which of the following is the process that ultimately feeds the world? answer unselected photorespiration unselected krebs cycle unselected photosynthesis unselected respiration
Answers
Photosynthesis is the process that ultimately feeds the world. By doing this, plants and other photosynthetic organisms transform solar light energy into chemical energy.
When does photosynthesis occur?In photosynthetic organisms, a metabolic pathway known as photorespiration takes place. It results in the release of carbon dioxide, the consumption of oxygen, and the absence of chemical energy or food. The rate of plant growth is constrained by this process.
What use does photorespiration serve?Photo inhibition is protected by photorespiration. NADPH generation in the light reactions of photosynthesis frequently surpasses the need of the Calvin cycle for reducing power when under stress conditions like dryness, cold, or strong light.
What is the photosynthesis cycle?Carbon fixation, reduction, and regeneration of the starting molecule are the three main phases of the Calvin cycle processes.
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Related Questions
which process allows organisms to use nitrogen based molecules
Answers
Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants. Recently fixed ammonia is then converted to biologically useful forms by specialized bacteria
How many different 8-mer sequences of DNA are there? (Hint: There are 16 possible dinucleotides and 64 possible trinucleotides.)
Answers
A "k-mer" sequence in a DNA is just a sequence of k characters in a string (or nucleotides in a DNA sequence). Now, it is important to remember that to get all k-mers from a sequence you need to get the first k characters, then move just a single character for the start of the next k-mer, and so on. Effectively, this will create sequences that overlap in k-1 positions. There are a total of 65,536 different 8-mer sequences of DNA.
To calculate the number of different 8-mer sequences of DNA, we need to consider that each position in the sequence can have 4 different nucleotides: adenine (A), thymine (T), cytosine (C), and guanine (G). Since we are considering an 8-mer sequence, there are a total of 8 positions.
For each position, there are 4 possible nucleotides, so the total number of possible sequences is obtained by multiplying the number of choices for each position. Therefore, the total number of different 8-mer sequences is 4⁸, which equals 65,536.
It's important to note that the hint provided about 16 possible dinucleotides and 64 possible trinucleotides is not directly relevant to calculating the number of different 8-mer sequences. The number of dinucleotides and trinucleotides represents the number of possible combinations of adjacent nucleotides, but for an 8-mer sequence, we need to consider all possible combinations of nucleotides for each position.
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Character displacement is likely to _______ the competition coefficients in two competing species and to _______ resource partitioning. (Explain your answer please)
a) increase; increase b) increase; lower c) increase; eliminate d)lower; increase e) lower; lower
Answers
Character displacement is likely to "increase" the competition coefficients in two competing species and to "lower" resource partitioning, option (b) is correct.
Character displacement refers to the evolutionary process in which competing species develop differences in their characteristics to reduce competition and facilitate coexistence. When character displacement occurs, the competing species evolve divergent traits that reduce overlap in resource use, resulting in a decrease in resource partitioning. This decrease in resource partitioning indicates a lower level of differentiation in resource utilization, as the species are avoiding direct competition by occupying distinct ecological niches.
At the same time, character displacement leads to an increase in competition coefficients between the species. The divergent traits acquired through character displacement enhance the competitive advantage of each species in their respective niches, increasing their ability to outcompete one another, option (b) is correct.
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what do you call heterotrophs that feed at different trophic levels?
Answers
Answer:
They are called decomposers.
Explanation:
osteoclasts are involved in which stage of bone remodeling? select one: a. resting stage b. bone resorption c. transition d. bone formation
Answers
Osteoclasts are involved in the bone resorption stage of bone remodeling because they remove broken bone tissues. Option b.
Bone remodeling is a continuous process in which old bone tissue is replaced by new bone tissue. The process involves three stages: bone resorption, transition, and bone formation.
Osteoclasts are large multinucleated cells that are responsible for bone resorption, which is the process of breaking down and removing old or damaged bone tissue.
During bone resorption, osteoclasts secrete enzymes and acids that dissolve the minerals and collagen fibers in the bone matrix. Hence, option b is correct.
The osteoclasts then phagocytize the degraded bone tissue, allowing the minerals and amino acids to be released into the bloodstream and used for other purposes in the body.
Once the bone resorption stage is complete, the transition stage begins, in which the site is prepared for new bone tissue to be formed. Finally, in the bone formation stage, osteoblasts synthesize and deposit new bone tissue to replace the old tissue that was removed during bone resorption.
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A. what happens when fermenting bacteria uses up all the glucose present in tsi media? explain your conclusion.
Answers
When fermenting bacteria use up all the glucose present in TSI media, the pH of the media lowers, and the environment becomes acidic.
The bacterium will then shift to the protein in the media. They will use peptone as the substrate to continue the fermentation process.The initial color of the media changes from red to yellow, indicating a positive result for acid production.
Fermenting bacteria is known to consume glucose in the TSI media. As a result, they create acidic products like lactic acid, acetic acid, and ethanol from fermentation. When there is no more glucose present in the media, the bacterium would then use the peptone or protein present in the media as a substrate for the fermentation process.
This fermentation produces alkaline byproducts like ammonium, hydrogen sulfide, and indole. Due to the production of these alkaline byproducts, the media changes its initial color from yellow to red.
Thus, when fermenting bacteria use up all the glucose present in TSI media, the initial color changes from red to yellow, and then from yellow to red again, indicating an acidic environment at the beginning and an alkaline environment later.later.
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3
Place the following types of EM radiation in order, from
lowest energy to highest energy: A) Visible light; B) Gamma
rays; C) Radio waves
А д, с, в
B. GA, B
С
B, CA
D C, B, A
Helppp!!!!
Answers
Answer:
B
radio waves, visible light, gamma rays
Answer:
B
C,A,B
Explanation:
Primary consumers, herbivores that
feed on plants, are found on what
level of an energy pyramid?
A) first
B) Second
C) Fourth
Answers
Ans
C) fourth
Explanation:
I took ap environmental science and we leaned this
The following segment of mRNA codes for a segment of a polypeptide:
5' ......AUG-AAA-CAA-UUU-AAU-CUA-UUC-UCU-AUU-AAA-ACC .....3'
a) Indicate if it is in RNA or DNA
b) Perform the replication of the molecule.
c) indicate which enzymes and what is the function of each of them in the replication process.
d) Draw a DNA molecule and indicate each of its components.
Answers
The components of a DNA molecule include deoxyribose sugar, phosphate group, and nitrogenous bases (adenine, thymine, cytosine, and guanine).
What are the components of a DNA molecule?a) The given segment is in mRNA (messenger RNA) form.
b) Since the given segment is already in mRNA form, replication, which is the process of synthesizing a complementary DNA strand, is not applicable here.
c) Enzymes involved in DNA replication include:
DNA helicase: Unwinds the double-stranded DNA by breaking the hydrogen bonds between the base pairs. DNA polymerase: Catalyzes the synthesis of a new DNA strand by adding complementary nucleotides to the template strand. DNA primase: Synthesizes short RNA primers that provide a starting point for DNA polymerase to begin replication. DNA ligase: Joins the Okazaki fragments (short DNA segments on the lagging strand) by catalyzing the formation of phosphodiester bonds. DNA topoisomerase: Relieves the torsional strain generated during DNA unwinding.d) Unfortunately, as a text-based AI, I cannot draw images. However, a DNA molecule consists of two strands forming a double helix structure. The components of DNA include:
Deoxyribose sugarPhosphate groupNitrogenous bases (adenine, thymine, cytosine, and guanine)Learn more about DNA molecule
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which of the following lesions indicate(s) disruption in the protective barrier of the skin?
Answers
All of the listed lesions, namely ulcer, erosion, excoriation, and burn, indicate disruption in the protective barrier of the skin.
1. Ulcer: An ulcer refers to an open sore or wound that extends below the surface of the skin. It occurs when the outer layers of the skin are completely lost, exposing the underlying tissue. Ulcers can result from various factors, such as infections, poor circulation, or chronic inflammation, and they signify a significant breakdown in the skin's protective barrier.
2. Erosion: An erosion is a shallow loss of the epidermis (the outermost layer of the skin). It appears as a superficial, moist, or crusted area. Erosions can arise from a variety of causes, including friction, scratching, or inflammation. They indicate a disruption in the integrity of the skin's protective layer, albeit to a lesser extent than ulcers.
3. Excoriation: Excoriation refers to the removal of the superficial layers of the skin, typically through scratching or rubbing. It results in linear or punctate abrasions on the skin's surface, breaking the barrier function of the skin and leaving it vulnerable to further damage or infection.
4. Burn: A burn occurs when the skin is damaged due to exposure to heat, chemicals, electricity, or radiation. Burns disrupt the protective barrier of the skin by causing tissue damage, leading to loss of skin integrity and increased susceptibility to infection.
In summary, all the mentioned lesions signify disruptions in the protective barrier of the skin, ranging from severe damage (ulcer, burn) to milder forms of skin disruption (erosion, excoriation).
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Complete Question:
Which of the following lesions indicate disruption in the protective barrier of the skin? -Ulcer -Erosion -Excoriation -Burn.
How are trees agents of mechanical weathering?
Practice
A
Growing tree roots physically break apart rock.
B
Tree roots secrete a lot of acids that react with minerals in the rock.
C
Trees cause chemical reactions to take place altering the soil and rock nearby.
D
Trees do not cause rocks to weather.
Answers
Growing tree roots physically break apart rock are the tree agents of mechanical weathering. So, the correct option is (A).
What is Mechanical Weathering?Mechanical weathering is also called physical weathering in which a large rock breaks down into smaller pieces of rocks. When rocks decompose or break down without experiencing any change in their chemical composition, it is known as mechanical weathering.
There are 3 Mechanical Weathering Processes which break down rocks
Frost wedging.Exfoliation.Biological activityThe roots of a plant grow into a crack in a rock. When these roots grow, they open the crack. Burrowing animals can also cause weathering. The animal may break the rock to dig for food or make a hole to live in.
Thus, growing tree roots physically break apart rock are the tree agents of mechanical weathering. So, the correct option is (A).
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Which of the following statements about allosteric control of enzymatic activity is false?
A) Allosteric effectors give rise to sigmoidal V0 vs. [S] kinetic plots.
B) Allosteric proteins are generally composed of several subunits.
C) An effector may either inhibit or activate an enzyme.
D) Binding of the effector changes the conformation of the enzyme molecule.
E) Heterotropic allosteric effectors compete with substrate for binding sites.
Answers
The false statement about allosteric control of enzymatic activity is:
E) Heterotropic allosteric effectors compete with substrate for binding sites.
In allosteric regulation, heterotropic allosteric effectors do not compete with the substrate for binding sites. Instead, they bind to regulatory sites on the enzyme distinct from the active site, leading to conformational changes that affect the enzyme’s activity. Allosteric effectors are molecules that can either enhance (positive allosteric effectors) or inhibit (negative allosteric effectors) the activity of an enzyme. When an allosteric effector binds to the regulatory site of an enzyme, it induces a conformational change, either stabilizing or destabilizing the active form of the enzyme, which affects its catalytic activity. This binding is often cooperative, resulting in sigmoidal V0 vs. [S] (substrate concentration) kinetic plots, as stated in statement A. Allosteric proteins are generally composed of several subunits, as mentioned in statement B. These subunits can be identical or distinct, and their interaction is responsible for the allosteric behavior of the protein. In summary, the false statement is E, as heterotropic allosteric effectors do not compete with the substrate for binding sites but bind to regulatory sites, leading to conformational changes that modulate enzyme activity.
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HELP! I NEED IT SOON! ILL GIVE BRAINLIEST
Answers
Answer: A: People with different goals can make contributions to scientific knowledge.
Schwann and Virchow both had different goals for what they were trying to discover, but both ended up adding to the same theory.
Hope this helps :)
Which part of the virus houses the nucleic acid?
a) nucleus
b) capsid
c) nucleoid
d) plasmid
Answers
Answer:
The answer is b) capsid.
Explanation:
Answer:
b) capsid
Explanation:
There are a few types of enzymes, but they each perform many types of
reactions. *
true or false
Answers
Answer:
true
Explanation:
Please explain how cells maintain RMP at-90mV. In your explanation please include: 1. Discuss chemical and electrical gradients for Na and Kions. 2. Explain by which mechanisms these gradients are maintained: leakage channels for Na and K 3. Role of NA/K pump 4 Draw a diagram of a cell and indicate both chemical and electrical gradients for Na and Kions. 5. Which mechanism would be used to lower RMP to -70mV?
Answers
Cells maintain their resting membrane potential (RMP) at -90 mV through the actions of ion channels and pumps, primarily involving sodium (Na+) and potassium (K+) ions.
Chemical gradients are formed by differences in ion concentrations inside and outside the cell, with high Na+ concentrations outside and high K+ concentrations inside. Electrical gradients result from the separation of positive and negative charges across the membrane.
Leakage channels for Na+ and K+ allow passive movement of these ions across the membrane, following their respective concentration gradients. K+ ions leak out more readily than Na+ ions, causing a net negative charge inside the cell. The Na+/K+ pump actively maintains these gradients by using ATP to move 3 Na+ ions out and 2 K+ ions in, further contributing to the negative charge.
A diagram cannot be drawn in text format, but imagine a cell with arrows representing Na+ moving out and K+ moving in, as well as a Na+/K+ pump maintaining their gradients.
To lower the RMP to -70 mV, more Na+ leakage channels would open, allowing more Na+ ions to enter the cell. This would make the inside of the cell less negative, shifting the RMP closer to the threshold for generating an action potential.
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Match each lung disorder to its description.
Answers
Pneumonia - Infection causing fluid to build up inside the lungs
C o v i d - Newly discovered respiratory virus
Mesothelioma - Cancer of the outer lung cells frequently caused by asbestos exposure
Asthma - Constriction of the airways, commonly treated with a rescue inhaler
Emphysema - destruction of the walls of the a lv eoli
P neumotho rax - reduced lung volume due to air or fluid collecting around the outside of the lung.
Hope this helps! :)
hi I want some pictures from science. class 1 PISCES.class 2 AMPHIBIA. class three REPTILIA .class 4 MAMMALIA.I want these topics for pictures please screenshot and send me guys and post it
Answers
Explanation:
please give me brainlest
Where do you think a plant might get its energy during fall and winter
Answers
Answer:
Each plant is transformed differently in the fall intimately dormancy is the way plants conserve energy by using the stored sugers and carbohydrates they produce during the growing season to survive the winter.
Why does the gravitational pull between Earth and the moon affect Earth's tides more than the gravitational pull between Earth and the sun?
Answers
Answer:
Because the moon is closer to Earth than the sun, that is to say, the gravitational pull of the moon is stronger than the gravitational pull of the sun affecting the tides more than the sun.
Explanation:
The sun has a larger size than the moon and stronger gravitation. However, as it is farther from the Earth in comparison with the moon, the gravitational pull between the sun and our planet is weaker than the one between the moon and the Earth. Even though the moon is smaller, the gravitational pull is stronger because it is closer to Earth. As a result, the moon affects the tides more than the sun does.
which findings could lead to the presence of edema? select all that apply. decrease in fluid pressure decreased oncotic pressure decreased albumin decreased hydrostatic pressure release of antidiuretic hormone
Answers
The presence of edema can be caused by several factors. Decreased fluid pressure, decreased oncotic pressure, decreased albumin, decreased hydrostatic pressure, and the release of antidiuretic hormone (ADH) are all potential causes of edema.
Decreased fluid pressure occurs when there is decreased circulating volume. This can be caused by a variety of factors, such as dehydration, hemorrhage, and sodium loss. Decreased oncotic pressure occurs when the amount of proteins (albumin) in the plasma is decreased. This can be caused by conditions such as liver cirrhosis, nephrotic syndrome, and malabsorption. Decreased albumin can be caused by conditions such as liver cirrhosis, nephrotic syndrome, and malnutrition. It can also be caused by decreased production of albumin in the liver or increased catabolism of albumin. Decreased hydrostatic pressure occurs when the pressure of the fluid in the blood vessels decreases. This can be caused by conditions such as congestive heart failure and hypovolemic shock. The release of antidiuretic hormone (ADH) can also cause edema. ADH is released in response to decreased plasma osmolality, causing an increase in the reabsorption of water by the kidneys and leading to an increase in extracellular fluid volume.
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What is the major difference between positive and negative feedback?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Positive feedback results from temperature increases, while negative feedback results from temperature decreases.
(Choice B)
B
Positive feedback stimulates body systems, while negative feedback shuts down body systems.
(Choice C)
C
Positive feedback causes responses to continue, while negative feedback causes responses to start or stop.
(Choice D)
D
Positive feedback is controlled by external factors, while negative feedback is controlled by internal factors.
Answers
positive feedback mechanism more to stimulate or triggered to continue the response, such as the secretion of oxytoxin to continue when labouring a baby or secretion of milk from mother’s breast for the baby.
negative feedback mechanism is more like to control or regulate the response such as regulating the body temperature when our body temperature keep increasing or decreasing .
i am sorry if i was wrong but hope it helps.
The major difference between them is that (C) Positive feedback causes responses to continue, while negative feedback causes responses to start or stop.
Difference between positive and negative feedbackPositive feedback is when something happens that makes more of that thing happen. This continues to happen and makes the thing get even bigger or stronger. It moves the thing further away from how it was at the start. Positive feedback is not very common in biological systems, but it is important for things like blood clotting and childbirth
Negative feedback is when something happens in a system that causes the opposite thing to happen, which helps the system go back to how it was before.
Negative feedback is something that commonly happens in living things. It helps to keep things stable inside the body. For instance, if the body gets too hot, there are processes in place that kick in to cool it down and bring it back to a normal temperature.
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NO LINKS
Why was penicillin considered a miracle drug?
A. It is made from mold.
B. It cures deadly diseases.
C. It prevents bacterial infections.
D. It was discovered during World War I.
Answers
Hi they
B is answer
why? well because when they discover it this changes the world. this drug helped with infections or bacterial and more.
The atmosphere of Earth today primarily contains the following gases: carbon dioxide (CO2), water vapor (H2O), nitrogen (N2), and.
Answers
Answer:
either oxygen or argon, because they are both in the atmosphere
Explanation:
The atmosphere of Earth today primarily contains the following gases: carbon dioxide, water vapor, nitrogen, and either oxygen or argon, because they are both in the atmosphere.
What is pollution?Pollution has been considered as the harmful substances that could damage the organisms as well as the environment. Decomposition would be returns of the nutrients into the soil which would helps organisms to grow and to reproduce.
Replenishment has to fill something which would be a good thing and it includes improvement which means just to make something better which has been also the good thing. Degradation means to degrade or to make something worse which has what pollution use to be doing to organisms and the environment.
The original DNA molecule is the template for the new DNA molecules and two new DNA molecules form and the original DNA molecule dissolves as the original DNA molecule is replaced by a complementary DNA molecule.
Therefore, The atmosphere of Earth today primarily contains the following gases: carbon dioxide, water vapor, nitrogen, and either oxygen or argon, because they are both in the atmosphere.
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chromosomes that are not involved in sex determination are called
Answers
Chromosomes that are not involved in sex determination are called autosomes. Autosomes are responsible for carrying genes that control the inheritance of non-sex-related traits and characteristics.
In humans, there are 22 pairs of autosomes, numbered from 1 to 22, in addition to the sex chromosomes (X and Y).
Autosomal chromosomes are present in both males and females and contain a wide range of genetic information that influences various aspects of an individual's physical and biological characteristics.
These chromosomes play a crucial role in determining traits such as eye color, height, hair type, and susceptibility to certain genetic disorders, among many others.
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Select the correct answer from each drop down menu.
Specialized cells such as white blood cells interact with foreign particles in the body. A particular cell belonging to the category recognizes bacteria and forms a covering around it, pinching off the vacuole. The cell then performs 1.______ . The foreign particles recognized by the particular type of cells differ from one’s recognized by another type of white blood cell. The situation indicates that the receptors are 2._______.
Options 1. Endocytosis
Exocytosis
Diffusion
Option 2. The same for all the cells, specific for the cells, never present on cells
Answers
Endocytosis and Receptors are particular to the cells are the right selections .The immune system's white blood cells have specific functions.
Why do white blood cells in the immune system have certain roles to play?The immune system's white blood cells have specific functions. They are essential in keeping the body safe from outside threats like bacteria. This is accomplished by them recognizing the bacteria and forming a coating around it that pinches off the vacuole. This results in a process known as endocytosis being carried out by the cell ( specifically phogocytosis).White blood cells have very unique receptors that they can bind to. As a result, they can distinguish between different foreign substances. For instance, B-cells create antibodies that attach to particular antigens (foreign proteins) and so trigger a particular immune response. To put it another way, a certain type of white blood cell may distinguish a certain foreign substance. This shows that these cells have specialized receptors.To learn more about White blood cells refer to:
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The discovery of kenyanthropus platyops, with its somewhat unexpected morphology for its time period, was important mainly because it?
Answers
The discovery of Kenyanthropus platyops was important because it challenged the traditional story of human evolution. Before its discovery, it was believed that humans had evolved from Australopithecus afarensis, also known as Lucy.
However, the unexpected morphology of the fossilized remains of K. platyops, found in the unique lake deposits of the East Lake Turkana Basin of Kenya, showed that multiple evolutionary pathways were possible. It indicated not only that the human lineage was more diverse than previously believed, but also that it had existed in Africa for longer than previously imagined.
K. platyops also showed us the potential of evolutionary change within a short time period—it was estimated that K. platyops existed about 3.5 million years ago, only 500,000 years after the emergence of A. afarensis.
The implications of this discovery go beyond simply shedding new light on human evolution: it also supports the idea that the modern human species is the result of multiple lineages, rather than a single one.
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fall and spring turnover of many lakes in temperate environments is important for a. benthic macroinvertebrate reproduction b. avoiding prolonged surface freezing of lakes c. mixing nutrients from bottom waters back into the lake d. reducing oxygen in deep lake waters e. c and d
Answers
Fall and spring turnover of many lakes in temperate environments is important for mixing nutrients from bottom waters back into the lake. The correct option is C.
Turnover in lakes refers to the mixing of the different layers of water in the lake, and it occurs in the fall and spring as a result of changes in water temperature.
Mixing nutrients from the bottom waters back into the lake is important because it redistributes nutrients that have accumulated in the bottom sediments back into the water column, where they can be utilized by phytoplankton and other organisms in the food chain. This is essential for maintaining the overall productivity of the lake ecosystem.
The correct option is C.
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What information would you have to know to determine the toughness of a solid?
Answers
Answer:
what materials are able to scratch it
I am not yo sure if this the right answer.... I think it is though... :))))))
Explanation:
Triglycerides are a type of fat molecule found in your blood, created from storing excess food in long-term energy storage. Based on that knowledge, which macromolecule do you think it is most likely to be?
Answers
Based on that knowledge, lipid is the macromolecule i think it is most likely to be.
What is lipid ?Lipid has been as defined as an organic compound that is unable to dissolve in the water. The example of the lipid is oils, waxes, hormones, and fats. The main function of lipid has to maintain the structure or components of the cell membranes, the storage site of energy, and most important molecule of the cell signaling.
The main function of the protein has to the maintain the structure and function of the organs, and to repair muscle, and muscles. Diet contains the high protein which has recommended for the purpose of losing weight, reducing fat, or increasing fat.
Therefore, Based on that knowledge, lipid is the macromolecule i think it is most likely to be.
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