the cell is stable.
Homeostasis is when your body works to maintain equilibrium (balance) so within a cell, the cell would be stable
Answer:
I think its B
Explanation:
Homeostasis is the act of maintaining everything so its the same, like body temp.
Oak trees have the ability to make their own food. Their cells contain structures
that capture energy from the sun. What are these structures? *
Answer:
chloroplasts
Explanation:
It is found in cellular structures in certain plant cells. These are usually found in the leaves of plants. It is the chlorophyll in the leaves of plants that gives them their green color.
The food that is plants are able to produce own food. The plants are able to synthesize the food through the process of the photosynthesis and are synthesized in the chloroplasts.
What is the end product of the photosynthesis ?It is the glucose that is prepared by the plants in the metabolism.
Chloroplasts are the organelles which are there within the cells of plants and the algae that is site of the photosynthesis which is process through the energy from sun is changed into the chemical energy for the growth. Chloroplasts are responsible for biosynthesis of the active compounds as amino acids , phytohormones , nucleotides , vitamins, lipids and secondary metabolites
A chloroplast is the organelle through the cells of plants and certain algae that is the site of photosynthesis, which is the process by which energy from the Sun is converted into chemical energy for growth.
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PLSS HELP!!
1. cellular respiration produces
A. cellulose
B. oxygen
C. ATP
D. glucose
2. to produce starch, glucose molecules bond together through
A. photosynthesis
B. cellular respiration
C. dehydration synthesis
D. nucleotides
3. by which process does yeast produce the carbon dioxide responsible for bread rising?
A. photosynthesis
B. glycolysis
C. cellular respiration
D. dehydration synthesis
4. what is a component of amino acid not contained in starch?
A. amino acids contain carbon
B. amino acids contain oxygen
C. amino acids contains hydrogen
D. amino acids contain nitrogen
5. which two processes provide the glucose and nitrogen used to form amino acids in plants?
A. photosynthesis and nitrate absorption
B. cellular respiration and the citric acid cycle
C. photosynthesis and dehydration synthesis
D. glycolysis and nitrate absorption
Answer:
1. ATP
Explanation:
Cellular respiration may be defined as the chemical process of breakdown of food in the cell with the liberation of energy in the form of ATP.
Photosynthesis is a chemical process through which green plants most photosynthetic algae synthesize their own food in the form of glucose. While nitrate absorption is the process through which nitrogen in the soil is significantly absorbed by the root of plants in form of nitrates.
Fermentation is initiated with the process of glycolysis, but it does not involve the upcoming two stages of aerobic cellular respiration such as the Krebs cycle and oxidative phosphorylation.
Therefore, each of the above questions is well described above.
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Name the three types of fronts. Be sure to include name, the type of air the front will bring, and the type of skies it will bring.
Answer:
3 types of front: cold front (cool air and cumulus clouds are replaced by stratus and stratocumulus clouds or clear skies) , warm front ( warm air and high clouds like cirrus), and stationary front(warm and cool air and stratus, nimbostratus, altostratus, and cirrostratus clouds.
Explanation:
Cold fronts form when a cooler air mass moves into an area of warmer air in the wake of a developing extratropical cyclone. The warmer air interacts with the cooler air mass along the boundary, and usually produces precipitation. Cold fronts often follow a warm front or squall line.
Warm front Forms when a moist, warm air mass slides up and over a cold air mass. As the warm air mass rises, it condenses into a broad area of clouds. A warm front brings gentle rain or light snow, followed by warmer, milder weather.
Stationary front Forms when warm and cold air meet and neither air mass has the force to move the other. They remain stationary, or “standing still.” Where the warm and cold air meet, clouds and fog form, and it may rain or snow.
What is dna replication?
Answer:
In DNA replication, cell machinery copies strands of DNA.
Explanation
DNAs, deoxyribonucleic acids, are long-chain, helical macromolecules made of specific sequences of covalently bonded monomers called nucleotides. These contain genetic information essential for growth, reproduction, and cell repair.
Nucleotide monomers are made up of, a 5-Carbon deoxyribose sugar, one nitrogenous base (adenine, guanine thymine, and cytosine) and a phosphate group.
Nucleotides, deriving their name from their nitrogenous bases, pair up to form base pairs. In base-pair formation, Adenine and Thymine form double bonds, while cytosine forms triple bonds with guanine...
DNA polymerase facilitates either DNA synthesis, by adding free nucleases to parent strands -these are first unwound and separated by helicases DNApolys synthesize DNA in 5'-3' direction; due to its restricted movement, there are only two modes of replication: continuous from the point of strand separation, the fork, and discontinuous from the fork. In continuous replication, DNApolymerase moves uninterrupted along the 3'-5 oriented template, adding nucleotides to the free hydroxyl group at its 3' end to produce the 5'-3' oriented leading strand. During the synthesis of the 3'-5' oriented lagging strand, DNApolymerase moves backwards along the template from the replication fork; DNA helicase separates the strands, and DNApoly's addition of nucleotides is periodically interrupted while forming discontinuous Okazaki fragments. Ligase enzymes assemble nucleotide strands of RNA and DNA -here, DNAligase assembles these fragments into continuous strands, producing two identical new helixes formed from a parent and newly replicated strand respectively.Discuss the variables in both formulas and how they affect water potential.
Ψ = Ψp + Ψs
Ψ = -iCRT
Answer:
what ur problem!!!!!!!!!!!!!
Explanation:
HELP PLEASE QUICKLY. :)
GIVE AN EXPLANATION.
Diffusion of potassium in all regions of the filter occurs during countercurrent flow because the generation of diffusion gradient between water and the blood.
Flow of potassiumIn counter current, the blood in the capillaries flowing in the opposite direction to the flow of water which creates a steep diffusion gradient which results in rapid transfer of potassium into the blood so we can conclude that diffusion occur in all regions of the filter due to countercurrent flow of both liquids.
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How is Earth’s core different from the crust?
Answer: The Earth’s core is in the center of the Earth, and the core is WAY HOTTER
Explanation:
Answer: It is about three times thicker under the continents than it is under the oceans, and the oceanic crust is made up of different materials and denser rock. The crust makes up less than 1% of Earth's volume. The Earth's core is at the true center of our planet. ... The Earth's crust and core are separated by the mantle.
Explanation: Have a blessed day!
A student is observing different structures of a seed plant during a lab activity. She has identified tiny structures that
look like powder.
Which structures did the student most likely identify?
O pollen, which contains the plant embryos
O pollen, which develops into sperm cells
Oxylem, which contains the plant embryos
O xylem, which develops into sperm cells
The structures that look like powder that the student identified when studying a.
Explanation:
Angiosperms is the name given to plants with seeds, whose characteristic is to reproduce with seeds, in addition to having flowers that have pollen grains
When plants are closer to sunlight photosynthesis occurs
Answer:
Yeahh
Explanation:
When plants is around the place where the sunlight falls then plants can make their food
At the end of the Calvin cycle, what molecules have the energy that originally came from light?
Answer:
The Calvin cycle has two parts. First carbon dioxide is ''fixed''. Then ATP and NADPH from the light reactions provide energy to combine the fixed carbons to make sugar.
Explanation:
At the end of the Calvin cycle, ATP and NADPH are the molecules have the energy that originally came from light.
Calvin cycle reactions are referred to as light independent reactions, because they can take place in the dark, provided the products of the light reactions (ATP and NADPH) are provided.
Cells do not store large amounts of ATP and NADPH, so the Calvin cycle depends on these molecules being contributed again by light reactions.
In these reactions (each one of them catalyzed by a specific enzyme), ATP and NADPH are used up, the two final products of the transformation of light energy into chemical binding energy by the chloroplast.
The Calvin cycle uses energy-rich products of light reactions (ATP and NADPH) to incorporate three CO2 molecules (one at a time) into a three-carbon sugar phosphate.
The carbon atoms fixed in the form of sugar in the Calvin cycle eventually become the carbons of all the organic molecules present in plants, animals and almost any form of life.
Therefore, we can conclude that at the end of the Calvin cycle, ATP and NADPH are the molecules have the energy that originally came from light.
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The diagram shows two parent cells with chromosomes
Answer:
B
Explanation:
theyre all different bcz of genetic variation
C) Explain why antibiotics can be used to treat bacterial infections, but not viral infections
Answer:
Antibiotics are strong medicines that treat bacterial infections. Antibiotics won't treat viral infections because they can't kill viruses.
Explanation:
You'll get better when the viral infection has run its course. Common illnesses caused by bacteria are urinary tract infections, strep throat, and some pneumonia.
Antibiotics are strong medicines that treat bacterial infections. Antibiotics won't treat viral infections because they can't kill viruses.
Explain how antibiotics can be used to treat bacterial infections?You'll get better when the viral infection has run its course. Common illnesses caused by bacteria are urinary tract infections, strep throat, and some pneumonia.
Thus, Antibiotics won't treat viral infections because they can't kill viruses.
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What are the three types of protists?
Answer:
Protists are typically divided into three categories, including animal-like protists, plant-like protists, and fungus-like protists. Protists vary in how they move, which can range from cilia, flagella, and pseudopodia.
What is an advantage of asexual
reproduction?
A. Creates genetic diversity.
B. Occurs quickly.
C. Produces a small number of offspring, D. Produces identical offspring.
Answer that is correct and with explanation gets brainliest!
Answer:
B
Explanation:
he population can increase rapidly when the conditions are favourable. only one parent is needed. it is more time and energy efficient as you don't need a mate. it is faster than sexual reproduction.
what is human inference?
Answer:
How humans draw conclusions.
Explanation: