Treppe is a medical name for the gradually intensifying contractions that occur when a sequence of identical stimuli are applied to a muscle at rest.
Thus, This means that if you continually activate a muscle at the same intensity, the muscle will eventually become stronger as a result of an increase in calcium availability brought on by the constant stimulation and stimuli.
When the heart rate increases, this treppe effect occurs in the heart muscle to raise the myocardial tension.
Most animals have muscles, which are soft tissues that provide force and motion. Actin and myosin, two essential proteins, are the major proteins found in muscle filaments and treppe.
Thus, Treppe is a medical name for the gradually intensifying contractions that occur when a sequence of identical stimuli are applied to a muscle at rest.
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What is the definition for vacuole and Chlorophyll?
Answer:
Some bacteria perform photosynthesis, but their chlorophyll is not relegated to an organelle. Vacuoles. Vacuoles are membrane-bound sacs that function
sorry if it is not right
how are messages carried throughout the human body from the brain to the nervous system
Explain what are co-evolved mutations and how can they help with predicting protein structures?
Answer:
The correct answer is as follows.
Explanation:
Coevolution is a phenomena where two related species evolve at the same time since they share a close relation. For instance, the relation between a predator as its prey or a virus and its hostage. This phenomena helps to predict protein structures, since by revealing the higher order structure of a protein we can predict the structure of other protein that have coevolved with it. This has been used in several studies, such as one 2015 study of Pandini and collaborators entitled "Coevolved Mutations Reveal Distinct Architectures for Two Core Proteins in the Bacterial Flagellar Motor".
What is the flexibility of spider silk determined by the structure of its molecules
The flexibility of spider silk determined by the structure of its molecules is quite strong.
The components that make up spider silk are what give it its flexibility. Proteins called fibroins, which are made up of amino acids organised in a certain sequence, make up spider silk. The arrangement of amino acids in fibroin proteins results in a helical structure, which is held together by hydrogen bonds between the amino acids.
The fibroin protein chain's exact arrangement of amino acids and hydrogen bonds produces a special blend of strength and flexibility. The silk is flexible enough to stretch and absorb energy without breaking and robust enough to resist significant stress. Spider silk is a fantastic material for many uses, including clothes, medical equipment, and even bulletproof vests, thanks to its unique mix of qualities.
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a.
84. Neptune is very similar in size and color to
Jupiter.
b. Saturn.
c. Uranüs.
d. Earth.
HELP ME FAST PLZ LOLZ!!
Answer:
R r
R RR Rr
r Rr rr
Explanation:
Punnett squares are used by biologists to determine the probability of an offspring having a particular genotype.
Purpose of physical change
Answer:
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
Explanation:
......
if an Object has a density of 0.9 g/cm^3 and you put it into water with the flow or sink
THIS IS FOR THE PEOPLE THAT NEED HELP W/ THIS because I found it a real strugle lol
Cells and the Structure of Life Lab Report
Instructions: Complete the Cells and the Structure of Life virtual lab. Record your observations in the lab report below. You will submit your completed report.
Name and Title:
Leah Ruiz
Mrs Pankey
Friday 5th 2021
Cells and the Structure of Life Lab
Objective(s):
In your own words, what was the purpose of the lab?
The purpose of this lab was to explain, show, and gather evidence of the cell theory.
Procedure:
Investigate each of the three components of cell theory to investigate from the corkboard in the virtual lab:
All organisms are composed of cells.
Cells come from existing cells.
Cells are the basic unit of life.
For each section, record your observations below.
Complete your report and submit it for grading.
Data and Observations:
Investigation: All organisms are composed of cells.
What is the main function of each part of the compound microscope?
Part
Function
Eye piece
the eye piece the lens that that user looks through to actually visualise the sample.
Ocular lens
the ocular lens is another name for the eye piece
Objective lenses
the objective lenses are the lenses closest to the sample, and brings the light to the sample. Standard microscope objective lenses have magnification ranging from 4x to 100x
Slide
the slide is a piece of glass where the sample has been deposited. E.g. it could be fixed tissue or live cells.
Cover slip
A cover slip is a smaller piece of glass that covers the sample, protecting it from damage or drying out
Stage
the stage is the part of the microscope that the sample being viewed sits on
Focusing dials
the focusing dial allows the user to adjust the focus of the sample, making visible and sharp
Light
the light is used to illuminate the specimen so that fine details can be deciphered.
Condenser lens
the condenser lens focuses the light source, collecting all the light from the source and redirecing it to a specific point (i.e. the sample)
Observe each specimen under the microscope, and record a description about its appearance.
Specimen Type
Description
Plant cell
The cell is from an onion and showing a divided cell structure.
Animal cell
The animal cell shows red blood cells.
Bacteria cell
The bacteria cells are in the shape of a rod called a rod shape.
Investigation: Cells come from existing cells.
Observe the two flasks, and record information about their appearance.
Day
Flask with open (broken) neck
Flask with intact neck
1
nothing happens
nothing happens
2
The broth in the open flask becomes dinner
The particles go in to the little tube
3
clumps of microorganisms begin to appear on day 3 on the open flask
more go in the tube
4
the clumps of microorganisms increase on day 4
they keep on stacking in the tube
5
clumps increase subsequently on day 5
a bunch of particles are in the tube
Investigation: Cells are the basic unit of life.
Observe the two petri dishes, and record information about their appearance.
Day
Petri dish (on left) containing agar plus nutrients
Petri dish (on right) containing agar without nutrients
1
Nothing happen
Nothing happen
2
Nothing happen
Nothing happen
3
The left one got more bacteria
the bacteria started to go away
4
More bacteria started growing
More bacteria started going away
5
It got more bacteria.
Bacteria kept going away
Conclusion:
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.
How did scientists discover that all living things are made of cells?
Around 1850, Virchow saw cells dividing and added that living cells arise only from other living cells. These ideas led to cell theory, which states that all organisms are made of cells, all life functions occur in cells, and all cells come from other cells.
How did Pasteur’s experiment with the flasks help disprove the idea that living things could just appear or come from nonliving things like water and air?
The end of the revolutionary period of the theory of abiogenesis and biogenesis was after the appearance of Louis Pasteur (1822-1895), a chemist who was very interested in chemical changes that occurred during the fermentation process of wine.
Why are nutrients needed for living things? Describe the difference between living and nonliving things.
all living things need water, and some source of food. The difference between a living and non-living thing is that one need water and other nutrients to keep it alive whereas non living things do not.
THE TEACHER ALSO GAVE ME A 100 for this. yw.
Answer:
thank you
your the best i passed
Answer:
TYSMMMMMM
Explanation:
IVE BEEN STUCK ON THIS
Oil and water can form a colloid if treated with an emulsifying agent, such as a detergent. Can the
detergent help to remove the oil from the birds?
What are thing kyanite is used to make?
Answer:Uses. Kyanite is used primarily in refractory and ceramic products, including porcelain plumbing and dishware. It is also used in electronics, electrical insulators and abrasives.
Which of the following statements about chemiosmosis is NOT true?Hydrogen ions move down the concentration gradient.It is caused by a higher concentration of protons on one side of the membrane.Energy is used as protons pass through the ATP Synthase.A net of 38 ATP is produced from each glucose molecule.
Chemiosmosis is the process of moving ions, for example, protons, through a semipermeable membrane, this movement creates an electrochemical gradient. This gradient is used as energy for the synthesis of ATP during the process of oxidative phosphorylation.
Of the given options, the statement that is not true regarding chemiosmosis is the last one "A net of 38 ATP is produced from each glucose molecule."
why is the cell membrane said to be a semipermeable membrane
Explanation:
Because water can easy go from one side to the other of the cell membrane.
Answer:
I think the term semipermeable means to allow some substances through and prevent others from passing. The cell membrane is semipermeable because it prevents harmful toxins from entering and damaging the cell. I tried my best It's been a while since I studied that but I hope it helped!
What does the cell do when not in the mitotic phase?
A cell is in the interphase when it is not in the mitotic phase. The three stages of interphase—G1, S, and G2—are the time between cell divisions in the cell cycle. The cell is actively growing and carrying out its regular functions when in interphase.
The cell is preparing for DNA synthesis, which will take place during the S phase, and during the G1 phase. The cell creates DNA during the S phase, the genetic material that contains the instructions required to create and maintain the cell.
The cell enters the G2 phase following the S phase, where it finishes making all necessary preparations for cell division. The cell grows and develops during the interphase, and it is also during this time that any possible DNA damage can be repaired.
When a cell is prepared to divide, it moves into the mitotic phase, where it divides into two daughter cells.
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why a patient is put on heart lung machine during such an operation
During an El Niño event, surface water temperatures increase along the west coast of South America. As a result, the region might experience:
A. decreased air temperature and increased precipitation.
B. decreased air temperature and decreased precipitation.
C. increased air temperature and increased precipitation.
D. increased air temperature and decreased precipitation.
During an El Niño event, surface water temperatures increase along the west coast of South America. This warming of the ocean has significant impacts on the surrounding climate, leading to changes in air temperature and precipitation patterns. Increased air temperature and increased precipitation (option c).
1. El Niño is characterized by the warming of surface waters in the eastern Pacific Ocean, particularly along the coast of South America. This warming occurs when trade winds weaken, allowing warm water from the western Pacific to flow eastward.
2. The increased surface water temperatures have a direct effect on the air temperature in the region. Warmer ocean temperatures lead to warmer air temperatures, resulting in increased atmospheric heat.
3. As the air temperature rises, it can hold more moisture, leading to increased evaporation from the ocean surface. This increased moisture in the atmosphere contributes to higher levels of precipitation in the affected region.
4. Therefore, during an El Niño event, the west coast of South America experiences increased air temperature and increased precipitation, as stated in option C.
It is important to note that El Niño can have variable effects in different parts of the world, but specifically for the west coast of South America, the described changes in air temperature and precipitation hold true.
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7. Write to Learn Answer the question in the
mystery clue below. Remember that
honeycreepers eat different kinds of foods.
How might the sources of food differ from
island to island?
Answer:
The sources of food for honeycreepers may differ from island to island due to the different types of vegetation and insects that are available. The availability of food sources will depend on the climate, terrain, and the type of vegetation present on each island. For example, some islands may have a wide variety of plants, insects, and fruits, while other islands may be more limited in the types of food sources available to honeycreepers.
Explanation:
which of the following summarizes the endocrine system's role?
- to carry nerve impulses throughout the body in order to maintain homeostasis
- to receive information about what is happening inside and outside of the body
- to regulate body activities (like growth and immunity) by sending chemical messages
- to send electrical messages about how the body should respond to stimuli
Answer:
To regulate body activities (like growth and immunity) by sending chemical messages
Explanation:
I'm not 100% sure about this, but this seems most likely after a quick internet search.
I hope this helps, but you might want to double-check this.
Which statement best describes heating by radiation
Answer:
did you get the answer yet
Answer:
Sunlight travels through space without the aid of fluids or solids.
Explanation:
In an experiment, a researcher measures the mass of an object and gets the following results: 6.08 g, 6.07 g, 6.13 g, 6.09 g. The actual mass of the object is known to be 6.10 g. Are these results are? A.accurate B.precise C.accurate and precise D.neither accurate nor precise
Considering the definition of accuracy adn precision, the results are accurate and precise.
Definition of accuracy and precisionAccuracy is the degree of closeness of the value of the measurements with respect to the real value of the magnitude. The closer a measurement is to the true value, the more accurate it is.
On the other hand, precision is defined as the proximity between the measured values in repeated measurements, under specified conditions; that is, there is more precision the closer the values of different measurements ar
In summary, accuracy is how close a measurement is to the true value, while precision is how close the values of several measurements are to a point.
Accuracy and precision are independent of each other. The results in the values of a measurement can be precise and not exact (and vice versa).
This caseIn an experiment, a researcher measures the mass of an object and gets the following results: 6.08 g, 6.07 g, 6.13 g, 6.09 g.
So, the measurement is quite precise, since the results of each individual measurement are quite similar.
Also, the actual mass of the object is known to be 6.10 g, so the measurement can be considered accurate.
In summary, the results are accurate and precise.
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1- explain the carbon cycle on earth including the various where it is stored. 2- list at least two ways you can shrink your carbon footprint.
Please I need a help
Answer:
Explanation:
1. The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.
2. learn the 5 R's: refuse, reduce, reuse, rot, recycle: Going zero waste is a great step towards combating climate change. ...
bike more and drive less: ...
conserve water and protect our waterways: ...
eat seasonally, locally, and more plants: ...
switch to sustainable, clean energy
researchers suggest a dose of at least grams of protein per meal is ideal to promote muscle synthesis.
A dose of at least 20-25 grams of protein per meal is suggested by researchers as ideal to promote muscle synthesis.
The intake of the said amount of quality protein is believed to maximize muscle protein synthesis in adults. This rate is, however, highly dependent on the type of other macronutrients present and consumed. Any extra protein above this level is oxidized to release energy or converted to form organic acids and urea.
Studies show that protein intake is maximum during dinner, about 28 grams. The breakfast gives about 15 grams of protein. However, ideally, more protein should be consumed during breakfast.
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20 to 25 grams of protein per meal is an ideal dose in order to promote muscle synthesis.
Proteins are basically the building blocks of the muscles which are present in our body while the muscle protein synthesis or MPS is a naturally occurring metabolic process in which there is an incorporation of the amino acids into the bound muscle skeleton proteins.
20 to 25 grams of protein per meal is said to be an ideal dose in order to promote muscle synthesis. However, the metabolism of the protein is dependent upon a number of different factors like the age of individual, the amount of lean body mass etc.
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Considering what you know about oxygen, carbon dioxide, photosynthesis and cellular respiration to explain what is happening with regard to these two gases in the image?
A. Plants require oxygen for photosynthesis and produce carbon dioxide. Plants then use the carbon dioxide produced in cellular respiration, releasing oxygen as a byproduct
B. Plants, as autotrophs, only undergo photosynthesis and both use and produce oxygen and carbon dioxide in this process
C. Plants require carbon dioxide for photosynthesis and produce oxygen as a byproduct. Plants then use the oxygen released in cellular respiration, producing carbon dioxide as a byproduct D. Unlike animals, plants use carbon dioxide in cellular respiration and produce oxygen
Answer:
D
Explanation:
Plants require carbon dioxide for photosynthesis and produce oxygen as a by-product. Plants then use the oxygen released in cellular respiration. So the correct option is C.
What is photosynthesis?Green plants and certain other creatures convert light energy into chemical energy through a process called photosynthesis. Light energy is gathered and utilized during photosynthesis in green plants to change the water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.
It is hard to overstate the role that photosynthesis plays in sustaining life on Earth. There would eventually still be food or other organic materials on Earth if photosynthesis stopped. The majority of life would vanish, and eventually, the atmosphere of Earth would contain almost no gaseous oxygen.
Only chemosynthetic bacteria, which can use the chemical energy of certain inorganic substances and are not reliant on the conversion of light energy, would be able to survive in such an environment.
Therefore the correct option is C.
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What is the differences of mitosis and meiosis
mitosis refers to the parts of the original nucleus into two nuclei. On the other hand, meiosis refers to each having half chromosomes of the original cell.
in mitosis, there is the maintenance of chromosomes takes place while meiosis leads to a reduction in the no. of chromosomes. There are no variations in mitosis and variants occur in meiosis.
hence at last we can say that the above are the major difference between mitosis and meiosis. All of the explained differences will clearly lead to identifying them in particular. mitosis and meiosis plays a vital role in formation of gametes.
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difference between ct scan and mri for headaches
When a scan is required to assess a headache disorder, an MRI with contrast is recommended because it is a more accurate test than a CT and does not expose the patient to radiation.
A CT scan cannot detect some diseases, which is where MRI really shines. Some cancers, like prostate cancer, uterine cancer, and specific liver cancers, are virtually undetectable or extremely challenging to find on a CT scan. An MRI also provides a better image of brain and bone metastases. Because it is so sensitive, there are frequently abnormal findings unrelated to the headache that could necessitate additional testing.
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please help answer the 3 questions
1. The flattened form of objects like leaves. inside the respiratory system, the alveoli. the gastrointestinal system's villi. 2. While turtles have specialized excretory openings, fish have gills.
What modification is necessary for a successful gas exchange, one example?Alveoli modifications:
Moisture-filled walls: Gases dissolve in the moisture, which makes it easier for them to cross the gas exchange surface. Gases can travel through permeable walls. large blood supply, ensuring that blood rich in carbon dioxide is transported to the lungs and blood rich in oxygen is removed from the lungs.
Compare the Australian Fitzroy River turtle's gas exchange system to that of fish.Gills are found in fish, while specialized excretory openings are seen in turtles. These gaseous exchange systems have a huge surface area, a plentiful blood supply, and are ventilated by water movement for a sharp gradient in concentration. The main distinction is where the gas exchange surface is located.
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Mendel's observation of the segregation of alleles in gametes formation has its basis in which of the following phase in Meiosis?
Recently many of flordias citrus trees have been affected by a bacterial disease called citrus greening insects of a particular species that feed on citrus trees transmit the bacteria into the tree
Answer:
D
Explanation:
If you develop a tree that can resist bacteria and stay healthy you can eat it
( this is just my opinion but i believe this is correct)
B. Liverworts (Hepatophyta)
1. Observe the living green "leafy" gametophyte stage at Station A. These organisms have leaf-
like, stem-like, and root-like structures. Draw and label structures of the liverworts. Be sure
to include labels of the following items: gametophyte, n, sporophyte, 2n, rhizoides, leaf-like
structures, and thallus.
2. Use the dissecting scope and look at the sporophyte, gametophore, rhizoides, and thallus.
What do you notice? Write down some observations of each.
3. Compare the moss to the liverworts. How are they similar and how are they different?
Answer:
Explanation:
Title: Observation of Liverworts (Hepatophyta)
Objective: To observe the living green "leafy" gametophyte stage of liverworts and compare them with moss.
Hypothesis: Liverworts and moss may share some similarities in structure, but there may be significant differences between them.
Observations:
Liverworts Structures:
Gametophyte: The main plant body of the liverwort, which is haploid (n) and produces gametes.
Sporophyte: A structure that grows from the gametophyte and produces spores. It is diploid (2n).
Rhizoides: Root-like structures that anchor the gametophyte to the substrate and absorb water and nutrients.
Leaf-like structures: Flattened structures that resemble leaves but do not have true veins or stomata.
Thallus: The entire plant body of the gametophyte, which lacks true stems or roots.
Observations of different structures in liverworts:
Sporophyte: Small and inconspicuous, growing from the gametophyte.
Gametophore: The stem-like structure that supports the gametophyte and sporophyte.
Rhizoides: Thread-like structures that attach the gametophyte to the substrate and absorb water and nutrients.
Thallus: The plant body of the gametophyte that lacks true stems or roots.
Comparison between liverworts and moss:
Similarities:
Both are non-vascular plants.
Both have a haploid (n) gametophyte and a diploid (2n) sporophyte stage.
Both reproduce by spores and require water for fertilization.
Differences:
Liverworts have leaf-like structures and a thallus, while mosses have true leaves and stems.
Liverwort sporophytes are small and inconspicuous, while moss sporophytes are tall and conspicuous.
Liverworts have rhizoides, while mosses have true roots.
When population overshoots the carrying capacity,
may result.
A. exponential growth
B. a population crash
C. a population cycle
ОО
D. logistic growth
SUBMIT
Answer:
B. Population crash
Explanation:
Occurs due to an exceeding of carrying capacity.