Answer:
The scenario that can be considered an example of a negative feedback loop is increase in platelet production to help increase blood clotting (option d).
Explanation:
Negative feedback loop is what occurs when a change occurs in the body, producing a response that decreases or stops that change, with the intention of maintaining homeostasis.
When there is a wound that produces bleeding, a series of mechanisms are activated, the coagulation cascade, which promotes the release of factors that allow the formation of clots. The increased release of platelets implies negative feedback because it helps to stop the change that occurs in the body, the loss of blood, through the formation of clots.
One thing that can cause confusion is the fact that this response also involves positive, though limited, feedback that promotes the production of clotting factors and platelets to increase clot formation. What really happens is that the positive feedback promotes the general feedback, which is the negative feedback: clot formation to stop the bleeding, restoring homeostasis.
The other options are not correct because:
a. Increase in blood pressure to reduce heart rate is not possible.
b. In the fight and flight response the hormones involved are cortisol and adrenaline, not testosterone.
c. Increased oxytocin in response to uterine contractions is positive feedback.
Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin—responsible for capturing green light, phycocyanin—responsible for capturing orange-red light, and allophycocyanin—responsible for capturing red light.
Since light can only penetrate to certain depths in oceans (figure 1), phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll.
Explain the relationship between chlorophyll absorption and wavelength.
In addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment types. Justify the claim that this species is better adapted to environmental changes than the cyanobacteria described above. Provide reasoning that explains this claim.
Answer:
since chlorophyll are only able to absorb the red, then the relationship is that the shorter the wavelength the better the chlorophyll will absorb the light for the bacteria. the second species will therefore be able to absorb more different wavelengths of light to turn it into the red light that can then be absorbed, in case the wavelengths of light that reach the bacteria in the ocean changed for some reason
How many moles of iron will be made from 13.54 moles of carbon?
Answer:
0.01790670606142 that's your answer
increased oxidative stress with aging reduces chondrocyte survival: correlation with intracellular glutathione levels
The role of oxidative pressure in mediating cell dying in chondrocytes remoted from the articular cartilage of glutathione levels and old grownup human tissue donors.
Cell dying prompted through the oxidant becomes evaluated within the alginate bead way of life system by the use of fluorescent probes to assess membrane integrity. generation of peroxynitrite by way of the decomposition of SIN-1 became shown by fantastic immunostaining of dealt with cells for 3-nitrotyrosine.
Evidence that multiplied oxidative stress with growing older makes chondrocytes greater liable to oxidant-mediated mobile demise through the dysregulation of the glutathione antioxidant machine.
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lewis has three plants. he wants to know if giving a plant water, liquid fertilizer, or soap changes how it grows. which experiment should he do?
lewis has three plants. he wants to know if giving a plant water, liquid fertilizer or soap changes the way it grows. the experiment he must do is variable, being able to have plants with and without water, fertilizer and soap.
What is the dependent variable in this experiment what kind of soil is best for plant growth?The dependent variable is plant growth. The variable that affects the dependent variable is called the independent variable. In the plant experiment, the independent variable can be fertilizer – some plants will receive fertilizer, others will not.
With this information, we can conclude that the experiment he must do is variable, being able to have plants with and without water, fertilizer and soap.
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american society of hematology 2020 guidelines for management of venous thromboembolism: treatment of deep vein thrombosis and pulmonary embolism
Deep vein thrombosis (DVT), pulmonary embolism (PE), and other types of venous thromboembolism (VTE) affect 1 to 2 people per 1000 people yearly, or 300 000 to 600 000 cases in the United States.
Strong recommendations include using thrombolytic therapy for patients with PE and hemodynamic compromise, choosing an INR range of 2.0 to 3.0 for patients with VTE who use a vitamin K antagonist (VKA) for secondary prevention, and using indefinite anticoagulation for patients with recurrent unprovoked VTE. For uncomplicated DVT and PE at low risk for complications, conditional recommendations include the preference for home treatment over hospital-based treatment, and the preference for direct oral anticoagulants over VKA for primary treatment of VTE.
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Explain Your Reasoning Place an "x" in the appropriate box if the characteristic could describe science, pseudoscience, or both. What might this tell you about the relationship between science and
pseudoscience? Explain your reasoning.
Pseudoscience may sometimes permit personal opinions as evidence.
What is pseudoscience?The term pseudoscience refers to the reliance on logical explanations rather than empiricism to explain the observations in the universe. We know that science is empirical and results must be reproducible.
It is important to emphasize that the difference between science and pseudoscience is that science has an emphasis on empiricism and experiments are the only way that we could validate. Most of the earliest approaches to the study of the universe depended on pseudoscience.
The study of the natural world is the concern of both science and pseudoscience. The explanations in pseudoscience may sound logical but the results generated by science can be tested by others. The explanations of science can be proven false.
Lastly pseudoscience may sometimes permit personal opinions as evidence.
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which list correctly arranges the structures of a motor neuron with respect to the order in which they receive information, from first to last?
The order of arrangement of the structure of a motor neuron is; dendrites, the cell body, axon, terminal branches of the axon.
What are motor neurons?The term motor neuron refers to the cell that can be found in the central nervous system that has the function of facilitating movement of the hands and feet as well as speech. Recall that the central nervous system consists of the brain and the spinal cord.
Thus, information is based from the brain to the motor neurons and then an action could be carried out effectively. The order of arrangement of the structure of a motor neuron is; dendrites, the cell body, axon, terminal branches of the axon.
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a firefighter wakes in the middle of the night to the sound of an alarm. it is likely that her have released epinephrine and norepinephrine. please choose the correct answer from the following choices, and then select the submit answer button. answer choices neural networks adrenal glands somatic and parasympathetic nervous systems reflex pathways
It is likely that her adrenal glands have released epinephrine and norepinephrine and is denoted as option B.
What is Adrenal gland?This is described as a small triangular-shaped glands which are located on top of both kidneys. They are responsible for various metabolic processes in the body due to their release of different types of substances.
The substances include epinephrine and norepinephrine and they act as a neurotransmitter and a hormone. They also play an important role in the body's fight-or-flight response as a result of the firefighter alarm which means a likely fire incident.
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Which policy design will BEST ensure that brine shrimp will continue to live in the Great Salt Lake?
The Marine Protection, Research, and San.ctuaries Act is the legal framework that will most effectively guarantee that brine shrimp will continue to exist in the Great Salt Lake.
Describe a policy:This is referred to as a plan or set of rules that are established by people or organizations in order to accomplish long-term objectives.
By guaranteeing that there is no population from diverse sources, the Marine Protection, Research, and San/ctuaries Act was established to safeguard the marine environment.
The brine shri/mp, a representative of an organism that lives in the salt\ water environment, may migrate from the Great Salt Lake to more suitable locations as it becomes contaminated.
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The diagram shows a model of an atom. The model contains three
different subatomic particles. Particles X and Y are inside the
nucleus, and particle Z is outside of the nucleus.
Model of an Atom
Which statements best describe the charges on the particles in this
model?
A Both particles X and Y have a positive charge.
Particle Z has a negative charge.
B. Both particles X and Y have a negative charge.
Particle Z has a positive charge.
C Either particle X or particle Y has a positive charge.
Particle Z has a negative charge.
D Either particle X or particle Y has a negative charge.
Particle Z has a positive charge.
In the Bohr atomic model, protons (+ charge) and neutrons (0 charge) compose the nucleus. Electrons (- charge) are circulating in orbits around the nucleus. C) Either particle X or particle Y has a positive charge. Particle Z has a negative charge.
What is the Bohr atom model?The atom Bohr model is a representation of atoms composition of and the interaction between these elements.
The model proposes a nucleus composed of neutrons and protons, and orbits around the nucleus with electrons on them.
There are different orbits around the nucleus, each with a certain energy. Each of these orbits is then the energy level. Electrons can gain or lose energy and jump from one level to another.
The model states that
Protons are particles with a positive charge occupying a small volume of the atom's size. Protons contain most of the atomic mass. Neutrons are particles that have no charge. Electrons are particles with negative charges circulating in orbits around the nucleus.There can be many orbits, each with a different size and energy level.The energy level is proportional to the orbit size. Each orbit has a different number of electrons. As electrons gain or lose energy, they move from one orbit to another.
In the exposed model,
X and Y - Protons and NeutronsZ - ElectronsNow, let us analyze the options,
A) Both particles X and Y have a positive charge. Particle Z has a negative charge.NO. X and Y do not have a positive charge, only one of them has.
B) Both particles X and Y have a negative charge. Particle Z has a positive charge.
NO. X and Y are positive and neutral, while Z is negative.
C) Either particle X or particle Y has a positive charge. Particle Z has a negative charge.
YES. Either X or Y are representing protons and neutrons, with positive and neutral charges, respectively. Z represents electrons with a negative charge.
D) Either particle X or particle Y has a negative charge. Particle Z has a positive charge.
NO. X and Y can have a positive or neutral charge. Z only negative charge.
According to this model description, the correct option is C).
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The abdominopelvic quadrants are formed by passing one horizontal and one vertical line through the.
The abdominopelvic quadrants are formed by passing one horizontal and one vertical line through the Umbilicus.
Abdominopelvic cavity :The pelvic cavity and the abdominal cavity together make up the abdominopelvic cavity. The stomach, liver, pancreas, spleen, gallbladder, kidneys, small intestine, and the majority of the large intestine are all located in the abdominal cavity, which is the upper part of the body.
The right upper, right lower, left upper, and left lower quadrants are the four quadrants of the abdomen.
What are the abdominopelvic regions of the body?The umbilical region, hypogastric region, epigastric region, right and left iliac regions, right and left lumbar regions, right and left hypochondriac regions, and umbilical region are the nine abdominopelvic regions.
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Explain why scientists probably used pcr when they prepared the dna for your experiment.
ScientistsScientists probably used PCR when preparing the DNA for this experiment so they could start with a small sample of DNA and produce large quantities of the desired DNA strands from there.
Why is PCR beneficial?A specific DNA fragment can be amplified quickly using the highly sensitive PCR method. Gene sequences can be detected and identified using visual methods based on size and charge because PCR generates billions of copies of a particular DNA fragment or gene.
DNA polymerase is an essential component for PCR due to its key role in synthesizing new DNA strands.
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218k reber, a burki, n vizcaino reves, et al.: biomechanical evaluation of the stabilizing function of the atlantoaxial ligaments under shear loading: a canine cadaveric study. vet surg. 42:918-923 2013 24117887
ROM grew similarly and gradually during the test. The transsection of the alar ligaments resulted in the greatest rise.
To stabilise the atlantoaxial joint under shear pressure, the alar ligaments appear to be the most significant ligamentous structures.
What is Biomechanical evaluation ?The evaluation of your body's full kinetic chain, which includes your legs, hips, and spine, is part of the biomechanical process. The angular relationships, range of motion, and dynamic interactions are all included.
An evaluation of the lower limbs' anatomy, alignment, strengths, and weaknesses is part of the biomechanical process. The foot, which carries our body weight as we walk every day, is a complicated structure made up of 28 separate bones, 214 ligaments, and 38 muscles.Learn more about Biomechanical evaluation here:
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the most abundant protein in the human body is (fill in the blank) ; it provides (fill in the blank). quizlet
Collagen is the most abundant protein in the human body.
Collagen is an essential component of all of our body's connective tissues. Our bones, skin, hair, joints, and other tissues all contain collagen. The skin may move, stretch, and recoil into shape with the help of collagen. The body contains collagen, which holds the cells together.
Without collagen, the body would disintegrate into nothing. A crucial structural protein of the numerous connective tissues of animals is collagen. Mammals produce a lot of protein, which accounts for 25 to 35 percent of the protein in the entire body.
Most collagen is found as elongated fibrils in fibrous tissues such tendons, ligaments, and skin.
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The __________ sends sound vibrations to the inner ear. a. malleus b. stapes c. incus d. tympanum please select the best answer from the choices provided a b c d
Answer: malleus
Explanation:
consider a mutation that alters an organism's traits so that it increases the likelihood of survival and reproduction of the organism. such a mutation may become more common in the population over time due to a process calle
Genetic drift is such type of mutation that may become more common in the population and over time due to the process
Genetic drift is describes as the random fluctuations in the numbers of the gene variants in a population. Genetic drift may takes place when the occurrence of the variant forms of the gene, called as alleles, increases and also decreases by chance over time. These variations is the presence of alleles are to be measured as the changes in allele frequencies. In the population, the different of alleles that create the coat color are equally distributed. for example A disease which comes into the rabbit population and kills the 98 of the rabbits. The only rabbits that are is left are red and grey rabbits, simply by the chance. The genes have thus called “drifted” from 6 alleles to only 2.
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Match the following vocabulary terms to their correct definitions.
Does NOT contain carbon.
A. A worker for the Dept. of Wildlife Resources counted how man y deer he saw on 5 different plots of land on
November 15. Graph the following information in a BAR graph. Label and number the x and y-axis.
Plot
A
B
C₁
D
E
# of deer
36
32
12
20
24
1. What is the independent variable?
2. What is the dependent variable?
3. What is an appropriate title?
Why do we eat? QER needs q e and r
then 1 - 3 sentence claim
need long answers
the question is biology based not regularly based
We stay in a international of plenty, with greater than sufficient meals to pick out from. Wander down any grocery shop aisle and surprise on the alternatives in each category.It''s now no longer as easy as you may think.
We pick out ingredients for plenty motives except hunger. (If consuming became as easy as setting fueloline in a car, we''d haven't any weight problems epidemic withinside the United States!) Personal taste, own circle of relatives preferences, cultural impacts, emotional motives, fitness concerns, societal pressures, convenience, cost, and range and amount of the to be had services all come into play while we pick out what to eat.
The United States enjoys one of the maximum ample meals elements withinside the international. But with abundance comes overeating and, ultimately, the scary weight benefit and associated fitness problems. While surveys record that we''re greater interested by weight loss program and fitness than ever before, the numbers of obese and overweight Americans inform a unique story.
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3 trials of doing the egg drop with these materials: tape measure tape, masking cotton swabs eggs, raw cups balloons cotton balls newspaper – or magazines tissues
There are many constraints you can put on your egg drop challenge. Size, weight, materials, use of parachutes , the materials are tape measure tape.
What are the major components of an egg ?Some of the components of egg include the shell is a symmetrical, oval shape, seamless texture, and their lightweight, fragile made up of Calcium Carbonate (CaCO3), Semipermeable Pores which allow carbon dioxide pass out of the shell, exchange of gases occur.
The Bloom of shell is porous shield for protection, the Cuticle is a natural protective coating of the entire shell. second component are inner and outer membrane which is a thin, amino-acid rich layers provide protection.
The outer membrane is translucent, film-like gel like structure, inner egg membrane is the second translucent protein barrier, outer membrane adheres to the eggshell, the inner membrane surrounds the albumen of the egg.
Albumen or egg white mainly provide protection of the yolk as yolk is the figurative center of a healthy egg, serve as a shield to the yolk from movement and damage.
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Select the correct answer.
Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body?
A.
Human liver cells make proteins that promote homeostasis that neurons do not.
B.
Different species of bacteria have different shapes and structures to their cells.
C.
The DNA in the cell nucleus of chimpanzees and humans are 98% identical.
D.
Prokaryotes do not have nuclei, but they can still carry out the basic functions of life.
Answer:Option A.
Explanation:
Natural selection and evolution are two terms that are sometimes confused, even by first year biology students. What is the relation between natural selection and evolution?.
Answer:
natural selection is a mechanism of evolution.
Explanation:
animals that adapt to their environment can survive and pass on the genes to their offspring
Hi there!
-Natural selection is a mechanism (or involved/a part) of evolution.
- Natural selection results in a change in the traits of people/indivduals in a population over the course of generations. Darwin proposed that through the process of natural selection, the physical or behavioral traits of organisms lead to increased survival or reproduction.
- This happens in a particular environment and becomes common within their population, while less favorable traits are lost.
- The changes building up and accumulating within populations via natural selection can lead to the development of new species.
Additional help (that helped me get 10/10 on this same quiz) was Quizlet. Just look up Chapter 11 Learning Guide for natural selection.
Hope this helps! Have a good day! :)
What structures do all of these cells have in common?
Answer: All have a cytoplasam, plasma membrane, DNA, and ribosomes
why do seeds need to be planted
Without seeds, there would be no plants and Earth would be a barren place that would not support the many forms of life that surround us every day.
prions are infectious particles that can cause normal proteins to assume a misfolded shape. when the proteins assume an abnormal three- dimensional shape, they:
Prions are infectious particles that can cause normal proteins to assume a misfolded shape and when the proteins assume an abnormal 3D shape, they lose their functions.
What is protein fold?After synthesis, proteins are finally folded into specific 3D structures, which is fundamental to carrying out their functions in the cells.
In conclusion, prions are infectious particles that can cause normal proteins to assume a misfolded shape and when the proteins assume an abnormal 3D shape, they lose their functions.
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Why does a prokaryotic cell have a cell wall
Answer:
Most prokaryotes have a cell wall outside the plasma membrane. The cell wall functions as a protective layer, and it is responsible for the organism’s shape. Some bacterial species have a capsule outside the cell wall.
Explanation:
One primary advantage of light microscopy over electron microscopy is that ________.
wilhelm et al. (2018) constraints on the metabolic activity of microorganisms in atacama surface soils inferred from refractory biomarkers: implications for martian habitability and biomarker detection. astrobiology, 19 (7). doi: 10.1089/ast.2017.1705
One of the greatest environmental obstacles to microbial viability is dryness. In order to objectively assess long-term habitability models of Mars and better define the environmental limits of life on Earth, it is important to understand the threshold of microbial tolerance to extreme dryness.
Implications for the habitability of Mars and the search for biomarkersThe Atacama Desert's hyperarid surface soils, which resemble Mars and receive only a few millimeters of precipitation per decade, were compared to biologically active soils a few hundred kilometers away that receive two to five times as much precipitation to measure biomolecular proxies for microbial adaptation and growth. With increased dryness, the diversity and amount of lipids and other biomolecules reduced.Only the wetter surface soils included cyclopropane fatty acids (CFAs), which are a sign of bacterial development and an adaptive response to environmental stress. All of our findings indicate that there is little to no in situ microbial growth in the driest surface soils of the Atacama, and that whatever metabolic activity there is likely restricted to cellular maintenance and repair. Our findings contribute to mounting evidence that the driest surface soils in the Atacama represent a threshold for long-term habitability (i.e., growth and reproduction). These findings limit the possibility of existent life existing on Mars' surface, which is 100–1000 times drier than the driest areas of the Atacama.learn more about biomarker here
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IV - amount of water
DV - Rate of photosynthesis
What’s the hypothesis
Answer:
[tex]H_{0}[/tex]: The amount of water will have no effect on the rate of photosynthesis.
[tex]H_{1}[/tex]: A larger amount of water will increase the rate of photosynthesis.
[tex]H_{0}[/tex] means null hypothesis, a hypothesis where the independent variable, in this case, the amount of water, has no effect on the dependent variable.
who is the first true experiment and in which century
The first formal psychological experiment was carried out by Wundt, who attempted to gauge the speed of cognition by timing how long it took test subjects to reach a conclusion.
What was the first true experiment in psychology?The first formal psychological experiment was carried out by Wundt, who attempted to gauge the speed of cognition by timing how long it took test subjects to reach a conclusion.
The first genuine experimental study with a direct connection to physical activity and sports psychology was published by Norman Triplett. His interest in how to direct competition between two people affects performance served as the basis for his study.
A real experiment is one in which every effort is made to maintain control over all factors aside from the one being studied. This kind of control is frequently simpler to implement in a lab environment. As a result, genuine experiments have frequently been mistaken for laboratory studies.
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