A flexor is a skeletal muscle whose shortening moves attached bones.
Answers
A flexor is a skeletal muscle whose shortening moves attached bones. Flexors are muscles that cause joints to flex bend and straighten extend. Flexors are found on the front side of the body, and they bend your limbs towards your body.
In contrast, the extensors are located on the opposite side of the body and straighten the limbs away from the body. Muscles that cause joint movement are called skeletal muscles. When they contract or shorten, they move the bones that are attached to them. There are muscles called flexors, which shorten to bring bones closer together or closer to the body midline.
For example, the biceps brachii muscle flexes the elbow joint to raise the forearm. A flexor muscle is a muscle that causes a joint to bend. This is opposed to an extensor, which straightens or extends a joint. When a flexor muscle contracts, it pulls its tendons, which are attached to bone, and shortens the distance between the bones it connects. This shortening movement causes the joint to bend.
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Related Questions
enzymes are important proteins that help chemical reactions to occur in organisms
Answers
Yes, enzymes are important proteins that catalyze chemical reactions in living organisms. They act as catalysts, meaning they speed up the rate of a reaction without being consumed in the process.
Enzymes bind to specific molecules, called substrates, and lower the activation energy needed for the reaction to occur. This allows the reaction to proceed at a faster rate and with greater efficiency.
Enzymes are involved in a wide range of biological processes, including metabolism, digestion, and DNA replication. They play a crucial role in maintaining the chemical balance within cells and organisms.
An enzyme is a type of protein that acts as a catalyst in living organisms. It helps to speed up chemical reactions by lowering the activation energy needed for the reaction to occur. Enzymes bind to specific molecules, called substrates, and change their shape to create an active site.
This active site enables the chemical bond of the substrate to be broken or formed, thus catalyzing the reaction. Enzymes are specific to certain substrates and reactions, meaning that each enzyme is designed to catalyze a specific set of chemical reactions.
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Energy can be formally defined as the a. heat generated by atoms losing electrons b. displacement of heat from the sun to the earth c. capacity to do work d. process of moving objects e. velocity of any moving object
Answers
Energy can be formally defined as the capacity to do work which means option c is the correct choice.
Scientists outline energy because the capacity to do work. Modern civilization is feasible due to the fact humans have found out a way to extrade electricity from one shape to every other after which use it to do work. Energy is described because the “capacity to do work, that is the capacity to exert a pressure inflicting displacement of an object.” Despite this complicated definition, its that means could be very simple: electricity is simply the pressure that reasons matters to move. Energy is split into types: cap potential and kinetic. In environmental science, electricity normally refers back to the era of strength for human use.
Thus, option c is the correct choice.
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1. Explain to a non-economist the following scenarios.
a. problem of fat vs thin tails in establishing the price of carbon.
b. what factors affect Weitzman’s index of which species to save in his Noah’s Ark framework and why it might not imply all species get saved.
Answers
The problem of fat vs thin tails in establishing the price of carbon refers to the challenge of determining the appropriate price for carbon emissions. It involves considering the potential risks and uncertainties associated with climate change, particularly extreme events with low probabilities but high impacts.
Weitzman's index in the Noah's Ark framework is used to prioritize which species to save based on certain factors. However, not all species may be saved due to limitations such as practical feasibility, resource constraints, and the trade-offs involved in conservation decisions.
a. The problem of fat vs thin tails in establishing the price of carbon can be explained by considering the risks and uncertainties associated with climate change. The "fat tails" refer to the possibility of extreme and rare events occurring, such as catastrophic climate impacts. On the other hand, the "thin tails" represent more predictable and moderate outcomes. Establishing the price of carbon involves assessing the potential damages and risks associated with climate change and incorporating them into the pricing mechanism. The challenge lies in determining how to account for the fat tail events, which have low probabilities but could have severe consequences. It requires balancing the need to address the worst-case scenarios while considering the economic impacts and uncertainties involved.
b. Weitzman's index of which species to save in the Noah's Ark framework takes into account various factors when prioritizing conservation efforts. These factors may include a species' uniqueness, ecological significance, and evolutionary distinctiveness. However, not all species can be saved due to practical limitations and trade-offs. Conservation efforts often face resource constraints, making it impossible to protect all species equally. Additionally, the practical feasibility of conservation actions, such as habitat preservation or captive breeding programs, may vary among species. The decision-making process involves considering the potential benefits and costs associated with saving different species, taking into account available resources and the overall goal of preserving biodiversity. Therefore, while Weitzman's index provides a useful framework for prioritizing species conservation, it does not guarantee the preservation of all species due to practical constraints and trade-offs involved in conservation decision-making.
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Pls help it’s due today at 1:00 pm
Answers
Answer:
The mutation is on chromosome/karyotype 8.
Why would it be important to understand what controls the number and types of species in an ecosystem?
•THERE’S ALSO OTHER QUESTIONS IN THE PIC (if you could answer them it would be appreciated)
Answers
Answer:The short film Some Animals Are More Equal than Others: Trophic Cascades and Keystone Species opens by asking
two fundamental questions in ecology: “What determines how many species live in a given place? Or how large
can each population grow?” The film then describes the pioneering experiments by Robert Paine and James Estes,
in the 1960s and 1970s, which started to address them. Paine’s experiments on the coast of Washington state
showed that the starfish is a keystone species, having a disproportionately large impact on its ecosystem relative
to its abundance. Estes and colleague John Palmisano discovered that the kelp forests of the North Pacific are
indirectly regulated by sea otters, which feed on sea urchins that consume kelp. The presence or absence of sea
otters causes a cascade of direct and indirect effects down the food chain, which in turn affect the structure of
the ecosystem. These early experiments inspired countless others on keystone species and trophic cascades in
ecosystems throughout the world.
Explanation:
HAND TYPED!!
place the steps of prokaryotic dna replication in order, from the bacterium initiating dna replication to dna‑replication termination.
Answers
Answer:
Initiation: The replication process begins when the helicase enzyme unwinds the double helix structure of the DNA, creating a replication fork.
Priming: The primase enzyme binds to the single-stranded DNA and synthesizes a short RNA primer.
Elongation: The DNA polymerase III enzyme binds to the RNA primer and begins to extend the new strand by adding nucleotides in the 5' to 3' direction.
Lagging strand synthesis: Okazaki fragments are created by DNA polymerase III and later joined by ligase enzyme.
Termination: The replication process ends when the two replication forks meet and the two new daughter DNA molecules are fully formed.
What is the best pH for amylase activity according to your VL? O All are correct. O Amylase works best at pH 2 but generates a little maltose at pH 7. O None O Amylase works equally well at either pH; there is no noticeable difference. O Amylase works best at pH 7 but generates a little maltose at pH 2
Answers
It was discovered that purified human pancreatic alpha-amylase was stable throughout a wide pH range (5.0 to 10.5), with 7.0 being the ideal pH for enzymatic activity.
What is the ideal temperature and pH for amylase?The pH and temperature ranges for Amylase are 7 (neutral) as well as 37 degrees C, respectively. The same issues are present in our bodies as well. An enzyme may catalyze processes at its record pace when it is operating inside its own Optimal Range or set of circumstances.
Why is preserving a pH of 7.4 so crucial?The normal pH of the human body is 7.4, and it must be kept at this level for optimal performance. Every food we eat has a different pH level. As a result, if we eat or drink something that is excessively acidic or alkaline, the delicate balance is temporarily upset and our systems are continuously attempting to restore it.
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Which of the following organisms is a heterotroph? a) Rose b) Pine tree c) Deep-sea tubeworm d) None of these
Answers
Since the given organisms prepare their own food, hence none of the organisms mentioned are heterotrophs. Thus, the correct answer is Option D.
Heterotrophs are organisms that depend on other species (plants and animals) for food since they are unable to prepare it for themselves. They are dependent on these producers for food, either directly or indirectly.
The rose and the pine tree, two of the choices given, are both autotrophs since plants can make their own food through photosynthesis. On the other hand, the deep-sea tubeworm is a chemoautotroph, meaning it gets its energy from inorganic substances in its surroundings.
Therefore, the correct answer is Option D.
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what are the main characteristics of foraminiferans, radiolarians, and ciliates?
Answers
Foraminiferans, radiolarians, and ciliates are all protists, which are single-celled eukaryotes. They are all found in aquatic environments, and they play an important role in the marine food chain.
Foraminiferans are amoeboid protists that have a hard outer shell. The shell is made of calcium carbonate, and it can be simple or complex in shape. Foraminiferans are filter feeders, and they use their pseudopods to capture food particles from the water.
Radiolarians are also amoeboid protists, but they have a skeleton made of silica. The skeleton can be spherical, needle-shaped, or branched. Radiolarians are also filter feeders, and they use their pseudopods to capture food particles from the water.
Ciliates are protists that have cilia, which are short, hair-like structures that help them to move and to capture food. Ciliates are the most complex of the three groups, and they can be found in a variety of shapes and sizes. Some ciliates are free-living, while others live in association with other organisms, such as algae or animals.
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If there is a high concentration of carbon dioxide in the blood stream, it will diffuse into the _______
A. Hemoglobin
B. Alveolus
C. Capillary
D. Protein Channel
Answers
If there is a high concentration of carbon dioxide in the bloodstream, it will diffuse into the Capillary (Option C).
What are pulmonary capillaries?Pulmonary capillaries are small blood vessels that are able to perform gas exchange.
The process of gas exchange in the respiratory system is fundamental for carrying out cellular respiration by obtaining oxygen from the air.
In conclusion, the high concentration of CO2 in the bloodstream diffuses into the capillaries (Option C).
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endemic species have distributions limited to small geographic areas, and they are particularly at risk of extinction as a result of global climate change. why? group of answer choices endemic species occur predominantly in colder. all endemic species have long generation times that make evolutionary adaptation to climate change prohibitively. all endemic species are already stressed by other human. small and isolated geographic ranges make avoiding unfavorable climate conditions difficult.
Answers
The Correct answer is D,"Small and isolated geographic ranges make avoiding unfavorable climate conditions difficult."
Climate refers to the long-term patterns of temperature, precipitation, humidity, wind, and other atmospheric conditions in a particular region or on the planet as a whole. Climate is influenced by a complex system of factors, including solar radiation, the composition of the atmosphere, the Earth's rotation, and the movement of ocean currents.
Climate can vary significantly from one region to another, and can also change over time. The study of past climate change can provide insights into how the Earth's climate system works, and can help scientists make predictions about how climate will change in the future. Climate change is a pressing global issue, as human activities such as burning fossil fuels and deforestation have caused an increase in greenhouse gas concentrations in the atmosphere, which traps heat and causes the Earth's temperature to rise.
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A farmer sprays for pests on the
first of each month. What type of
control is this?
Answers
Answer:
not recommended according to IPM
Explanation:
the development of an acoustic neuroma affects the eighth cranial nerve. in which order do these effects occur
Answers
When an acoustic neuroma develops, it affects the eighth cranial nerve, also known as the vestibulocochlear nerve. The effects occur in the following order:
1. Hearing loss: The tumor can press against the cochlear portion of the eighth cranial nerve, leading to gradual hearing loss in the affected ear. This usually occurs before any other symptoms manifest.
2. Tinnitus: Tinnitus, or ringing in the ear, may occur as a result of the pressure exerted by the tumor on the nerve.
3. Balance problems: As the tumor grows, it can affect the vestibular portion of the eighth cranial nerve, leading to balance problems. This can cause dizziness, unsteadiness, and difficulty maintaining balance.
It's important to note that the exact order and severity of these effects can vary from person to person, as well as the specific symptoms experienced. Consulting with a healthcare professional is essential for accurate diagnosis and appropriate treatment.
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Identify the number classified as composite.
O 67
O 47
0 27
O 37
Answers
Answer:
27
Explanation:
Prime number - Can only be divided by one and itself
Composite number can be divided by numbers other than one and itself
Answer:
27
Explanation:
hope this helps!! have a great day, night, or afternoon!! O(n_n)O
Point B weighs three times as much as point C, and point A weighs twice as much as point C Point A weighs three times as much as point B.
Answers
The coordinates of their weighted average is (-1, -2).
What is weighted average?In Mathematics, weighted average can be defined as a product of a data point's weight and the sum of all the data points in a data set, divided by the sum of each weights.
By applying weighted average, the average of the points on the x-coordinates is given by:
x = (3 × (-4) + 2 + 5)/5
x = -1.
By applying weighted average, the average of the points on the y-coordinates is given by:
y = (3 × (-4) + 0 + 2)/5
y = -2.
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Complete Question:
Point A weighs three times as much as point B. Find the coordinates of their weighted average.
Enter your answer as (X, Y) (e.g. (1.5,-6))
What are the two phases of the respiratory movement of Man? Are they the same in grasshopper or fish ?? PLS HELP ME !!GRADE 7
Answers
Answer:
Men's respiratory movement is divided into two phases: inspiration (or inhalation) and expiration (or exhalation). Men and fish have the same stages of respiratory activity because they both inhale and exhale, except for their fish, of course.
Explanation:
sorry if it is not right but hope this helps :)
Aside from being a good marksman, what is the key to making a clean kill?
A
luck
B
patience
C
range
D
weather
Answers
Answer:
C. range
Explanation:
Being a good marksman requires a very good range of whatever target you intends to shoot.
Metabolism is the sum of all reactions occurrin reactions can be described as catabolic or between these two terms. Explain kinetic energy and potential energy. What is chemical energy? Is it a type of potential energy? Describe the two laws of thermodynamics. How does energy flow through an ecosystem? What is entropy? If entropy is increasin Earth? What is the difference between an exergonic and endergonic reaction? ATP is our cells' energy molecule. What does ATP stand for? Why is ATP the standard energy molecule? ls ATP completely broken down when we molecule is used? When we use the molecule, ATP is converted to Give some examples of how a cell uses ATP. How does an enzyme lower the energy of activation in a reaction? An enzyme has a specific because of the specific shape of the active site on the enzyme. What four factors affect enzyme activity? How can an enzyme be denatured? What happens to an enzyme that has been denatured? Can it still work? Q in a cell (or body as a whole). These anabolic. Briefly explain the difference 9 in the universe, how do we explain the increase in complexity on use the energy? If not, what part of the
Answers
Metabolism: catabolic or anabolic reactions. ATP: energy molecule used by cells for various processes.
Digestion is the amount of all responses happening in a life form. These responses can be depicted as catabolic (separating complex atoms into more straightforward ones) or anabolic (building complex particles from easier ones).
Motor energy alludes to the energy of movement, while potential energy is put away energy that can possibly be changed over into different types of energy. Substance energy is a sort of potential energy put away in the obligations of particles. It is delivered or ingested during synthetic responses. Compound energy is a type of expected energy.
The two laws of thermodynamics are:
1. The Primary Law of Thermodynamics, otherwise called the Law of Preservation of Energy, expresses that energy can't be made or obliterated in a separated framework, however it tends to be changed over starting with one structure then onto the next.
2. The Second Law of Thermodynamics expresses that in any energy move or change, the all out entropy (jumble) of a disengaged framework generally increments. Entropy is a proportion of the irregularity or confusion of a framework.
Energy courses through an environment in a unidirectional way. Daylight is caught by plants during photosynthesis, changing over it into substance energy. This energy then moves through the established pecking order as life forms consume and are consumed by others.
Entropy is a proportion of the problem or irregularity in a framework. It will in general increment over the long run in a secluded framework except if energy is contribution to diminish it.
An exergonic response discharges energy, while an endergonic response requires energy contribution to continue. ATP (adenosine triphosphate) is our cells' energy particle.
It represents adenosine triphosphate. ATP is the standard energy particle since it can undoubtedly give and move energy to drive cell processes.
ATP isn't totally separated when it is utilized. It is hydrolyzed to ADP (adenosine diphosphate) and inorganic phosphate, delivering energy that can be utilized by the phone.
Cells use ATP for different cycles, like muscle compression, dynamic vehicle, DNA amalgamation, and protein combination. Catalysts bring down the enactment energy expected for a response, working with and accelerating synthetic responses in the phone.
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Write the simple equation that describes the action of the enzyme catalase. What is/are the substrate(s)? What is/are the product(s)? Why is it important that cells contain catalase?
Answers
Answer:
H2O2> H2O + O2. H2O2 is the substrate. Water and oxygen are the products.
Explanation:
Catalase is important because it is an antioxidant enzyme and as such can be used against numerous oxidative stress-related diseases as a therapeutic agent.
Which of the following is the building block of all proteins?
Question 2 options:
Amino acids
5 Carbon sugars
Phosphate groups
Nitrogen bases
Answers
Amino acids are the monomers, or the building blocks that make up all proteins.
Explain the relationship between the polarity of water and solubility.
Answers
Answer:
Polarity. ... Polarity plays a pivotal role in solubility. A polar solute will dissolve in a polar solvent whereas a non-polar solvent will dissolve in a non-polar solvent. If we put a polar solute in a non-polar solvent, it will not dissolve.
Explanation:
The relationship between the polarity of water and solubility is that the polarity of the water determines its solubility capacity.
Polarity is a property of molecules that represents the separation of electrical charges within the molecule, it can be polar or apolar.
Polarity determines whether a substance is soluble or not soluble in water.
Solubility is the measure of the ability of a certain substance to dissolve in another.
Water is a polar molecule due to the spatial arrangement of its polarized bonds.
This polarity determines that the molecules interact strongly.
The solubility of most nonpolar substances in water is very small, since the water molecule is polar, therefore, they will not be able to interact with each other.
For example, oil is not soluble in water, due to the polarity of the water molecules, which is higher than those of oil.
This is because the attraction between the particles of the nonpolar solute (oil) and the polar solvent (water) are not sufficient to cause the dissolution process.
Therefore, we can conclude that the polarity of molecules is a property that is directly related to solubility.
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Why is it warmer at the equator than at the poles?
Answers
Sea turtles dig holes on coastal
beaches and lay their eggs in the
hole. The mothers then retreat
back to the ocean. Based on this,
sea turtles could be considered
-selected.
A. K
B. S
C.
D. r
Answers
r-strategist are species that have large offsprings, but spend no time in parental care. Sea turtles can be considered exaples of r-strategist species.
What are r and k strategists?Species have different strategies to survive in different environments, reproduce, disperse, and compete. These strategies are r strategies and k strategies.
r strategist species have a high growth rate per capita, and low competition capabilities. This is why they can colonize new environments. But they can not compete with new-established species. r species are often displaced by k species.These species are mostly small-sized organisms with short life cycles. They reach sexual maturity early and have numerous descendants spending no time or energy in parental care.
k strategist species have a low growth rate per capita, but they are big competitors with the capacity of displacing other species and monopolizing the available resources.These are big-sized species that live for a long time, reaching sexual maturity in the advanced stages of their lives. They do not have numerous progenies, but they spend time parenting.
r and k strategies are closely related to reproductive strategies, habitat selection, and dispersion ability.
Considering this difference, we can assume sea turtles are r strategist.
They lay several eggs and leave them on the beach. They spend no energy in parenting. Even though they are buried, eggs are still in danger of being attacked by predators.When little turtles emerge, they have to manage to go to to the sea by themselves, being exposed to other predators.The strategy is to spend more energy in laying several eggs to increase survival probabilities, and less energy in parenting.
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Answer: D/r-selected
Explanation:
What would cause a cell to enter the cell cycle?
Answers
Richard Pyle turned to Bill Stone when he wanted to learn more about rebreathers and other diving technology.
OA. True
OB. False
Answers
Answer:
True
Explanation:
describe the following characteristics when a gene is active: o is the gene tightly or loosely wound around histones? o are there many or few methyl molecules attached to the gene? o are there many or few acetyl molecules attached to the genes associated with histones? o are there many or few mrna transcripts?
Answers
There are many or few mRNA transcripts.
When proteins referred to as transcription factors bind to two essential pieces of DNA, an enhancer and a promoter, transcription of a gene begins. Nobody understood how near they needed to be to one another for transcribing to take place considering how far apart these are.
The transcription factor binds to the promoter and then activates the RNA polymerase complex. This causes the gene to be transcribed into a messenger RNA, which is then translated into a protein in the cytoplasm. Protein translation and a physiological response happen as a result of gene transcription being activated.
By attaching to a promoter sequence in the gene's DNA, transcription factors start the process of gene expression. Gene expression is influenced by the physical makeup of DNA, which is bundled with proteins into chromatin, by regulating access to DNA.
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True or False: The Mantis Shrimp break aquarium glass. *
O True
False
Answers
1. What is the criteria necessary for organisms to be classified in the same species? (Choose all that apply)
A: offspring produced must look identical to the parents
B: must be capable of surviving in the same environmental conditions
C: offspring produced must be fertile
D: must be capable of interbreeding with one another
Answers
Answer:
c and D
Explanation:
Organisms who are capable of producing fertile offspring and can interbreed with one another are classified in the same species. Option (C) and (D) are correct.
What is classification of organism ?Classification in biology is the process of grouping species, both living and extinct, according to common traits. Taxonomy is the study of naming and categorizing living things. The word is a combination of the Greek words for arrangement and law, taxis and nomos.
A taxon is the term used to describe each group in biological categorization, or each level in the hierarchy (plural, taxa). A group of closely related organisms that can breed and generate children that can reproduce is known as a species, which is the most fundamental taxon.
Therefore, option (C) and (D) are correct option.
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RNA polymerase enzymes in general do not have proofreading functions. In contrast, DNA polymerase enzymes often do have proofreading functions. Using this information, compare the following types of viruses and indicate which would you could reasonably predict to have the LOWEST mutation rate.
a) Group 2
b) Group 3
c) Group 4
d) Group 5
Answers
It is generally agreed that RNA pol. does not require proofreading because RNA molecules are functioning copies that can tolerate minor errors. Option (d) is the right response, thus.
Ribonucleic acid (RNA), a polymeric molecule, is involved in the coding, decoding, control, and expression of genes, among other biological processes. RNA and DNA are the two different forms of nucleic acids. Lipids, proteins, carbohydrates, and nucleic acids are the four primary macromolecules necessary for all recognized forms of life. RNA and DNA both contain nucleotides as its building components, however unlike DNA, RNA exists in nature as a single strand folded over on itself. Cellular organisms convey genetic information through messenger RNA (mRNA), which uses the nitrogenous bases guanine, uracil, adenine, and cytosine.
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1. Describe the layers of Earth: crust, mantle, outer core, and inner core.
Answers
Answer:
CRUST: In geology, the crust is the outermost solid layer of a rocky planet, dwarf planet, or natural satellite.
MANTLE: A mantle is a layer within a planetary body bounded below by a core and above by a crust.
OUTER CORE: The outer core of the Earth is a plasma layer mostly composed of iron and nickel, located between the mantle and the inner core.
INNER CORE: The inner core of the Earth is the innermost geological layer on the planet. It is primarily a solid sphere with a radius of about 1,220 kilometers (758.1 mi), which is about 20% of the radius of the Earth or 70% of the radius of the Moon.
GIVE BRAINLIEST PLZ
Answer:
crust: the surface we stand and walk on and is also thin
Explanation:
mantle: plastic like molten maga
outer core: molten magma which is broken rock and metal hot enough to melt any man made object
inner core: the hottest layer and also a solid ball of compressed iron and is responsible for the earth's magnetic field