The correct answer is C) 70/x.
To calculate doubling time, rule of 70 formula is used. For this the annual growth rate of the population is required. In this question growth rate is given x. Thus, doubling time = 70/ growth rate.
Therefore, doubling time = 70/x.
Answer:
Option C
Explanation:
Rate of increase in a population is generally written as net population increase in a unit time.
Here "X" represents the growth rate of population of wolves.
Let us assume that X is equal to [tex]23[/tex] wolves per month.
This means that 23 wolves are added every month to the wolves population.
Suppose if we have to derive the time in which the wolves population will increase to any number let us say "Y"
Then , time required will be equal to
[tex]\frac{Y}{X}[/tex]
That means X will be denominator in a mathematical expression.
Thus, option C is correct
How do plants store energy from photosynthesis?
Photosynthesis is the process plants and some algae use to convert light energy to chemical energy stored as sugar within chloroplasts -- the energy factories found in plant cells. Plants need only carbon dioxide and water for photosynthesis to work.
Answer:
The correct answer is "in the form of starch".
Explanation:
Plants store energy from photosynthesis in the form of starch. Starch is a polysaccharide, made from several units of glucose linked together following a particular disposition. The glucose that is produced during photosynthesis is used to synthesize starch, biomolecule that is used as a form to store energy.
which item below does not contain lipids a.beeswax b.cellular membranes c.cooking oil d.table sugar
b.cellular membranes is the answer
which of the following is the most likely cause for succesion in ecosystems?
A. arrival of new species
B. Rain
C. loss of an animal species
D. wildfires
Hello.
The answer: D. wildfires
For succesion in ecosystems nothing remains the same or constaly changing. New specis, Rain and loss of animals can change an everment but only a Wildfire can change a ecosystem where nothing is left the same. So therefore the answer is Wildfires.
Have a nice day.
Hello.
The answer: D. wildfires
For succesion in ecosystems nothing remains the same or constaly changing. New specis, Rain and loss of animals can change an everment but only a Wildfire can change a ecosystem where nothing is left the same. So therefore the answer is Wildfires.
Have a nice day.
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The Moon orbits the Earth once in about _______. A. 365 days B. 28 days C. 24 hours D. 7 days
b. 28 days
hope this helps
Answer: Option B. 28 days
Explanation:
The moon orbits the Earth in about 28 days.
Moon also takes 28 days to rotate once on its own, that is why it seems still in it's position.
The moon rotates around the Earth in an elliptical orbit. The moon rotates in slower rate when it is closest to earth and rotates in faster rate when far from earth. The side of moon facing earth surface is called the near side. During new moon phase, when the moon comes between the Earth and the sun, the back side of the moon gets hide by daylight.
The moon changes its shape during rotation of earth as per the lunar theory. It involves several phases in the given sequence First Quarter following Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, Waning Crescent, New Moon and Waxing Crescent and repeats.
Hence, the correct option is B. 28 days.
Does arborist care for forests?
An arborist is a specialist in the care of individual trees. Arborists are knowledgeable about the needs of trees and are trained and equipped to provide proper care. does that help?
An arborist is someone who trims/ takes care of trees. Say you get a job at a tree company and you get called to trim or cut down a tree, you are an aborist. Because you trim trees doesn't necessarily mean you take care of forests. I would say no Aborists do not take care of forests.
hope this helps:)
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What would happen to a sample of your red blood cells if they were placed in a hypotonic solution?
Hypotonic solutions contain a low concentration of solute relative to another solution ( The cells cytoplsm)
Thus, when a cell in placed in a hypotonic solution, the water diffuses into the cell, which causes the cell to swell up.
The cell has lower solute concentration than the solution. So the solution is HYPERTONIC and the cell is HYPOTONIC.
As a result, a cell that does not have a rigid cell wall, such as a red blood cell, t'will most definitely swell and burst when placed in a hypotonic solution.
Final answer:
Red blood cells placed in a hypotonic solution will swell due to water rushing in, potentially causing hemolysis (bursting). In hypertonic solutions, they will shrink due to water loss.
Explanation:
When red blood cells are placed in a hypotonic solution, the concentration of solutes in the surrounding fluid is lower than those inside the cells. As a result, water rushes into the cells due to osmotic pressure. This influx of water causes the red blood cells to swell, potentially leading to hemolysis, which is the bursting of the cells due to excessive swelling. Conversely, if red blood cells are in a hypertonic solution, they lose water and shrink, which is known as crenation. Red blood cells function optimally in an isotonic environment, where the flow of water in and out of the cell occurs at equal rates, maintaining the normal shape of the cells.
how does precipitation assist in the rock cycle
I believe this will help When water freezes in cracks and crevices in rock and expands, the rocks are physically broken apart. The amount of rainfall will affect weathering as will the types of plants in the area (which are greatly affected by the amount of rainfall), whose roots break rocks apart and may chemically dissolve some rocks.
Calcium is an essential nutrient for all ages, but many marketing campaigns for high-calcium foods focus on childhood. Do you think there’s merit to telling children to get their calcium because it builds strong bones? Explain your response.
Answer:
Yes
Explanation:
, there’s merit to targeting children in marketing campaigns for high-calcium food. People reach peak bone mass at about age 30. If children don’t consume enough calcium, they may not build up enough bone density, which could cause them to be at risk for osteoporosis when they’re older.
There is a lot of merit in telling children to get their calcium in building strong bones because the increase in bone density by calcium stops between 25-30 years.
It is therefore for the children to take enough of calcium to make their bones
very dense and strong as attaining the age of 30 years means there will be
no change in the bone density regardless of the amount of calcium taken.
Intake of calcium at an early age also helps us plan for old age . At the age of
50 years and above , individual experiences bone loss which leads to
osteoathritis and other bone related diseases.
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The human body works to keep blood within a certain pH range an example of
Homeostasis, aka your body maintaining life and the right amounts of stuff.
Answer:
pH range.
Explanation:
The human body works to keep blood within a certain pH range.
After Pangaea broke up, South America was part of
Rodinia
Panthalassa
Laurasia
Gondwana
South America was part of Gonwana, after Pangea broke in two
Eukaryotic cells have organelles within each cell that are bound by their own lipid bi layer membrane ( t or f)
The answer is true; eukaryotic cells contain organelles that are each surrounded by their own lipid bilayer membranes, which include the nucleus, vacuoles, endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria.
The correct answer to this question is true. Eukaryotic cells are indeed structured with a number of organelles, each bound by a lipid bilayer membrane much like the cell's outer membrane. Key examples of these membrane-bound compartments include the nucleus, which contains the cell's genetic material, and vacuoles, which are storage organelles. Notable among other such organelles are the endoplasmic reticulum, Golgi apparatus, chloroplasts (in plant cells), and mitochondria. Each of these organelles has highly specialized functions; for example, mitochondria are known as the powerhouses of the cell because they produce energy through respiration. These organelles are often referred to as the 'little organs' of the cell, highlighting their specialized roles comparable to the organs in our bodies.
How do peppered moths after the industrial revolution show the process of natural selection apex?
A.) black moths were selected for when the trees turned black.
B.) black moths were selected for when trees were white or black.
C.) white moths were selected for when the trees were white or black.
D.) white moths were selected for when the trees turned black.
Black moths were selected for when trees darkened due to pollution from the Industrial Revolution, exemplifying directional selection. So the correct option is A.
Explanation:The peppered moths after the Industrial Revolution are an iconic example of directional selection in nature. Before the revolution, light-colored moths were camouflaged against light-colored trees, making it difficult for predators to see them. However, the Industrial Revolution caused significant pollution, leading to soot covering the trees and making them darker. Because of this environmental change, the previously rare dark-colored moths became better camouflaged. As a result, black moths were selected as their chances of survival increased in these polluted environments, leading to an increase in their population. Therefore, the correct answer to the question would be A.) black moths were selected for when the trees turned black.
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How is a scientific law different from a scientific theory?
A) A theory becomes a law after a long period of time has passed
B) A theory is used for biology and chemistry and a law is used for physics
C) A theory is why something happens and a law is how something happens
D) A theory cannot be disproved but a law can be disproved
Your answer is option c.
We know a theory is not just for biology and chemistry since we have the theory of relativity
We also know that both theories and laws can be disproved or changed.
And a theory does not become a law after a long time period
thus the answer is C
Answer:
The correct answer will be option-C.
Explanation:
Scientific theories and scientific laws are proposed after many hypothesis related to the natural phenomenon is supported by experiments of many researchers.
Both scientific laws and scientific theory are the statements formed on the basis of the results but they differ as a scientific law represents the mechanism of how natural phenomenon is as it provides the data related to the natural event which hold true everywhere whereas a scientific theory provides the explanation of the causes of a natural event.
Thus, option-c is the correct answer.
bones function as levers for the muscles to provide movement of the body What refers to reducing the angle of the joint thus bringing two bones closer together
The answer is D: Flexion.
Flexors muscles of the cause’s flexion, which reduces the angle of the joint and reduces the dis-tance between two bones. In this process, the muscle contracts and this brings the bones attached to the muscle close to each other due to the movement of the nearby joint. For example when flexion occurs at the elbow, the bones “Ulna” and “ Humerus” get close to each other .
How would the global climate be different if more of Earth was covered by land than water? A) The climate would be more extreme than it is today. B) There would be no winds in the Northern Hemisphere. C) The climate would be more moderate than it is today. D) There would be no rainfall in the Northern Hemisphere.
The answer is option A. The climate would be more extreme than it is today.
The global climate is different if more of Earth was land than water, as the climate would be more extreme than it is today. The correct option is A.
What is climate?Climate is the different weather patterns that are long-term. The climatic changes happen due to changes in the activities of organisms.
The climate is already warming so much, that if there will be no water, the climate would be unfavorable to live in.
Thus, the correct option is A) The climate would be more extreme than it is today.
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A woman with hemophilia and a man without hemophilia are expecting a baby boy. What are the chances that their son will also have hemophilia?
100%, 75%, 25 or 50
pretty sure its 100%
Answer:
Your correct answer is no doubt 100%
Explanation:
during which phase of mitosis do the chromosomes become visible with a microscope?
A. crotokinesid
B. prophase
C. Anaphase
D. Telphase
Prophase,
Prior to that, the chromosomes were long strands of DNA material called 'chromatin'. During Prophase, the chromatin curls up into tightly wound shapes called chromosomes.
During the Prophase phase of Mitosis, the chromosomes condense and become visible under a microscope.
Explanation:The phase of mitosis during which the chromosomes become visible when viewed under a microscope is the Prophase. Mitosis is the process of cell division. It has several phases: Interphase, Prophase, Metaphase, Anaphase, and Telophase. In Prophase, the chromosomes condense and become visible under a microscope. They appear as two identical sister chromatids joined in the center by a structure called a centromere.
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Which stage of the cell cycle involves the division of the cell’s nucleus?
Metaphase
At the end of the phase the cell divides into two new cells
The division of the cell's nucleus occurs during the mitotic phase of the cell cycle, specifically in the process known as mitosis, which is followed by cytokinesis resulting in two daughter cells.
The stage of the cell cycle that involves the division of the cell's nucleus is called the mitotic phase, which is more specifically known as mitosis. The cell cycle is primarily divided into two major phases: interphase and the mitotic phase. During interphase, the cell undergoes growth and DNA replication. This phase allows the cell to prepare for division, leading up to the mitotic phase. Mitosis then follows interphase and is the process by which the replicated chromosomes are segregated and distributed into two daughter nuclei. The mitotic phase can be further divided into several steps including prometaphase, metaphase, anaphase, and telophase. After mitosis, the cell typically goes through cytokinesis, a process dividing the cytoplasm, resulting in two daughter cells.
During meiosis, homologous chromosomes exchange genetic material. This exchange of genetic material
The answer is; crossing over/synapsis
This occurs when the arms of homologous non-sister chromosome pairs connect at points called chiasma. They exchange genetic material causing recombination. This mostly occurs in the later stages of prophase I into metaphase I of meiosis. Flaws in crossing over can cause genetic diseases in offspring.
During meiosis, homologous chromosomes undergo an exchange of genetic material, known as recombination or crossover. This process contributes to genetic variation as maternal and paternal alleles are combined onto the same chromosome. Errors in meiosis can result in genetic disorders like Down syndrome.
Explanation:During the process of meiosis, homologous chromosomes undergo an exchange of genetic material, a process known as recombination or crossover. Starting in meiosis I, homologous chromosomes pair up and exchange non-sister chromatid segments, which leads to a unique genetic composition. This exchange significantly contributes to the diversity of genetic combinations in the resulting haploid gamete cells.
As the chromosomes align, particular segments of genetic material are exchanged, while the gene order remains unchanged. The result of this recombination is that maternal and paternal alleles combine on the same chromosome, causing extensive shuffling of alleles. These crossover events serve as an essential source of genetic variation.
If there are errors in meiosis, such as incorrect chromosome segregation, genetic disorders like Down syndrome can occur. These crossover events are fundamental in producing genetic variation, leading to a diverse gene pool and enhanced adaptability for species.
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Who found that plants are composed of cells
Robert Hooke discovered cell structure and named cell
Answer:
Robert Hooke
Explanation:
1.
Which process uses the products of photosynthesis as reactants?
DNA replication
protein synthesis
active transport
cellular respiration
2.
The diagram shows an energy transformation that typically occurs in plant cell plastids.
Which statement best describes this role of plastids in the plant cell?
Chloroplasts transform chemical energy into electromagnetic energy.
Chloroplasts transform light energy into chemical energy.
Mitochondria transform chemical energy into electromagnetic energy.
Mitochondria transform light energy into chemical energy.
3.
Cellulose is a carbohydrate and a polymer of glucose. Which statement best describes how
cellulose is formed within living organisms?
It is the result of a physical change that alters the shape of a compound.
It is the product of the decomposition of a much larger molecule.
It is constructed by connecting smaller monomer subunits.
It is assembled by bonding individual atoms.
4.
Which statement best describes a relationship between mitochondria and chloroplasts?
Chloroplasts release chemical energy from molecules and store it in mitochondria.
Chloroplasts convert light energy into chemical energy that can be used by mitochondria.
Mitochondria convert chemical energy into light energy that can be used by chloroplasts.
Mitochondria release chemical energy from molecules and store it in chloroplasts.
5.
A jackrabbit has large ears containing blood vessels that help it maintain a constant
body temperature by adjusting heat exchange with the surrounding environment.
Which characteristic of life is best described by this example?
homeostasis
growth
organization
energy use
6.
Which two statements correctly describe one similarity and one difference between
cellular respiration and photosynthesis?
statements 2 and 3
statements 3 and 4
statements 1 and 4
statements 1 and 2
7.
Plant cells use sunlight to make their own food. Which structure allows plant cells to perform
this function?
nucleus
mitochondrion
vacuole
chloroplast
8.
The indicated protein is part of a cell membrane. What is the most likely purpose
of this protein?
It attracts unbalanced electrical charges in the cell’s environment.
It releases stored chemical energy in membrane carbohydrates.
It allows passage of particles into and out of the cell.
It manufactures phospholipids to repair membrane damage.
9.
Which graph best shows how enzyme activity changes as the temperature is adjusted above
and below the enzyme’s optimum temperature?
10.
Which statement best describes how active transport differs from passive transport?
Only active transport allows substances to leave a cell.
Only active transport requires ATP.
Only active transport moves small particles.
Only active transport relies on a plasma membrane.
1. Cellular respiration: Photosynthesis produces glucose and oxygen, which are both reactants in cellular respiration for generating energy in cells.
2. Chloroplasts transform light energy into chemical energy: Plant cell plastids, specifically chloroplasts, capture sunlight's energy and convert it into chemical energy (glucose) used by the plant.
3. It is constructed by connecting smaller monomer subunits: Cellulose, a glucose polymer, is formed within living organisms by linking individual glucose molecules (monomers) together.
4. Chloroplasts convert light energy into chemical energy that can be used by mitochondria: Chloroplasts produce energy (glucose) used in mitochondria for cellular respiration, showcasing their complementary roles.
5. Homeostasis: The jackrabbit's ability to regulate body temperature through ear adjustments exhibits homeostasis, a key characteristic of life.
6. Statements 1 and 2: Both processes use organic molecules as reactants (similarity), but cellular respiration releases energy while photosynthesis stores it (difference).
7. Chloroplast: Plant cells utilize chloroplasts, specialized organelles containing chlorophyll, to capture sunlight and perform photosynthesis.
8. It allows passage of particles into and out of the cell: The membrane protein likely facilitates controlled movement of substances across the cell boundary, a crucial function.
9. Graph 3: Enzyme activity peaks at an optimal temperature and declines sharply above and below, as shown in Graph 3.
10. Only active transport requires ATP: Unlike passive transport, which utilizes concentration gradients, active transport actively pumps molecules against gradients, requiring energy (ATP).
Image Solve
Photosynthesis and cellular respiration are two complementary processes that provide energy for living organisms. Photosynthesis captures energy from sunlight and stores it in glucose, while cellular respiration releases that energy to power the cell's functions. Understanding these processes is essential for appreciating the interconnectedness of life on Earth.
Photosynthesis and Cellular Respiration:
Photosynthesis and cellular respiration are two essential processes that work together to sustain life on Earth. Photosynthesis is the process by which plants and other organisms use sunlight, water, and carbon dioxide to produce glucose, a sugar molecule that stores energy. Cellular respiration is the process by which cells break down glucose to release energy that they can use to power their functions.
Vocabulary Matching:
ATP (1): The molecule that cells use to store and transfer energy.
Cellular respiration (2): The process by which cells break down glucose to release energy.
Photosynthesis (3): The process by which plants and other organisms use sunlight, water, and carbon dioxide to produce glucose.
Glucose (4): A sugar molecule that stores energy.
Energy (5): The ability to do work.
Chloroplast (6): The cell organelle where photosynthesis takes place.
Mitochondria (7): The cell organelle where cellular respiration takes place.
Catabolic process (8): A process that breaks down molecules into smaller units and releases energy.
Anabolic process (9): A process that constructs molecules from smaller units.
Chlorophyll (10): The green pigment in plants that absorbs sunlight for photosynthesis.
True or False:
1. All life needs energy. (True)
2. Glucose is a carbohydrate that stores chemical energy. (True)
3. Only heterotrophs can perform photosynthesis. (False) Autotrophs, like plants, can perform photosynthesis.
4. The products of photosynthesis are the reactants of cellular respiration. (True) Photosynthesis produces glucose and oxygen, which are used in cellular respiration.
5. Glucose is the energy carrying molecule that cells use for energy. (True)
6. Photosynthesis uses the energy in sunlight to make ATP. (False) Photosynthesis produces glucose, which is then used in cellular respiration to make ATP.
7. One molecule of ATP contains more energy than one molecule of glucose. (False) A molecule of glucose contains more energy than a molecule of ATP.
8. The process in which glucose is broken down and ATP is made is called cellular respiration. (True)
Which of the following occurrences affects the Earth's water systems?
A.
melting glaciers
B.
extreme drought
C.
increased rainfall
D.
all of these
D is the correct answer
All of these can affect the earth' s water systems.
What is water system?Infrastructure for collecting, transferring, treating, storing, and distributing water for use in households, businesses, industries, irrigation, and other public purposes like firefighting and street flushing.
The provision of drinkable water is arguably the most important municipal service. For drinking, cooking, cleaning, getting rid of waste, and other home necessities, people rely on water. Systems for supplying water must also meet standards for industrial, commercial, and public uses.
The site of the earliest inhabited villages was influenced by water, and the development of public water delivery systems is closely related to the expansion of cities.
Therefore, All of these can affect the earth' s water systems.
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40 To test acidity levels of water, scientists test the pH. As acid rain falls, the pH levels in lakes and streams decrease. While certain animals can tolerate low pH levels, others are extremely sensitive to the effects of acid rain and cannot live under the conditions. Students in Maria's class know, based on the chart, the pH range tolerated by specific organisms living in the ponds surrounding their school Maria and several other students are anxious to design an experiment to investigate this topic.
What is the question, sorry if I misunderstood
which group of organic compounds stores genetic information?
The group of organic compounds that store genetic information are nucleic acids.
NUCLEIC ACIDS:
Nucleic acids are one of the four biological molecules in nature. Nucleic acids are molecules that help store and transmit genetic information in living cells. The two types of nucleic acids are DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). DNA helps store genetic information in the cells of living organisms, which is transcribed and translated into proteins. Therefore, the group of organic compounds that store genetic information are nucleic acids.Learn more at: https://brainly.com/question/18375173?referrer=searchResults
Which are the three main types of lipids
The three main types of lipids are:Triglycerides, Phospholipids, Steroids.
Triglycerides, also known as triacylglycerols or fats, are the most common type of lipids found in both plants and animals. They are composed of glycerol and three fatty acid chains. Triglycerides are the primary form in which energy is stored in the body. They serve as a concentrated source of energy and are stored in adipose tissue (fat cells) for future energy needs.
Phospholipids are a crucial component of cell membranes. Like triglycerides, they consist of glycerol, but instead of three fatty acid chains, there are two fatty acids and a phosphate group attached to the third position. The phosphate group makes one end of the phospholipid molecule polar (hydrophilic), while the fatty acid chains are nonpolar (hydrophobic). This unique structure allows phospholipids to form a phospholipid bilayer in cell membranes, providing a selective barrier for the cell.
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The three main types of lipids are triglycerides, used for energy storage; phospholipids, which form cell membranes; and steroids, like cholesterol, involved in membrane fluidity and hormone production.
Explanation:The three main types of lipids are triglycerides, phospholipids, and steroids.
Triglycerides are composed of a glycerol molecule joined to three fatty acid chains. They serve as a major form of energy storage in both animals and plants.Phospholipids are made up of two fatty acid chains, a phosphate group, and a glycerol or sphingosine backbone. They are key components of the cell membrane, providing both a barrier and a matrix for other cell components.Steroids are a class of lipids characterized by a structure of four fused carbon rings. Cholesterol is a well-known steroid that plays a critical role in maintaining cell membrane fluidity and serves as a precursor for steroid hormones like testosterone.Lipids play numerous roles in biological systems, including energy storage, cellular structure, and hormone synthesis. They are generally hydrophobic and nonpolar, making them insoluble in water.
How is a plateau different from a fault-block mountain?
Answer:
A plateau is defined as a highland area that has a flat top topography, which has steep sides. These are often formed when the intrusive magma crystallizes before it comes out to the surface. The flat top surface of the plateaus are formed due to the continuous erosion process that has taken place since the geological time.
On the other hand, a fault-block mountain is a type of mountain which are formed due to the reverse faulting. It results from the upward movement of the blocks. These are jagged mountains and are formed from the compressional stress.
Thus, the plateaus are formed from the erosion process, and fault-block mountains are formed due to the compressional stress.
Which of the following is a FALSE statement about reactions?
A. Mass can’t be created or destroyed in a chemical reaction
B. Compounds that form have different properties than the ‘old’ reactants.
C. Atoms are rearranged in a reaction and joincto form new molecules
D. When a reaction gets cold, that means energy is destroyed
D is absolutely false. Energy cannot be destroyed. It can only be transferred.
The density of an object with a mass of 27 g and a volume of 9 cm3 is?
the density is 3 gram cubic meter
HOPE THIS HELPS
The density of an object with a mass of 27 g and a volume of 9 cm3 is 3 g/cm3.
Explanation:
The density of an object can be calculated by dividing its mass by its volume. In this case, the mass is given as 27 g and the volume as 9 cm3. To find the density, we divide 27 g by 9 cm3 which gives us a density of 3 g/cm3.
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what is the identity the genotypes of the aunt and her fiancé?
Genotypes are what is in people's genes not what you can see on the outside.
Vaccines can help protect against viruses by triggering the production of
Answer:
The correct answer is - antibodies.
Explanation:
Vaccines are the biological substance or the preparation that helps in building the active acquired immunity from a particular disease. Vaccines are basically weakened or dead infectious agents or particles that induce or active the B cells to produce antibodies and memory cells.
These antibodies are formed by the vaccines by triggering the production of B cells. This process of injecting vaccines is known as vaccination.
Thus, the correct answer is - antibodies.