What are the 6 major roles in which a muscle can contract during a joint action? mover, antagonist, fixator, neutralizer, support, synergist.
Answers
When a muscle contracts during a joint action, it can play one of six major roles: mover, antagonist, fixator, neutralizer, support, synergist.
1. Mover: This is the muscle that directly produces the movement at the joint. It contracts concentrically (shortens) to move the joint through its range of motion.
2. Antagonist: This is the muscle that opposes the movement produced by the mover. It contracts eccentrically (lengthens) to control the movement and prevent the joint from moving too quickly or too far.
3. Fixator: This is the muscle that stabilizes the joint by holding it in place while other muscles produce movement. It contracts isometrically (without changing length) to maintain joint stability.
4. Neutralizer: This is the muscle that prevents unwanted movement at a joint caused by the actions of other muscles. It contracts isometrically to counteract the force produced by another muscle.
5. Support: This is the muscle that provides support and protection to the joint, particularly when weight is applied to it. It contracts isometrically to hold the joint in a stable position.
6. Synergist: This is the muscle that assists the mover in producing the movement at the joint. It contracts concentrically to produce additional force and help the mover overcome any resistance.
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Related Questions
a species with 16 pairs of homologs has a total of how many chromosomes in each cell?
A:58
B:32
C:16
D:8
PLS HELP
Answers
Answer:
I think B
Explanation:
Tell me if this helped
O O O O O
Which statements are true of lymph nodes? Select all that apply.
They filter lymph as it flows back to the heart.
They are packed with T-cells and B-cells.
They produce red blood cells.
They are all located in the spleen.
They can become inflamed when fighting foreign material or pathogens.
They are grouped in the neck, chest abdomen armnits and aroin
Answers
Answer:
They are packed with T-cells and B-cells.
They can become inflamed when fighting foreign material or pathogens.
Explanation:
Answer:
the g is the correct asmwer
________ is an important nutrient for the transport of oxygen in blood and in muscle tissue and in energy transformation reactions.
Answers
Iron is an important nutrient for the transport of oxygen in blood and in muscle tissue, as well as in energy transformation reactions.
Iron is a key component of hemoglobin, a protein in red blood cells that binds to oxygen and carries it throughout the body. In muscle tissue, iron is involved in the production of myoglobin, a protein that stores oxygen for use during muscle contraction.
Without sufficient iron, the body's ability to transport and deliver oxygen to tissues and organs is compromised, leading to fatigue and decreased physical performance.
Additionally, iron is involved in energy metabolism, specifically in the production of adenosine triphosphate (ATP), the molecule that fuels cellular processes.
Iron's presence is vital for maintaining proper oxygenation, energy production, and overall metabolic functions within the body.
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Which definition is the best for semipermeable membrane?
Answers
Answer:
semipermeable membrane which means molecules can move through them
What is the most inclusive level of the hierarchical classification scheme?a) domainb) phlyumc) kingdomd) genuse) species
Answers
The most inclusive level of hierarchical classification is Domain, since in that group, there are found multiple Phylum, Kingdom, Genus, and Species.
This system of classification is what we know as taxonomy, what is a tool scientists use to organize more similar species together. We can see that the main groups of the classification are the ones listed below:
Domain
Phylum
Kingdom
Class
Order
Family
Genus
Species
And we, as human beings, but also as Homo sapiens classifies us in the Eukarya domain, in the Chordata phylum, in the Animalia kingdom, in the Mammalia class, in the Primates order, in the Homindae family, in the Homo genus, and in the sapiens species.
Fluid imbalances with constant osmolarity happen when ______ fluid is lost or gained.
Answers
Fluid imbalances with constant osmolarity happen when isotonic fluid is lost or gained.
Isotonic fluid has the same osmotic pressure as the body's fluids, so when there is a loss or gain of isotonic fluid, the osmolarity (concentration of solutes) of the body's fluids remains constant. Examples of isotonic fluids in the body include blood plasma and interstitial fluid. An example of isotonic fluid loss is sweating during exercise, which can lead to dehydration if not replenished. An example of isotonic fluid gain is the infusion of normal saline during medical treatment to replenish fluid volume.
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Can you list 1-6 Energy in the form of?
Answers
1. Energy in the form of Light (Solar energy) is converted into Glucose and Oxygen by photosynthesis.
2. Glucose
3. Oxygen
4. Energy in the form of ATP molecules drives cellular functions.
5. Carbon Dioxide
6. Water
Green plants and certain other species employ a process called photosynthesis to create nutrition from carbon dioxide and water. In most cases, the green pigment chlorophyll is used in photosynthesis in plants, and oxygen is produced as a byproduct.
What is Cellular Respiration?Cellular respiration is the method by which biological fuels are converted into a form that can be oxidized in the presence of an inorganic electron acceptor, such as oxygen, to provide a significant quantity of energy that powers the large-scale synthesis of ATP. Adenosine triphosphate (ATP) is created by cellular respiration, a series of metabolic reactions and events that take place in an organism's cells in order to remove waste products after converting chemical energy from foods into ATP. As a result of the catabolic events that occur during respiration, energy is released when big molecules are broken down into smaller ones. One of the main processes a cell uses to release chemical energy to power cellular activity is respiration. Many biochemical stages, some of which are redox reactions, contribute to the overall reaction.The delayed, controlled release of energy from the succession of reactions makes cellular respiration a peculiar combustion reaction, despite the fact that it is strictly one.To learn more about Cellular Respiration, refer to:
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How does the design of your experiment control for outside factors that may affect the results?
Answers
Answer:
It separate the inner environment from the outer environment.
Explanation:
The design provides the separation of the inner environment from the outer environment which is responsible to control the outside factors which directly affects the results of the experiment. The design provides control environment which is required for the experiment. In this control environment, the environmental factors will not affect the results of the experiment.
What is the temperature requited to denature myoglobin without guanidine?What is delta S and delta H of myoglobin denaturation without guanidine?
Answers
The temperature required to denature myoglobin without guanidine is around 65-70°C.
The delta S (change in entropy) and delta H (change in enthalpy) of myoglobin denaturation without guanidine are not well-established and can vary depending on the experimental conditions.
In general, protein denaturation is a process that involves the unfolding of the protein structure and a loss of its native conformation. This can be caused by a variety of factors, including changes in temperature, pH, and the presence of denaturing agents like guanidine.
At temperatures around 65-70°C, the thermal energy is sufficient to disrupt the non-covalent bonds that stabilize the myoglobin structure, leading to denaturation. However, the exact values of delta S and delta H for this process are not well-established and can vary depending on the experimental conditions. Delta S is typically positive, indicating an increase in disorder or randomness as the protein unfolds. Delta H can be either positive or negative, depending on the relative strengths of the bonds that are broken and formed during denaturation.In summary, the temperature required to denature myoglobin without guanidine is around 65-70°C, and the values of delta S and delta H can vary depending on the experimental conditions.
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Select all of the correct answers. Which of the following can be a factor determining the species composition of communities? a. dispersal ability of species b. regional species pools c. abiotic conditions d. biotic conditions
Answers
The following factors can be determining the species composition of communities:
a. dispersal ability of species
b. regional species pools
c. abiotic conditions
d. biotic conditions
Community is defined as all the species that inhabit a specific area. These species interact with each other and with their environment. The species composition of communities is influenced by biotic and abiotic factors.
Abiotic factors include climate, temperature, precipitation, soil composition, topography, and other physical characteristics of the environment. These factors have an impact on which species can survive and thrive in a given area.
Biotic factors are living things that influence the distribution of species. Competition for resources, predation, symbiotic relationships, and other factors can impact which species are present. The regional species pool refers to the range of species that are available to colonize a particular habitat. The dispersal ability of a species can influence its ability to colonize new habitats.
Hence, the correct answer is Option A, B, C, and D.
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You can physically see the__of a trait, but not the__
Answers
1.) A. Phenotype
B. Genotype
Phenotype corresponds to the physical
appearance of a particular characteristic or
morphological form in an individual.
Example - Hair color, plant height, skin color.
On the other hand, genotype corresponds to
the genetic makeup of an individual. It is
depicted by the gene that is present in the
individual organism. Example- Genotype for
dwarf height in pea plant is 'tt', which carries
both recessive gene variants.
Thus, we can physically see the phenotype
of a trait, but not the genotype.
Advanced medical equipment can first view a baby's heartbeat near the end of which stage?
zygote
blastocyst
embryo
fetus
Answers
Baby's heartbeat near the end of embryo stage.
The heart of an embryo starts to beat from around 5–6 weeks of pregnancyFrom the eighth week the unborn child is called a fetus.What is an embryo?
After conception, baby begins a period of changes known as the embryonic stage. This stage runs from the 5th through the 10th week of pregnancy. During this stage, the baby is called an embryo. Most organs are form during this stage and later these grows further and develop.Here, C option is correct.
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The koala has a dependency relationship with eucalyptus trees.
True
False
Answers
Answer:
True
Explanation:
The koala's food source is a eucalyptus tree
Explain the role of adrenaline in the formation of emotional memories.
Answers
How does the use of a pH meter help monitor the hydrosphere?
A. by indicating whether microorganisms are living in the water
B. by indicating if there is too much sediment in the water
C. by indicating whether the water is too acidic or basic
D. by indicating if there is enough dissolved oxygen in the water
Answers
Answer:
The correct answer is - C. by indicating whether the water is too acidic or basic.
Explanation:
pH meter or pH scale is the color indicating scale to measure the acidity or basicity of the particular solution of the element. pH meter measures the hydrogen ion activity of the freshwater or saline water of the hydrosphere and if it is acidic or basic. It helps in determining if the water can be a drink or if the water body has an appropriate pH level for the organisms to live.
Thus, the correct answer is - C.
Answer:
C.
Explanation:
I know this because i had to do a test and it was right
Unicellular organisms can be
Prokaryotes
Ameoba
bacteria
all of the above
Answers
Answer:
all of the above
20 POINTS
ARE NATURAL GAS RENEWABLE OR NON-RENEWABLE?
Answers
Natural gas is non-renewable, but some alternative forms of natural gas like biomethane are renewable.
The genes for hemophilia, a condition that causes blood not to clot properly, are located on the X chromosome. It is a recessive disorder. A man normal for blood clotting and a woman who is a carrier of the condition but still clots normally have children. Show the cross and answer the questions.
Answers
The probability of a male offspring having hemophilia is 0.5 or 50%.
The probability of a female offspring being a carrier of hemophilia is 0.5 or 50%.
What is the probability of hemophilia in the offspring?Since the woman is a carrier of the hemophilia gene, she must have one normal X chromosome (X^N) and one hemophilia X chromosome (X^H). The man has two normal X chromosomes (X^NX^N).
The Punnett square for their cross would look like:
| X^N | X^H
--|--------|------
Y | X^NX^N | X^HY
--|--------|------
Y | X^NX^N | X^HY
The possible genotypes of their offspring are X^NX^N, X^NX^H, and X^HY.
The male offspring will have hemophilia if he inherits the X^H chromosome from his mother. Since the mother is a carrier and has one X^H and one X^N chromosome, there is a 50% chance of passing on the X^H chromosome to her son.
The female offspring will be a carrier of hemophilia if she inherits one X^H chromosome from her mother. There is a 50% chance of the mother passing on the X^H chromosome to her daughter, and a 50% chance of the daughter inheriting the X^N chromosome from her father.
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What is the process in which an organism makes a new organism?.
Answers
Answer: Reproduction.
In the cell cycle of typical cancer cells, mutations have most likely caused -
slower growth
O uncontrolled growth
O a failure in mitosis
O a halt in cell division
Answers
Answer:
uncontrolled growth
Explanation:
Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.
Who i Charle Darwin?
born in England in 1809, Darwin wa a ____________ lover who graduated from Chrit' Collage with a bachelor of art degree in 1831. Hi botany profeor recommend him for a ___________ poition on the __________ which would take him on the voyage of a lifetime. Darwin publihed ___________ which olidified him a the father of ________ biology. He died in 1882
Answers
Charles Darwin, who was born in England in 1809 and had a passion for the outdoors, earned his bachelor of arts degree from Christ's College in 1831. His naturalist post aboard the HMS Beagle, which would take him on a lifetime journey, was suggested by his botany professor.
The "Father of Evolution" is another appellation for him. Charles Darwin spent five years travelling to study plants, animals, and fossils. After his travels, he came to the conclusion that species that adapt to their environment live, while those that do not perish. resulting in the development of the idea of natural selection. From 1831 to 1836, Charles Darwin travelled the world on the HMS Beagle as a naturalist. Through his views and experiences, he was able to establish the idea of evolution.
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sugars, starches, and dietary fibers are examples of . a. proteins b. vitamins c. carbohydrates d. minerals
Answers
Answer:
Sugars, starches, and dietary fibers are examples of C. Carbohydrates.
The mass of an empty cylinder is 200 grams. The mass of the cylinder with the mystery liquid is 250 grams. If the volume of the mystery liquid is 100 ml, what is the density of the liquid?
Show your work
Answers
Answer:
ok,so the mass of mystery liq.+cylinder is 250g
cylinder alone is 200g
mystery liquid's mass=50g
d=m/v
50/100
=0.5g/ml
A spit is formed through wave deposition.
Please select the best answer from the choices provided
T
F
Answers
Why did I measure the initial mass of the dialysis tubes?
You
Answers
Which is a cause of drought?
A.High precipitation levels
B.low water demand
C.low precipitation levels
D.high water demand
Answers
Drought is the time period where is marked by dry conditions which is caused by the low precipitation levels. Thus, the correct option is C.
What is Drought?Drought is a prolonged dry period in the natural climatic cycle in an environment that can occur any geographic location in the world. It is a slow-onset disaster which is characterized by the lack of precipitation, resulting in a water shortage condition. Drought may cause a serious impact on the overall health, agriculture, economies, energy and the environment of an area.
Drought is mainly caused by a lack of rainfall, which causes serious water shortage. This condition can be fatal. Unlike the other extreme weather events that are more sudden, like that of earthquakes or hurricanes, droughts can happen gradually.
Therefore, the correct option is C.
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You are studying a histone complex that contains an unusually high level of modification with acetyl groups. What can you conclude about the nucleosomes containing this histone complex?.
Answers
If we are studying a histone complex that contains an unusually high level of modification with acetyl groups, then we can conclude about the nucleosomes containing this histone complex contain actively transcribed genes, i.e., they are subject to epigenetic regulation (Option E).
What is epigenetic regulation?Epigenetic regulation is the control of gene expression due to chemical modifications in the DNA and associated histones (methylation in the case of DNA, while histone modifications are diverse and they also include histone acetylation).
Therefore, with this data, we can see that epigenetic regulation also involves histone acetylation which is able to increase the transcription of genes by opening the chromatin structure in the heavily acetylated chromosome regions.
Complete question:
You are studying a histone complex that contains an unusually high level of modification with acetyl groups. What can you conclude about the nucleosomes containing this histone complex?
A. DNA is tightly bound to these histones.
B. Histone acetylation leads to degradation of histone tails and alteration of nucleosome structure.
C. They are part of heterochromatin.
D. They are most likely derived from a condensed Barr body.
E. They contain actively transcribed genes.
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PSYCHOLOGY QUESTION
What is the most effective way to handle a tantrum?
Let the child have his/her way and deal with it later in a calmer moment.
Punish the child for throwing a tantrum.
Ignore the behavior.
Answers
Answer:
I would say deal with it at a calmer moment.
Explanation:
3. What is an example of a learned behavior for puppies?
Playing with litter mates
Eating
Breathing
Panting to stay cool
Answers
Answer:
Playing with litter mates.
Explanation:
Because the other ones are instincts and things that they automatically do once they're born. Hope I helped and have a freakin' amazing day. :D
Answer:
A
Explanation:
bc all the other options are actions they are born with
iii. Eggs of silk moth are kept at the temperature below 18°C in winter.
Answers
Answer:
What is the question
Explanation:
THE EGGS WILL HATCH OUT!!
HAVE A GREAT DAYYYY!!