The skeletal muscle fibers that fatigue most easily are fast glycolytic (type iib) fibers.
What is skeletal muscle fibers ?Flexible muscle fibers that range in diameter from less than half an inch to just over three inches make up skeletal muscles. Typically, these fibers run the entire length of the muscle. You may perform a wide variety of actions because to the muscles' ability to move bones when their fibers contract (tighten).
What are the characteristics of skeletal muscle fibers?Skeletal muscle is striated, similar to cardiac muscle; it has long, thin, multinucleated fibers that are crossed is covered by tiny red and white lines that give the muscle its distinctive appearance. Connective tissue holds skeletal muscle fibers together while allowing them to communicate with blood vessels and neurons.
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The principle of uniformitarianism states that sedimentary rocks are deposited in horizontal layers. True or false?.
The principle of uniformitarianism does not state that sedimentary rocks are deposited in horizontal layers. So the statement is false.
What is the principle of uniformitarianism?Grasp Earth's history requires an understanding of uniformitarianism. However, uniformitarianism was not the dominant idea before 1830. Up until that point, experts believed in catastrophism.
According to catastrophe theory, the landforms that can be seen on Earth's surface, such as mountains, were created by sudden, drastic changes, or catastrophes. Uniformitarianism's detractors may use the term "no-analog alterations" when speaking of historical climates.
According to this theory, there may not be communities or environmental factors present on Earth now that existed in the past. In the end, James Hutton and Charles Lyell's observations and research led to a challenge to the catastrophism theory. Hutton (1726–1797) was a farmer and naturalist from Scotland.
Therefore the statement is false.
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What controls this ability to connect through the body movements and facial expressions of others?
Our volitional centre, the motor cortex, is where we impose specific facial expressions in order to convey the desired message or because the situation requires it.
What is the purpose of the motor cortex?The motor cortex's main job is to provide signals that control how the body moves. It is anterior to the central sulcus and a portion of the frontal lobe. The primary motor cortex, premotor cortex, and supplementary motor area make up this region.What kinds of motions does the motor cortex regulate?The motor cortex generates signals that are particular to movements and sends them to the muscles via spinal cord circuits and motor neurons to regulate motor behaviour. For the execution of movements to be precise, coordinated muscle activation patterns are required.learn more about motor cortex here
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after the peptide chains shaped for its function it becomes a
Answer:
it becomes a biologically active protein in its native 3D structure.
Which of the following is a human activity that can cause a freshwater resource to become hypoxic?
Use of fertilizers on farms and yards
Increased death of aquatic organisms
Decrease in algae and microorganisms
Using more plastics and paper products
How do you describe Ammonia in 4-5 words without using any of the 5 scenes so like taste smell sight things like that.
Answer:
an inorganic compound NH3
the sense of equilibrium maintains the stability of the head and body when they are motionless. the sense of equilibrium balances the head and the body when they are suddenly moved or rotated.
The sense of static equilibrium maintains the stability of the head and body when they are motionless. The sense of dynamic equilibrium balances the head and the body when they are suddenly moved or rotated.
Static equilibrium occurs when a body is at rest. There are two forces acting upon the body during static equilibrium, but they occur in opposite direction, and as a result the body remains static. For example, when an organism stands still in its position, it is acted upon by the force of gravity downwards and normal force upwards and thus remains in static equilibrium.
Dynamic equilibrium occurs when a process is going on. It detects the angular acceleration of the movement of head. In humans, the semicircular canals help in maintaining the dynamic equilibrium.
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The head of each femur fits into the deep _____________ of each os coxae, helping to stablize the joint.
The head of each femur fits into the deep acetabulum of each os coxae, helping to stabilize the joint.
Acetabulum- The concave surface of the pelvis is known as the acetabulum, sometimes known as the cotyloid cavity. The hip joint is created when the head of the femur connects to the pelvis at the acetabulum.
Os Coxae- The hip bone, also known as the os coxae, innominate bone, pelvic bone, or coxal bone, is a massive, atypical bone that is compressed in the middle and extended above and below. The ilium, ischium, and pubis are its three component components in certain animals, such as humans before puberty.
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The numbers of some receptors found in the brain may vary during the day by?
The numbers of some receptors found in the brain may vary during the day by 50%.
All organisms have a natural circadian rhythm, which is one of the key distinguishing characteristics of organisms. They are present in most biochemical and molecular processes, from transcription of genes in the cell nucleus to cell cycle regulation, and are heavily involved in physiological and behavioral mechanisms. The central circadian regulatory nucleus in mammals that responds to environmental light-dark cycles is known as the suprachiasmatic nucleus (SCN) and is located in the anterior hypothalamus of the brain. A set of clock genes form a transcription-translation feedback loop at the SCN, a key mechanism of circadian rhythms. Although the SCN is essential for the generation of mammalian biological rhythms, it is not the only nucleus in which clock genes are expressed and regulated.Therefore, the correct answer is 50%.
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______________________ constitute by far the most abundant type of dna sequences found in the human genome.
Long Interspersed Elements constitute by far the most abundant type of dna sequences found in the human genome.
long interspersed elements) are a group of non-LTR (long terminal repeat) retrotransposons that are widespread in the genome of many eukaryotes. They make up around 21.1% of the mammalian genome.
The most fundamental understanding of a gene or genome is its nucleotide sequence. Without knowing this information, no understanding of genetic function as well as evolution might be comprehensive. It should be the blueprint that includes the instructions for developing an organism.
The autonomous retrotransposon known as Long Interspersed Nuclear Element-1 (LINE-1) creates new genomic insertions by retro transposing an intermediate RNA. To protect DNA and maintain genomic integrity, greatest somatic tissues have tightly suppressed LINE-1 expression.
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How many different proteins, each composed of 6 amino acids, can be constructed using the 20 different amino acids found in proteins?
6.4 X 10⁷ different proteins, each composed of 6 amino acids, can be constructed using the 20 different amino acids found in proteins.
The majority of amino acids are represented by more than one codon because there are only 20 distinct amino acids but 64 potential codons.
The 20 different amino acids can be put together in a wide variety of ways to create a wide range of proteins.
The formula determines the number of distinct proteins made up of n numbers of amino acids = 20ⁿ
total number of proteins = 20⁶ = 6.4 X 10⁷
Hence, total number of proteins is 6.4 X 10⁷
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Mutations in ______ (or sex cells) would have no adverse health effect on an individual; however, the mutations could be passed on to offspring.
Mutations in gamete (or sex cells) would have no adverse health effect on an individual; however, the mutations could be passed on to offspring.
What is Mutation?A mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA at a particular gene locus. It creates a permanent change in gene's DNA sequence. Genetic variations are essential for humans to evolve, which is the process of change over generations. Mutations is result of errors in DNA replication during cell division, exposure to mutagens or a viral infection.
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All the following are good sources of complex carbohydrates except? oatmeal. milk. carrots. spinach.
The food that is not a good source of complex carbohydrates is milk.
What is carbohydrate?The carbohydrate is one of the six classes of food. The six classes of food that we have are; fat, carbohydrates, protein, vitamins, minerals and water. Carbohydrates are made up of glucose molecules as it is a macromolecule.
These molecules are eaten for the purpose of energy because they are broken down in the body to give glucose which is a source of energy in the body.
Thus, the food that is not a good source of complex carbohydrates is milk.
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Aspirin, like many pharmaceutical drugs, can access the cell because it is a weak acid. this occurs because:_________
Aspirin can access the cell because it can cross the membrane, as a weak acid, in its unchanged form.
Aspirin is a non-steroidal anti-inflammatory drug, commonly referred to as NSAID. Aspirin is a common drug (or a weak acid) that is used to treat minor ailments like headaches, mild fever, body aches, etc. It is also used as an anti-inflammatory drug and also to reduce the risk of blood clots after heart attacks. It can be purchased from a medical store without the prescription of a doctor.
Aspirin is not recommended for children below 18 years of age. If a child takes it with the flu or cold, it may have adverse effects. It can cause Reye's syndrome in children which can cause permanent brain injury.
Minor symptoms in the human body are caused by prostaglandins. Prostaglandins are substances produced by certain proteins, called cyclooxygenases. Aspirin inhibits this protein and thus prevents symptoms like pain, inflammation, headache, cardiovascular events, etc.
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Cells can adapt to heat stress due to a hot environment by the production of heat shock proteins. the resulting improvement in the body's ability to withstand the stress is called _____.
Answer:
heat acclimation
Explanation:
What is the arrow pointing to?
hydrogen ion
water
hydroxide ion
proton
hydronium ion
The arrow points to the hydroxide ion.
What is an ion?
An ion is a specie that is formed by the loss or gain of electrons. Thus any specie that carries a charge whether positive or negative could be called an ion. In this case, we have a system that has three ions in it. The hydrogen ions, the hydroxide ions and the hydronium ions.
As we can see, the red color stands for oxygen, the grey color stands for hydrogen. Looking at the image, we can see that the direction in which the arrow point is a specie that has only red and ash colors thus this corresponds to the hydroxide ion.
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Generally, animals cannot digest (hydrolyze) the glycosidic linkages between the glucose molecules in cellulose. how then do cows get enough nutrients from eating grass?
Microorganisms in their digestive tracts hydrolyze the cellulose to individual glucose units.
Cellulose- The stable formation of plant cell walls is greatly aided by cellulose, a hard, fibrous, and water-insoluble polysaccharide. The fibrils (bundles of microfibrils) and microfibrils (bundles of polysaccharide) made up of cellulose chains make up the plant cell wall.
Glucose- The primary form of sugar in the blood, glucose serves as the body's cells' principal source of energy. Glucose may be produced by the body from other chemicals or it can be obtained from the meals we eat. The circulation carries glucose to the cells. Insulin is one of many hormones that regulate blood glucose levels.
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Ou put some atoms together, and they share or trade some electrons. what just happened was:_____
a. a parton reaction.
b. a chemical reaction.
c. a proton reaction.
d. a quark reaction.
You put some atoms together, and they share or trade some electrons. This happens during (b) a chemical reaction.
Electrons are the subatomic particles. They along with protons and neutrons form an atom. The electrons can be found in free state or bound to the nucleus of an atom. The electrons are negatively charged particles. The charge that an electron holds is 1.60217663 × [tex]10^{-19}[/tex] coulombs.
A chemical reaction is the one where a substance called reactant undergoes some rearrangement in its molecular structure and results in the formation of another substance, called the product. There usually occurs the breakdown of old bonds and formation of new bonds in a chemical reaction.
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A manner of studying human development that stresses the fluctuations that occur constantly throughout life is referred to as the?
A manner of studying human development that stresses the fluctuations that occur constantly throughout life is referred to as the dynamic systems theory.
Human Development- The examination of the chronological events or developments that take place from fertilization to the emergence of the zygote, to the development of the human during pregnancy, from birth through adolescence, and into adulthood.
Zygote- A zygote is the result of the fusion of an egg cell and a sperm cell, sometimes referred to as a fertilized ovum/Egg. In the days after conception, the zygote quickly divides from a single cell at first.
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termites share an endosymbiotic relationship with the protozoan that live in their gut. which statements are true of this relationship? check all that apply.
Termites have a mutualistic relationship with protozoa that live in their gut. These termites get benefited by the ability of bacterial symbionts that is within the protozoa that digest cellulose.
Endomicrobia is the phylum of bacteria that lives in their gut and wood feeding cockroaches of genus Cryptocercus. These termites thrive on a diet of wood that is remarkable to biological coexistence that involves two organisms.
The symbiotic insect that live in gut breaks down the cellulose that is found in plant cell walls. Termites depends on the protozoa that provide the enzymes that can digest the wood.
Symbionts is an organisms that lives in symbiosis mainly with the smaller member of symbiotic pair.
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Describe the process of how heat transfers from within the Sun starting in the core and moving outward.
Answer:
Hope it helps
Explanation:
The energy produced through fusion in the core moves outward, first in the form of electromagnetic radiation called photons in the so-called radiative zone. Next, energy moves upward in photon heated solar gas. This type of energy transport is convection. In other words, energy is radiated out from the core first, then carried to the outer layers by convection. Energy is carried out from the core by convection first, then radiated to the outer layers.
How does mining impact the environment?
Mining has a negative impact on the environment by allowing toxic chemicals to harm wildlife and is denoted as option C.
What is Mining?This is referred to as the process in which minerals and other geologic materials are extracted from the earth with the use of special types of equipment.
It is used to extract minerals which are usually in the form of ores from a mine and contains toxic chemicals such as heavy metals e.g lead etc. It impacts the environment by allowing toxic chemicals to harm wildlife as result of sulfuric acid etc which are used to separate minerals from ore and ammonium nitrate which is used in blasting tunnels.
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The cytoplasmic membrane of prokaryotic cells plays a crucial role in transforming energy. this means that the membrane is directly involved in __
The cytoplasmic membrane of prokaryotic cells plays a crucial role in transforming energy. this means that the membrane is directly involved in converting the energy of sunlight or food into ATP.
What is prokaryotic cell?A prokaryotic cell is a type of cell that does not have a true nucleus or membrane-bound organelles. Organisms within the domains Bacteria and Archaea are based on the prokaryotic cell, while all other forms of life are eukaryotic.
What are 3 examples of prokaryotic cells?Prokaryotes are single celled, microscopic entities. They neither have specialized organelles nor a prominent nucleus with a membrane. Examples of prokaryotes include cyanobacteria, E. coli, mycoplasma etc.
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The maintenance of constant body temperature would be difficult without the actions of the?
The maintenance of constant body temperature would be difficult without the actions of the apocrine glands. Sweat glands are located in apocrine glands on the skin and eyelid. The armpits, groyne, and region surrounding the breast nipples contain the majority of apocrine glands in the epidermis.
The skin has apocrine glands, which produce odor-producing secretions. Apocrine glands enter the hair follicle and exit at the skin's surface. Apocrine glands grow in regions with a lot of hair follicles, like the scalp, armpits, and groyne. The role of apocrine glands in many species is typically viewed as smell glands involved in the synthesis of pheromones.
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Digestion must occur before the effects of alcohol can be felt. question 17 options:
a. true
b. false
It is false that digestion must occur before the effects of alcohol can be felt.
Alcohol is the beverage that contains ethanol and is generally produced by the fermentation of certain substances. Alcohol is a substance that does not require digestion inside the body. It is directly absorbed from the stomach into the blood. Hence, the effects of alcohol can be felt even without digestion.
Digestion is the process of breakdown of food inside the living organism's body. This is essential to release energy from the food, necessary to complete all the processes of the body. The digestion begins from the mouth itself.
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Which factor is most instrumental to the optimal health and performance of the digestive system?
Adequate sleep is most instrumental to the optimal health and performance of the digestive system.
How sleep affect digestive system ?Stress that affects the intestines can increase as a result of lack of sleep.
Bloating, inflammation, stomach pains, food allergies, and alterations to the gut flora are just a few of the problems that can result from this.
Digestive system :The digestive system is made up of the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus. Salivary glands, the liver, gallbladder, and the pancreas are also included since they produce digestive juices and enzymes that aid the body in breaking down food and liquids.
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Stimulus outside normal limits triggers a response that opposes or negates the stimulus is called _____
Stimulus outside normal limits triggers a response that opposes or negates the stimulus is called negative feedback
A negative feedback is the result or product of a reaction associated with a decrease in the reaction that caused it.
Some of the characteristics of negative feedback are the followings:
Attempts to maintain a system at a point of equilibrium.It is common in human biological processes.It can occur in natural systems, social systems and objects.It usually stops without the intervention of external factors.A few examples of negative feedback are:
The regulation of body temperature.The regulation of the pH in the blood.The regulation of blood pressure.What is a stimulus?A stimulus is something that triggers a reaction in the human being generating a positive or negative response, the stimulus can be internal or external.
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Blood vessels become _______________ and more _________________ enter the damaged tissue.
Blood vessels become wider (dilate), allowing and more blood to enter the damaged tissue.
What are blood vessels and its function?Blood is delivered to human tissues by blood arteries, which act as conduits or channels. Two tube-like closed systems comprised of the vessels start and stop at the heart. Blood is transported from the right ventricle to the lungs and back to the left atrium by one system, the pulmonary arteries.
What three types of blood vessels are there?Over 60,000 miles of arteries, veins, and capillaries make up this extensive network of blood vessels. That is long enough to do two additional world trips. Your body's blood vessels continuously carry blood.
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In dna replication what is the difference between the leading and lagging strands.
Answer:The major difference between a lagging and leading strand is that the lagging strand replicates discontinuously forming short fragments, whereas the leading strand replicates continuously
Explanation:
How is vinegar naturally produced?
a. by yeasts feeding on the sugar in grains or fruit
b. by yeasts feeding on acetic acid
c. by acetobacter feeding on yeasts
d. by acetobacter feeding on alcohol
Answer:
B i got it right on mine but yet again it could be different for you but I would say B
Which population would be most likely to undergo relatively rapid allopatric speciation?
Allopatric speciation would be fastest in the herd of wild horses.
What is allopatric speciation?
When groups of a same species are geographically separated from one another, allopatric speciation takes place. Populations gradually change into new species through a process called speciation.
A herd of wild horses was shipped from Wyoming to a little desert island off the coast of California that had never before had any. After then, no more horses arrive at the island. The new population is tiny (reproductively) and geographically separated from neighboring populations, both of which tend to favor allopatric speciation.
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