Answer:
Low oxygen pressures in the blood cause the nervous system to respond with hyperventilation.
Explanation:
In our body, the partial pressures of oxygen in the blood is a marker of blood pressure and hyperventilation.
The partial pressure of this gas may be decreasing due to lack of partial pressure of oxygen in the atmosphere that we breathe or in the great respiratory demands, that is why in this case, the partial pressures of oxygen during the marathon decrease.
When decreasing, this is captured by the nervous receptors and the CNS executes an increase in respiratory rate, generating hyperventilation so that the partial pressure of oxygen increases.
These receptors are chemoreceptors, capable of detecting the slight drop in blood pH due to oxygen deficiency associated with hemoglobin, since metabolic acidity is very common in cases of low oxygenation.
Which statement accurately describes effective scientists? a. They try to publish as much work as possible to seem more important. b. They prefer to deal with questions that involve opinions and personal preferences. c. They are willing to believe in ideas, even if there is no supporting evidence. d. They usually accept what they hear from others. e. They are open to results that change, or even refute, a previously accepted idea.
Answer:
e. theyre open to results that hanfe or even refute a perviously accepted idea.
A changeable factor in an experiment is referred to as a
Answer:
A Variable
Explanation:
The Challenger set out to accomplish... colonization. colonization. fighting an enemy. fighting an enemy. biological exploration. biological exploration. soundings of the ocean.
Answer:
The Challenger set out to accomplish biological exploration.
Explanation:
The Challenger Expedition was a sea expedition devised by Professor Charles Wyville Thomson and his student John Murray. The expedition began in 1872 and was supported by the British government and the Royal Navy of Great Britain.
The expedition was made inspired by Darwin's voyages and had as main objective to make a biological exploration of the ocean, researching, mainly, the possibility of existence of marine life below 549 meters, where it was believed that life was impossible due to the high pressure and the total absence of light.
A magnetic field protects Earth from the Sun's high-energy particles. What two processes are involved in the formation of Earth's magnetic field? The movement of materials in Earth's mantle and Earth's rotation the movement of metals in Earth's core and Earth's rotation the movement of solar wind toward Earth and Earth's revolution the movement of eruptions from the Sun's surface and Earth's revolution
Answer:
B.) The movement of metals in Earth's core and Earth's rotation
Explanation:
got a 100 on the Test
The two processes that are involved in the formation of Earth's magnetic field are the movement of metals in Earth's core and Earth's rotation. The correct option is B.
What is a magnetic field?A magnetic field is a place near a magnet in which a physical field is created with the electric charge. The field applies a great force on the other objects which come into this physical field.
Earth's core is the center point of earth, which is in a molten state and contains a high amount of iron. The core of the earth maintains the revolving of the earth as it is attracted by a magnetic field.
Due to gravitational force, the earth rotates on its axis and around the sun. Earth takes around 24 hours to revolve on its axis and 365 days in revolving around the sun.
Thus, the correct option is B. the movement of metals in Earth's core and Earth's rotation.
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Why does a fever cause a life threatening problem?
Answer:
A fever is a temporary increase in your body temperature, often due to an illness. Having a fever is a sign that something out of the ordinary is going on in your body.
Explanation:
Energy that’s produced after light reaction
I think this is the answer
A quantity must be divided by multiples of ten when converting from a larger unit to a smaller unit. Please select the best answer from the choices provided OT OF
Answer: False
Explanation: You're supposed to have numerically more smaller units than bigger units, since a lot of these smaller units are combined to create a single larger unit.
Read the claim. Breakfast is an important meal. It jump starts the body's process of using calories to break down food. Appetite can decrease with age, but going too long without eating causes metabolism to slow down. Current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. Who might benefit from this claim? A. People who have a fast metabolism B. Stores that sell exercise equipment C. People who take vitamin supplements D. Grocery stores that sell legumes
Answer:
D Grocery stores that sell legumes
Explanation:
Grocery stores can use this information so persuade shoppers to buy legumes
Answer:
Grocery stores that sell legumes.
What is the difference between a experimental group and a control group?
Explanation:
An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.
What activation energy was used to start the chemical reaction in the burning marshmallow?
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, let's understand some terms
Activation energy is the minimum amount of energy required for a reaction to proceed. Under normal condition, when the activation energy is high, it takes longer for the reaction to proceed than when it is low.
The burning of marshmallow is an exothermic reaction as it involves the transfer of heat energy into the environment.
your 7. What do you think about science? What do you like? What do you dislike? Support your answer with details from experiences. Write a paragraph consisting of at least 5-7 sentences.
what do you think about science from your own experiences we cant answer this for you
i think science is an interesting and essential subject, mainly i like the fact that having knowlege of biology,etc can help patients and sick people. Its obvious science is an important subject. But science cant explain everything, like about religion for instance scientists say the universe is created from big bang but religious people say god made it , so yeah. I mostly love science because of how amazing doctors are, helping people and all.
Below are the seven properties of water that make life possible on Earth. Describe five of these properties and provide an example of each: Hydrogen bonding, cohesion and adhesion, surface tension, heat of vaporization, specific heat, density, and universal solvent
Answer:
Properties of water are given below.
Explanation:
Hydrogen bonding is an important bond which occurs between two water molecules which make them sticky due to partial positive charge on hydrogen and partial negative charge on oxygen. Cohesion and adhesion occurs due to the attraction of partial positive and partial negative charges of hydrogen and oxygen atom. Density of water increases with the decrease in temperature and maximum at 4 degree Celsius and after further decrease in temperature, decrease in density occurs which is a unique property of water. water is a universal solvent because a large amount of solutes can be dissolved in it. Heat of vaporization refers to the amount of heat required to transform liquid into vapors.Water has a heat of vaporization about 40.65 kJ/mol.
What is the basic function of a cell?
Answer:
Cells provide six main functions. They provide structure and support, facilitate growth through mitosis, allow passive and active transport, produce energy, create metabolic reactions and aid in reproduction.
Explanation:
Which of the following are theories? Select all that apply.
A. Detergent type does not affect how well a t-shirt stain is removed.
B. Earth's crust is divided into plates that are in constant motion.
C. The rate of plant growth is dependent on how much light is present.
D. If a bucket of water is left uncovered, then it will evaporate faster.
E. All matter consists of tiny particles called atoms.
Answer:
A
Explanation:
Because b,c,d can be proven
while a is not proven
The theory is detergent type does not affect how well a t-shirt stain is removed. Thus Option A is correct.
What is Theory ?A principle formed to explain things, certain phenomena, or fact which was validated previously known as Theory.
It can be speculation of any assumption which need to be proved.
Further more an ideal theory must be an authoritative principle, which is a result of continuous observation, proper examination, analysis logically accurate explanation of a specific phenomenon.
The characteristics for ideal theory are, it must possess the quality and authenticity.
A wide acceptance by people and the quality should be evaluated correctly.
It must solve the problems potentially and expert verified, confirmed hypothesis.
It must have the ability to analyze the past events, have some descriptive approach for a particular topic.
Thus Option A is correct.
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Relate similarities or differences between fish and scuba divers and they operate in water?
Fish can survive without scuba diving equipment, while scuba divers can not.
Fish were born and raised in the water, not like scuba divers.
Fish have gills that help them get air from the water, while humans do not.
Answer:
Breathing
Explanation:
Scuba divers need self-contained underwater breathing apparatus and they need equipment which helps them breathe comfortably while underwater, fish live there so they can breathe.
They both can swim and see other sea animals.
what are four places a scientist can go to find information about a problem
1. Collect information
2.observation
3.measure
4.communicate
Explanation:
collect
observe
communicate
Why football player moves to higher altitude to play before world cup??
:By training at high altitudes, athletes aim to allow their bodies to produce extra red blood cells
sweating when its hot outside is an example of which characteristic of life
Answer:
Homeostasis
Explanation:
Sweating helps to control internal body temperature, and homeostasis is when an organism maintains a controlled internal environment
Were are wolves mostly found or more common?
Bleaching is caused by the addition of bleach containing fertilizers that enter marine systems through runoff. True False
Answer:
False
Explanation:
Help me out with this please
If an element contains six electrons, how many will be placed in the second valence shell?
A. 8
B. 4
C. 2
D. 6
Answer:
A. 8
Explanation:
The 2s subshell holds a maximum of 2 electrons, and the 2p subshell holds a maximum of 6 electrons. Which means that the second shell can hold a maximum of only 8 electrons (2+6 = 8)
A student uses one hand to examine the interior structure of a bean seed. What kind of visual screen would be better? for the student to use to record what they observe data table labeled sketch line graph pie chart
Which of the following is not an example for abiotic factor: a)rain b)salinity c)biodiversity d)humidity
Answer:
C
Explanation:
Biodiversity involves living organisms while the rest of the options do not
what are the three main functions of the brain?
Answer:memory , movement , body , the nervous system
Explanation:
Answer:
blood pressure, breathing, heart rate
Explanation:
Why is the shape of a protein so important?
Answer:
The shape of a protein is important because it determines whether the protein can interact with the other molecules.Describe the importance of water being a polar molecule.
Answer:
Because of water's polarity it can dissolve other polar substances very easily. Basically, when a polar substance is put in water, the positive ends of its molecules are attracted to the negative ends of the water molecules, and vice versa. This attraction causes the the molecules of the other substance to mix with the water.
Which statement best represents how structure relates to function? a. Some insects live longer than others. b. Many tropical birds can be taught to speak. c. Great white sharks have sharp serrated teeth for tearing into their prey. d. horse's mane is often black.
Answer:
C. Great white sharks have sharp serrated teeth for tearing into their prey.
Explanation:
I took the quiz.
Adaptation is the evolutionary process that allows the natural selection of the species. Great sharks having sharp teeth for tearing into prey are structures related to functions. Thus, option c is correct.
What is adaptation?Adaptation has been defined as the mechanism by which biological species adjust themselves to the changes in the environment around them in an ecosystem. This leads to the evolution of the structures and functions.
The sharp teeth structures of the white shark allow them the function of catching their prey in the ocean ecosystem. These structures were adapted for the survival of the species and to catch food.
Therefore, option c. the sharp teeth of great white sharks are the adapted structures that allow them to catch prey.
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What is one of the signs of a chemical change?
A.change of position
B.change of state
C.change of color
D.change of shape
Answer:
C. Change of color
Explanation:
Answer:
c
Explanation:
the chemical will change if it has anything different with it. it'll change colors
The enzyme carbonic anhydrase is a protein that binds to two small molecules: water and carbon dioxide. By holding the two molecules in the proper position, the enzyme allows the two molecules to react to form a product, carbonic acid. The enzyme then releases the product and becomes available to catalyze the same reaction once again. How does carbonic anhydrase change the reaction between carbon dioxide and water?
Answer:
Chemical groups on the surface of the enzyme reduce the reaction's ... 100,000 carbon dioxide and water molecules into carbonic acid every second but ... What fraction of energy available in the chemical bonds of glucose actually ... The resulting three carbon molecule, lactic acid, builds up as a waste product inside cells.
The hydrolysis of carbon dioxide into carbonic acid or bicarbonate would not occur without carbonic anhydrase. Therefore, only 15% of the carbon dioxide produced by the body would be removed from the tissues by the blood.
What is the importance of carbonic anhydrase?At least 80% of the bicarbonate transported throughout the entire kidney occurs in the proximal tubule and is mediated by proton secretion.
Bicarbonate is created when carbon dioxide is hydrated by carbonic anhydrase and subsequently dissociates into hydrogen ions and bicarbonate.
As a result, they are categorized as metalloenzymes. The enzyme helps move carbon dioxide while preserving the acid-base equilibrium.
Therefore, Similar to other epithelial, carbonic anhydrase is widely distributed in renal tissue and works to catalyze the hydration-dehydration process of CO2.
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