Answer:radiocarbon dating
Explanation:
Radiocarbon dating is a method for determining the age of an object continuing organic materials by using the peppering for Radiocarbon ,a radio active isotope of carbon.
This method was originally done by beta counting device which counted the amount of beta radiation emitted by the C14 of the decaying substance
More recently the method called accelerated mass spectrometery has become the method of choice
Radiocarbon dating is a method used to date organic materials by measuring the amount of carbon-14 left after an organism's death. It requires calibration against other dating methods due to atmospheric variations of carbon-14 over time and can date samples up to about 58,000 to 62,000 years old.
Radiocarbon dating, also known as carbon-14 dating or 14C-dating, is an absolute dating technique that is used to determine the age of organic materials. The method is based on the decay of the radioactive isotope of carbon called carbon-14, which is absorbed by organisms during their lifespan. As living organisms take in carbon, including carbon-14, it becomes part of their tissue. When they die, they stop absorbing carbon, and the carbon-14 present starts to decay at a known rate, with a half-life of approximately 5730 years, meaning the amount of carbon-14 reduces to half its original amount during this period.
To date organic samples, scientists measure the amount of carbon-14 remaining. Because the production and concentration of carbon-14 in the atmosphere have varied over time, calibration against other reliable dating methods is often necessary. Techniques like dendrochronology (tree-ring dating) and analysis of ice cores help ensure the accuracy of radiocarbon dating results for materials up to about 58,000 to 62,000 years old, though some sources suggest it can be used for materials as old as approximately 70,000 years.
Radiocarbon dating is widely used in fields such as archaeology and geology but requires careful calibration and consideration of the sample's age and the historical levels of carbon-14 in the atmosphere.
By what process does oxygen move from the alveoli into the blood of the pulmonary capillaries?
Answer:
Diffusion
Explanation:
Diffusion is a simple process of molecules' movement, from their higher concentration to he area with their lower concentration. The process of oxygen movement from the alveoli into the blood of the pulmonary capillaries is called gas exchange and it is actually simple diffusion. Alveoli have huge surface area, thin cell walls and a lot of blood vessels around them. All of these are adaptations that facilitate gas exchange. There is a high oxygen gradient: oxygen concentration in the alveoli is much higher (inhaled air) than in the surrounding capillaries so oxygen moves down its gradient-from the alveoli to the blood.
All of the outer planets are much larger than the inner planets.
Answer:
True...
Explanation:
The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.
The inner planets are much smaller than the outer planets and because of this have relatively low gravity and were not able to attract large amounts of gas to their atmospheres
An organelle found in most eukaryotic cells described as "cellular power plants", because their primary function is to convert organic materials into energy in the form of ATP.
Answer:
The cell organelle that is been described in the question is the MITOCHONDRIA.
Explanation:
Mitochondria is a cell organelle that is found in almost all eukaryotic cells, this is because it performs very crucial functions that make energy available to eukaryotic organisms. The last stage of cellular respiration, which is electron transport chain reaction takes place inside the mitochondria and it leads to the generation of ATP, which is the energy currency of the cells. Mitochondrial is often refers to as the power house of cells because of its ability to carry out biochemical reactions that generate ATP. Without mitochondria, cells will not be able to generate energy.
Why did scholars and the general public alike refuse to accept Copernicus’s heliocentric model? HELPP
Answer:
Due to the fact that they had believed that the world was the center of the universe and refused to believe otherwise.
Although it was more of a biblical Catholic Church going against the model, the general public was mainly dictated by the Catholic Church. Since this was introduced in a religious period, it was opposed because it basically stated that the scripture was wrong. Scientists also were looked down upon at the moment as their findings would basically instigate that the Church’s teaching was incorrect.
What happens in a male's body when he enters puberty? The testes start releasing testosterone. The testes start releasing progesterone. The ovaries start releasing testosterone. The ovaries start releasing progesterone.
The testes start releasing testosterone, the first one.
The first choice, the testes start releasing testosterone
You have discovered a new species of flowering plant in the Amazon rainforest. You look at
it's root tissue under the microscope and observe that each cell has 14 chromosomes. How
many chromosomes would you expect to find in it's eggs or pollen?
A) 28
B) 7
C) 14
D)21
There would be 28 chromosomes
The root tissue under the microscope and observe that each cell has 14 chromosomes and we can expect 7 chromosomes in eggs or pollen.Option D)21 is correct.
What is chromosomes?A chromosome is devised of proteins and DNA organized into genes. A structure is found inside the nucleus of a cell. Each cell normally contains 23 pairs of chromosomes.Chromosomes are structures found in the center (nucleus) of cells that move long pieces of DNA.DNA is defined as the material that holds genes. It is the building block of the human body. Chromosomes contain proteins that help DNA exist in the proper form.Hence, Option D)21 is correct.The root tissue under the microscope and observe that each cell has 14 chromosomes and we can expect 7 chromosomes in eggs or pollen.
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Why do fungi and bacteria produce antibiotics
Use the drop-down menus to determine which structures of the endocrine system are described below.
BLANK connects the endocrine system to the nervous system
BLANK called the “master gland” of the endocrine system
BLANK secretes a hormone that regulates sleep cycles
BLANK regulates the development and differentiation of T lymphocytes
Answer:
✔ hypothalamus
connects the endocrine system to the nervous system
✔ pituitary gland
called the “master gland” of the endocrine system
✔ pineal gland
secretes a hormone that regulates sleep cycles
✔ thymus
regulates the development and differentiation of T lymphocytes
Explanation:
edge 2022
The endocrine system is made up of endocrine glands. The hypothalamus is the connection between the nervous and endocrine systems. The pituitary gland is the "master gland." The pineal gland secretes melatonin hormone that regulates sleep cycles, and the Thymus gland regulates T lymphocyte development and differentiation.
What is the endocrine gland?Endocrine glands are ductless glands that are responsible for release of hormones directly into the blood.
The endocrine structures have the following functions:
Hypothalamus is the connection between nervous system and the endocrine system.The Pituitary gland is the “master gland”. The pineal gland secretes a hormone called melatonin that regulates sleep cycles.Thymus regulates the development and responsible for differentiation of T lymphocytes.Thus, the option for blank A is hypothalamus, B is pituitary gland, C is pineal gland and D is thymus gland.
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Both a toothbrush and a car are examples of technology. Explain why both are considered technology.
Final answer:
A toothbrush and a car are considered technology because they are practical applications of scientific knowledge that impact daily life, whether through improved oral hygiene or transformed transportation.
Explanation:
Both a toothbrush and a car are examples of technology because they embody the application of scientific knowledge and engineering for practical purposes that enhance our daily lives. The toothbrush, which evolved from a simple twig used by ancient peoples to the high-tech electric versions today, showcases the refinement of design and effectiveness for maintaining oral hygiene. Cars, on the other hand, have revolutionized transportation, enabling faster movement and altering the social and physical landscape through the development of roads and urbanization.
Technology profoundly impacts our everyday life by introducing efficiencies and conveniences that were previously impossible. The electric toothbrush, for example, was invented in 1939 and became more popular in the 1990s, while the microwave oven, originating from World War II radar technology in 1946, has become a staple in heating and preparing food rapidly. These inventions and many others have transformed our routines and the very way society operates.
Use the following words and phrases to answer the questions below with the best possible answer. Some phrases will be used MORE than once.
Succession Primary Succession Secondary Succession
Soil Climax Community Pioneer Species
1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings begin to sprout. This is an example of:
2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow. This is an example of:
3. An old-growth forest has remained the same combination of hickories and oaks for 100 years. This is an example of a:
4. Small organisms, such as lichens, help break up bare rock into soil. A lichen is an example of a:
5. A pond slowly fills in as algae and other plants die and fall to the bottom. This is an example of:
6. A volcano erupts creating a new island. This is an example of:
7. The process of primary succession begins with the formation of _________. Over time the once empty rock surfaces will become populated with organic material.
8.______________ occurs when ecosystems change over time through the progressive replacement of species.
1. secondary succession
2. primary succession
3. climax community
4. pioneer species
5. secondary succession
6. succession
7. N/A
8. N/A
im doing this rn too lol, i only have a few i need help with 7. hopefully someone else has 7&8 but these are real answers 100% !
1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings begin to sprout is example secondary succession.
What is secondary succession?Secondary succession is defined as the which occurs when the severity of disturbance is deficient to remove all the existing vegetation and soil from a site.
2. Primary succession example a glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow.
Primary productivity is defined as the process through which organisms form their own food from inorganic sources. The majority of primary producers are microbial life and terrestrial plants, such as algae.
3. An old-growth forest has remained the same combination of hickories and oaks for 100 years. This is an example of a climax community. A climax community is defined as the final stage of succession, remaining relatively unaltered until destroyed by an event such as human or fire interference.
4.Small organisms, such as lichens, help break up bare rock into soil. A lichen is an example of a pioneer species. Pioneer species is the first biotic community that develops in bare/scanty area.
5. A pond slowly fills in as algae and other plants die and fall to the bottom. This is an example of secondary succession.
6. A volcano erupts creating a new island. This is an example of succession.
7. Primary succession begins with no soil. Lichens and mosses eventually develop and die, leaving behind some soil. This soil is used by small plants like grasses and some ferns to flourish.
8. Primary succession occurs when ecosystems change over time through the progressive replacement of species.
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Which of the following is TRUE of species interactions?A) They can act as agents of natural selection.B) The outcome of any species interactions is static through time.C) They do little to affect species distributions.D) They cannot affect species abundance.
Answer:
The answer is A they can act as agents of natural selection. Hope this helps.
If someone is blood type O, then their blood contains antibodies for which antigens?
A. A
B. Neither A nor B
C. B
D. Both A and B
Answer:
Blood type O person will have no antigens on the surface of RBC, but they do contain anti-A and anti-B antibodies in their plasma.
Explanation:
Since there are no antigens on the surface of RBC, they become universal donors. Blood grouping is generally based on two things one is the presence of antigens on the surface of RBC and the other thing is presence of antibodies in plasma. Blood type A person will have A antigens on the surface of RBC and anti-B antibodies in their plasma. That is why they cannot accept blood from blood type B. Vice versa is the case of blood type B. In case of people with blood type AB, they contain both the antigens A and B on RBC surface but do not contain any antibodies. That is why they are called universal acceptors.
Marsupials are found in north america and australia. True or False
Answer:
True
According to UCMP Berkley, the only naturally occurring marsupial in the North America is the opossum (of different varieties).
Australia has a variety of marsupials, including the Tasmanian Devil, wombat, koala, and Red Kangaroo.
The map above shows some of Earth's plate tectonic boundaries.
Based on the map, volcanic activity would most likely be found at −
A) Location W
B) Location X
C) Location Y
D) Location Z
Final Answer:
Volcanic activity would most likely be found at Location Y based on Earth's plate tectonic boundaries.
The correct option is C.
Explanation:
Location Y corresponds to the convergence of tectonic plates, specifically a subduction zone where one plate sinks beneath another. Subduction zones are often associated with intense volcanic activity due to the melting of the descending plate as it moves into the Earth's mantle. This melting generates magma that can erupt through volcanoes, creating volcanic activity.
Locations W, X, and Z are not situated along plate boundaries that typically exhibit the intense volcanic activity associated with subduction zones. Location W represents a divergent boundary, X indicates a transform boundary, and Z depicts a convergent boundary with continental collision, but these boundaries are less prone to volcanic activity compared to subduction zones.
So, the correct option is C.
Consider two very distantly related species, Species A and Species B. These species live in distinct but similar environments and share a trait that improves their survival and reproduction in their respective environments. Which of the following is the most likely reason that Species A and Species B share this trait? descent from a common ancestor gene flow convergent evolution genetic drift
Answer:
convergent evolution
Explanation:
If we have two species that share a similar trait or look alike a lot, but they live in places isolated from each other, and they only have a very distant relation, then it is a case of convergent evolution. This type of evolution occurs with species that are not closely related, but they live in environments where having the same or very similar traits is advantageous. This can often lead to a confusion when looking at the species only on the outside, and it can be very misleading. As an example we can take the sabretoothed predators that existed in the past. Both the smiloden and the thylacosmilus had large saber like teeth, and even their bodies looked very similar, so one would assume that they are closely related, but that was not the case. The smilodon was part of the cat family, while the thylacosmilus was a marsupial, making them very distantly related. They developed same same and some very similar traits because their environment created the evolutionary pressure for those traits to develop as they were advantageous, despite them evolving in totally different places and separately.
the height of a type of plant is a normal distribution some plants are tall and some are short but most are in between what is most likely true about this trait
The most likely explanation for a continuous trait, like plant height, is that it is controlled by several different genes. Option C is correct
Given that the feature is described as having a normal distribution and a range of heights, it is most likely polygenic, meaning that it is regulated by several genes.
A continuous range of phenotypes results from the interaction of several genetic and environmental variables on the characteristic in a normal distribution.
Therefore, Several different genes control height
The complete option are :
The height of a type of plant is a normal distribution. Some plants are tall and some are short, but most are in between. What is mostly likely true about this trait?
A.) being short is a recessive trait
B.) height is controlled by one gene
C.) several different genes control height
D.) the height is a Mendelian trait
Who used a compound microscope to see chambers within cork and named them “cells”?
Answer:
Robert Hooke
Explanation:
Robert Hooke used a compound microscope to see chambers within cork and named them "cells."
Robert Hooke, an English scientist, is credited with the discovery of cells and the coining of the term "cells" to describe the microscopic structures he observed in cork under a compound microscope. In 1665, Hooke published his famous book "Micrographia," in which he detailed his observations using a microscope of his own design.
When examining a thin slice of cork under the microscope, Hooke observed a multitude of small, box-like structures with defined boundaries, resembling the cells of a honeycomb. He described these structures as "cells," drawing an analogy to the cells of a monastery, which were small rooms or chambers where monks lived.
Although Hooke's microscope was relatively simple compared to modern microscopes, his work marked a significant milestone in the history of biology and microscopy. His observations of cork cells were the first recorded discovery of cells as basic units of life, even though the cellular nature of living organisms was not fully understood at the time.
Hooke's discovery of cells laid the groundwork for the subsequent development of cell theory, which postulates that all living organisms are composed of cells, cells are the basic structural and functional units of life, and cells arise from pre-existing cells through cell division. Cell theory is now a fundamental principle of biology and has revolutionized our understanding of life and the complexity of living organisms. Hooke's contribution to microscopy and cell biology remains a significant and enduring legacy in the scientific world.
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Jasmine wants to know what grizzly bears eat. What would be the best way for her to find out? A. She should ask her math teacher about grizzly bears. B. She should do an experiment with grizzly bears in her school. C. She should observe grizzly bears up close in the wild. D. She should look up information about grizzly bears in a library book.
Answer:
D. she should look up grizzly bears in an informational book from the library
Explanation:
D. is the most logical of the answers so it is D.
The best method for Jasmine to find out what grizzly bears eat is to look up information about them in a library book. This will provide accurate and detailed information about their diet.
Explanation:Jasmine, to find out what grizzly bears eat, the most reliable method would be D. She should look up information about grizzly bears in a library book. While grizzly bears are fascinating, it's important to remember that for safety and ethical reasons, doing an experiment with grizzly bears at school (option B) or observing them up close in the wild (option C), are not fitting approaches. A math teacher (option A) might not have the detailed information you need about the grizzly bears' diet. Library books on the other hand, especially ones about animals or specifically about grizzly bears, will provide accurate and in-depth information on what grizzly bears eat.
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If a sound is refracted away from the surface of the earth, this indicates that the A. air is cooler than the ground. B. wind is blowing in the direction of the sound. C. ground is cooling faster than the air. D. air has high humidity.
Answer:
The correct answer is option A, that is, air is cooler than the ground.
Explanation:
Refraction refers to a phenomenon in which there is a modification in the direction of propagation of any wave as a consequence of its mediating at distinct velocities and at distinct points along the wavefront. In case, when a sound from s source is refracted away from the Earth's surface, there is an indication that the air present above is cooler in comparison to the ground making the sound to refract towards the less dense medium.
Answer:
a
Explanation:
Energy must be transformed in ecosystems because _______.
a.
energy cannot be created or destroyed
b.
an organism’s energy must go somewhere
c.
an organism’s energy must come from somewhere
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
the answer is D. all of the above on edge
Ice free areas of antarctica where no rain has fallen for all of recorded history
Final answer:
Antarctica, the driest continent on Earth, has ice-free areas with unique ecosystems, despite being largely covered by an ice sheet. It contains 70% of the Earth's fresh water in its ice, with significant implications for global sea levels if melted. The continent's extreme conditions support only temporary human habitation for scientific research.
Explanation:
The inquiry is about ice-free areas of Antarctica where no rain has fallen for all of recorded history. These regions are notable due to Antarctica's status as the driest continent on Earth, with the least average annual precipitation. Despite its icy appearance, it is technically a desert, receiving fewer than ten inches of precipitation per year overall. The continent covers about 98 percent with an ice sheet, and the ice-free areas contribute to a unique ecosystem of mosses and lichens, surviving in harsh conditions.
About 70 percent of the Earth's fresh water is held within the Antarctic ice sheet. If melted, this would raise sea levels considerably, affecting coastal and low-lying areas globally. Interestingly, Antarctica also harbors subglacial lakes, such as Lake Vostok, hidden beneath the ice sheet, potentially housing unknown forms of aquatic life. Despite the extreme cold and dry conditions, research stations dot the continent, supporting scientific exploration but no permanent human inhabitants.
In summary, Antarctica exhibits a complex interplay between its ice-covered landscapes, dry, ice-free zones, and the hidden aquatic ecosystems beneath its ice sheet, reflecting its status as a unique desert environment on a global scale.
A cell with membrane-bound proteins that selectively bind a specific hormone is called the ________ for that hormone
Answer:
target cell
Explanation:
Target cell for a certain hormone is a cell that have hormone receptor specific for that hormone. There are two main types of receptors on target cell:
cell membrane receptors (also called trans membrane receptors)-usually for peptide hormones, such as insulinintracellular receptors (also called nuclear receptors)-usually for steroid hormones, such as testosterone.Hormone binding to the receptor leads to the signal cascade within the cell, which results in cell response.
Which types of mutation are possible thanks to the redundant nature of the genetic code?
Cancer is a type of harmful mutation.
A closed circulatory system is one in which _______________
Answer:
A closed circulatory system is one in which blood flows though a system of blood vessels throughout the body.
Which is not a method used in genetic engineering?
A gene is inserted to remove mutated DNA.
A gene is removed.
A gene is inserted to make a mutation inactive.
A synthetic gene is created.
Answer: A synthetic gene is created
Explanation:
All of the other ones are actually affecting the organism. creating a gene could be a step but it is not really a method
The correct answer is A
1. Which of the following is NOT a characteristic that mining companies look for when determining if an area is worth mining?
a. Rock color
b. Radioactivity
c. Vegetation
d. Magnetism
2. You are a geologist testing to make sure that waste from a nuclear power plant is not leaking into a nearby farmer’s field. You will be testing for unstable, decaying nuclei. What are you testing for and how will you detect it?
a. You will test for radioactivity by using a microscope.
b. You will test for magnetism by using a Geiger counter.
c. You will test for fluorescence by using a barometer.
d. You will test for radioactivity by using a Geiger counter
3. We can use cow dung (feces) as a form of biomass.
a. True
b. False
4. The following equation is balanced correctly. H2 + O2 --> H2O
a. True
b. False
5. Using the periodic table, which of the following is an isotope?
a. Zn – 68
b. Cs - 133
c. Tb – 159
d. C – 12
1. A 2. C 3. A 4. B 5. D
Answer:
1. C Vegetation
2. D Geiger Counter
3. A True
4. B False
Explanation:
1. Rock color, Radioactivity and magnetism are important characteristics to determine the kind of mineralization and if it is economically viable.
2. Geiger Counter is a device that is used to detects alpha, beta or gamma rays through ionization of the radiation
3. 2H2 + O2 = 2H2O + Energy
4. Carbon-12 is an isotope of carbon, carbon-13 and carbon-14 are also the isotopes of carbon
At a meal, you are served a hamburger with cheese, onions, and beef on a bun. what ingredients represent the most carbohydrates? select all that apply.
the ingredients that have the most carbs, are bread and starches. in hamburger, breadcrumbs or another binding agent, oatmeal, rice etc. are also used to keep the meat from breaking apart.
Answer:
Cheese and Bun
Explanation:
Bun and cheese have more carbs than the other components of the hamburger. Bread has a lot of carbohydrates that are part of starch. Cheese also has some carbohydrates from milk, such as lactose.
Onions also have a certain amount of carbohydrates, but in a very small amount compared to previous ingredients.
Meat sometimes have products derived from starch or other meat-binding compounds, but they do not have a significant amount of carbohydrates.
What are some of the functions of photosystem i and photosystem ii in plants?
Answer:
Photosystem I (PS-I )and photosystem II (PS-II ) are two multi-protein complexes. These complexes contain the pigments used to absorb, harvest and catalyze the photons and light energy in the photosynthetic reactions. The main purpose of photosynthesis reactions to produce high chemical energy compounds.
Photosystem I and II are different from each other because of their absorbing wavelength of light. PS-I absorbs the longer wavelength of light than PS-II.
PS-I plays the major role in the production of high energy carriers ATP and NADPH using light energy (700 nm).
PS-II plays its function in the hydrolysis of water and ATP synthesis using light energy (680 nm).
Photosystem II (PSII) absorbs light energy and uses it to excite and remove electrons from water, causing water to split and release oxygen. The excited electrons are then passed to Photosystem I (PSI), which also absorbs light to re-energize the electrons before they reduce NADP+ into NADPH. Both systems contribute to ATP production and eventually enable glucose synthesis in the Calvin Cycle.
Explanation:The photosystems I and II are crucial components of the photosynthetic process in plants, playing vital roles in the conversion of light energy into chemical energy. Both systems are embedded in the thylakoid membrane of chloroplasts in plants.
Photosystem II (PSII) functions first in the process and its main role is to absorb light energy and use it to excite electrons, which are removed from water molecules, causing them to split and release oxygen. This is known as photolysis.
Following this, the excited electrons are passed along the electron transport chain to Photosystem I (PSI). PSI also absorbs light energy and uses it to re-energize the electrons, before they are used to reduce NADP+ into NADPH. Both PSI and PSII contribute to the production of ATP through chemiosmosis.
Thus, the ultimate products of the light-dependent reactions involving these photosystems are ATP, NADPH and oxygen, which are used in the next stage of photosynthesis, the Calvin Cycle, to produce glucose.
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Cells of a fungus and an animal were being studied. which of these would be found in both of these cells?
Mitochondria (btw, the exact question is online if you type it in.)
Fungal and animal cells both contain a nucleus, mitochondria, plasma membranes, and ribosomes, despite differences such as the presence of a cell wall in fungal cells containing chitin.
Both fungal and animal cells share several structures despite their differences. Cells of a fungus and an animal both contain a nucleus, where genetic material is stored and cellular activities are regulated. Additionally, both types of cells possess mitochondria, the energy-producing organelles often referred to as the powerhouses of the cell. Both also have plasma membranes that regulate the movement of substances into and out of the cell, although the specific compositions differ, with fungi having ergosterol instead of cholesterol. While fungi do have a cell wall composed of chitin, animals do not possess a cell wall, but instead have an extracellular matrix. Importantly, ribosomes are present in both animal and fungal cells and are responsible for protein synthesis. In summary, the nucleuses, mitochondria, plasma membranes, and ribosomes can be found in both fungal and animal cells.
Yellowish structures that serve as an energy reserve are called
Answer:
Lipids
Explanation:
Lipids are called energy reserves. Like carbohydrates, they can provide energy to the body but as readily as carbohydrates do. Lipids are also known as fats. Aside from providing the body with energy, they are also have a protective function. They act as cushions for different parts of the body like the heart. They are found in adipose tissue.
The yellowish structures serving as an energy reserve are fat cells, or adipose tissue. These cells store fat in the form of triglycerides which the body can use for energy. The yellowish color is due to carotenoids from our diets stored in fat cells.
Explanation:The yellowish structures that serve as an energy reserve in organisms are usually fat cells, also known as adipose tissue. Adipose tissue is a specialized connective tissue that consists of lipid-rich cells called adipocytes. These cells store fat in the form of triglycerides, which can be used by the body for energy when needed. It's typically yellowish because of the carotenoids in our diets that are stored in the fat cells.
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