Freediving is an activity in which a person dives, sometimes to great depth, without the use of scuba gear. the diver must hold his or her breath for the duration of the dive. (the record depth, with no equipment such as diving fins, is 101 m; the official record time is over 11 minutes.) historically, freediving has been used by pearl divers and sponge divers. some freedivers hyperventilate (breathe rapidly and deeply) before diving. hyperventilation can change the concentration of co2 in the blood and may inc
Freediving involves diving without scuba gear, and divers must manage pressure and buoyancy without the aid of equipment. Rapid ascent can cause decompression sickness due to the formation of gas bubbles in the blood. Hyperventilation prior to diving can change CO2 concentration in the blood.
Explanation:Freediving is an activity where a person dives underwater without the use of scuba gear, often holding their breath for extended periods. Factors such as pressure, buoyancy, and gas solubility play significant roles in the diver's experience underwater. When divers descend, pressure increases, causing the body's air pockets in the ears and lungs to compress. During ascent, these air pockets expand due to decreased pressure. Rapid ascents can lead to decompression sickness, also known as the bends, as dissolved gases in the blood become bubbles, causing various medical conditions. Therefore, divers need to ascend slowly or make several decompression stops.
Hyperventilation before diving can change the concentration of CO2 in the blood. However, no matter the methods used to prepare for a dive, challenges such as decompression sickness and the physiological changes brought on by pressure changes are complex and intriguing areas of research in the field of diving biology.
Learn more about Freediving here:https://brainly.com/question/27991338
#SPJ12
What is chemical energy? How does radiant energy transform into chemical energy?
20 POINTS!
Which term can be applied to a population that is not in Hardy-Weinberg equilibrium? large stable stagnant evolving
Answer:
Evolving.
Explanation:
The Hardy-Weinberg equilibrium emphasizes that if evolutionary factors such as natural selection, mutation, migration and genetic oscillation do not act on a given population, gene frequencies and genotypic proportions will remain constant. This means that if there are, for example, alleles B and b in a population, they do not change their rates over a long period of time. These rates would only change if evolutionary mechanisms occurred.
For this reason, we can say that "evolving" is the term that can be applied to a population that is not in Hardy-Weinberg equilibrium.
Why do you think discoveries in genetics have been recognized with so many nobel prizes?
Final answer:
Discoveries in genetics have been recognized with many Nobel Prizes due to their impact on our understanding of inheritance, evolution, and human health.
Explanation:
Discoveries in genetics have been recognized with many Nobel Prizes due to the significant impact they have had on our understanding of inheritance, evolution, and human health. These discoveries have advanced our knowledge of how traits are passed down from one generation to another, the role of DNA in storing genetic information, and the mechanisms of genetic diseases. For example, the discovery of the structure of DNA by Watson, Crick, and Wilkins led to a better understanding of how DNA replication and protein synthesis occur, which revolutionized the field of genetics.
Which convention is not used when working with amino acids?
What fraction of u.s. physicians out of total physicians are specialists and subspecialists?
Answer:
Only 1/3 of US doctors are specialists and subspecialists.
Explanation:
An expert doctor is one who works with a specific field of medicine (such as an endocrinologist who deals only with hormonal issues, for example). A subspecialist doctor is another doctor who specializes in some organ or, what is often occurring, some specific disease.
This type of professional requires a long time of study and a great economic expense with the academic specialization, therefore, there are fewer specialist doctors and subspecialists than genealogical doctors, as general practitioners, who although they study a lot, can practice the profession in a shorter time period. It is estimated that only 1/3 of doctors in the US are specialists and subspecialists.
A physician notices that a certain drug (md) that is used to control depression, also causes her patients to gain 40 lbs in 4 months. she gave a placebo to another group of patients and they did not gain weight and their depression episodes were not controlled. she presents the data on her subjects at a scientific meeting. choose the most complete answer to explain her findings.
True or false the barfoed's test and the benedict's test indicate similar
Proteins and carbohydrates perform various functions in the body. They are needed for the proper development and growth of the body. Breaking carbohydrates into their subunits will yield _____ as products. Breaking down proteins will yield _____as products.
Monosaccharides
amino acids
fatty acids
The proteins and carbohydrates are the two of the four biological macromolecules. The proteins and carbohydrates are the polymers made of the monomeric units amino acids and monosaccharides, respectively. When during the process of digestion, these macromolecules are broken up, they lead to the formation of their constituting monomeric units. The breaking down of carbohydrates yield monosaccharides, and the breaking of protein yields amino acids.
Hence, the blanks can be filled with 'monosaccharides and amino acids' respectively.
What is one of the primary functions of this food in the body?
Answer:
To provide energy to build new cells and tissue
Explanation:
What component of Earth’s atmosphere exists entirely as a result of photosynthesis?
(01.01 LC)What type of questions cannot be solved by scientific methods?
Which part of the nervous system would carry messages from a person's sore knee to alert him or her to stop running and rest?
The somatic nervous system in conjugation with the central nervous system is responsible for sensing the knee pain and sending the signal to the brain to stop running and rest. These systems work together to control voluntary actions and perceive pain.
Explanation:In the scenario where a person's knee hurt while running, the part of the nervous system responsible for notifying the person to stop running and rest is the somatic nervous system working in conjugation with the central nervous system. The somatic nervous system controls the voluntary movements of the body, including running. This system via peripheral nerves in the leg detects the soreness in the knee and relays this pain signal to the central nervous system, which involves the brain and the spinal cord. The brain perceives the pain and decision to stop running and rest is made. Similarly, conditions such as 'Runner's knee' are detected by this unique interaction of the somatic and central nervous systems.
Learn more about Nervous System here:https://brainly.com/question/24255030
#SPJ12
Some native peoples of south america use the drug curare to poison the tips of their hunting arrows. when an animal is struck by the arrow, it goes limp and quickly suffocates. why?
The reason why the animal that has been struck by the arrow goes limp and quickly suffocates because the acetylcholine receptor sites are blocked and this was made possible because of the drug curare they use in poisoning the top of the arrows.
According to the Food Code, proper food labels should NOT contain:
Answer;
The date that frozen preparation-needed foods are to be consumed.
Explanation;
-According to the Food Code, proper food labels should NOT contain the date that frozen preparation-needed foods are to be consumed.
-Food labels are important as they can help limit the amount of fat, sugar and cholesterol in ones diet by making it easy for them to compare one food item with another and choose the one with lower amounts.
-Proper food labels should include; what the product is , when the food should be consumed by and also the best way to store the food item.
An alcoholic would have overactive ___ in their liver cells.
An alcoholic would have overactive alcohol dehydrogenase system in their liver cells. The alcohol dehydrogenase system metabolizes ethanol in the liver by converting it into acetaldehyde.
Explanation:An alcoholic would have overactive alcohol dehydrogenase system in their liver cells. The liver metabolizes alcohol using two main processes, the alcohol dehydrogenase system and the microsomal ethanol oxidizing system (MEOS). About 80 to 90% of the hepatic ethanol uptake is processed via the alcohol dehydrogenase system, which converts ethanol into acetaldehyde.
Since acetaldehyde is toxic, it must be further degraded by acetaldehyde dehydrogenase into acetate, a non-toxic molecule. Therefore, an alcoholic would have overactive alcohol dehydrogenase enzymes in their liver cells to metabolize the excessive amounts of alcohol.
Why were US parks originally developed?
Prokaryotic and eukaryotic cells do all cells have the same structure worksheet answers
Prokaryotic and eukaryotic cells have different structures. Prokaryotic cells, found in organisms like bacteria, are simpler and lack a nucleus and other membrane-bound organelles. Eukaryotic cells, found in animals, plants, fungi, and protists, are more complex with a true nucleus and various membrane-bound organelles.
Explanation:Prokaryotic and eukaryotic are two types of cells that are distinct in their structures. Prokaryotic cells are simpler and they are typically found in microorganisms like bacteria. Some unique characteristics include the lack of a nucleus and other membrane-bound organelles. They have a singular circular chromosome that is housed in the nucleoid region of the cell. On the other hand, eukaryotic cells are more complex and are found in animals, plants, fungi, and protists. They have a true nucleus that houses multiple, linear chromosomes and a variety of other organelles like the mitochondria, endoplasmic reticulum, golgi bodies and more that are all encapsulated within membranes. Thus, not all cells have the same structure because it varies depending on whether the cell is prokaryotic or eukaryotic.
Learn more about Cell Structures here:https://brainly.com/question/31349292
#SPJ6
Electrolytes are A. anabolic compounds. B. organic compounds. C. ionized salts. D. catalysts.
Electrolytes are the minerals given externally to provide energy. They have a charge to balance the pH and fluid as they are ionized salts that can conduct electricity. Thus, option C is correct.
What are electrolytes?
Electrolytes are fluids that comprise minerals and are in the form of ions that are electrical conductors due to the presence of the charge. They are essential for survival as many metabolic and automatic processes occur and rely on electrolytes.
Many fruits, vegetables, and chemicals like potassium, sodium, and calcium are rich sources of electrolytes. Its balance is vital in the body as it plays a crucial part in pH and osmosis. Its unbalance can lead to dehydration, water retention, weakness, seizures, etc.
It can be treated and given as oral rehydration therapy and electrolyte replacement therapy, where the electrolytes are injected orally or through IV to maintain their balance in the body.
Therefore, the electrolytes are ionized salts.
Learn more about electrolytes here:
https://brainly.com/question/15212009
#SPJ2
Why do you think that some biomes have experienced so much more habitat loss than others
Butene has two isomers—one with methyl groups on the same side of the double bond and the other with methyl groups on the opposite side. What kind of isomers are these?
The isomers of butene with methyl groups on the same side and on opposite sides of the double bond are called geometric isomers, specifically cis-2-butene and trans-2-butene.
The isomers described are examples of geometric isomerism, which is a type of stereoisomerism. The cis isomer has both methyl groups on the same side of the double bond, whereas the trans isomer has the methyl groups on opposite sides. The restriction on rotation around the double bond creates two distinct molecules, cis-2-butene and trans-2-butene, which differ in physical properties such as boiling point due to the different placements of the methyl groups.
Most carbohydrates and biological molecules are hydrophilic. what chemical property is shared by lipids
Final answer:
Lipids are generally hydrophobic due to their long hydrocarbon chains, which make them water-insoluble. However, compounds like phospholipids have amphipathic properties with both hydrophobic and hydrophilic regions.
Explanation:
The chemical property shared by lipids, which includes a range of biological molecules such as triglycerides, phospholipids, steroids, and prostaglandins, is their hydrophobic nature. This refers to the tendency of lipid molecules' long hydrocarbon chains to be unattracted to water and, therefore, insoluble in aqueous environments. However, some lipids, like phospholipids, display an amphipathic character due to the presence of both hydrophobic (the fatty acid tails) and hydrophilic (the phosphate group head) regions within the same molecule.
Describe
processes that occur while an organism is alive but cease when it is dead
This type of epithelial tissue lines the fallopian tubes, uterus, and some bronchioles of the respiratory tract.
Iowa, illinois, and indiana would experience clouds caused by all of the lifting mechanisms, except _____.
What happens to the amount of light as you go deeper in an aquatic system
Sunlight entering the water may travel about 1,000 meters (3,280 feet) into the ocean under the right conditions, but there is rarely any significant light beyond 200 meters (656 feet).
The ocean is divided into three zones based on depth and light level. The upper 200 meters (656 feet) of the ocean is called the euphotic, or "sunlight," zone. This zone contains the vast majority of commercial fisheries and is home to many protected marine mammals and sea turtles.
Only a small amount of light penetrates beyond this depth.
The zone between 200 meters (656 feet) and 1,000 meters (3,280 feet) is usually referred to as the “twilight” zone, but is officially the dysphotic zone. In this zone, the intensity of light rapidly dissipates as depth increases. Such a miniscule amount of light penetrates beyond a depth of 200 meters that photosynthesis is no longer possible.
The aphotic, or “midnight,” zone exists in depths below 1,000 meters (3,280 feet). Sunlight does not penetrate to these depths and the zone is bathed in darkness.
What are the functions of the cytoskeleton? check all that apply. to provide the cell shape. to provide scaffolding for the enzymes in certain areas of the cell. to organize the cell's activities. to provide movement of molecules in the cell. to assemble ribosomes?
The cytoskeleton acts as a support structure for cells and helps in organizing cell activities and movement of molecules within the cell.
The cytoskeleton is a network of protein filaments that provides structural support to cells and plays a crucial role in a variety of cellular functions. The main functions of the cytoskeleton include:
Providing cell shape: The cytoskeleton helps maintain the shape of the cell by providing structural support.Organizing the cell's activities: It helps in the organization and positioning of various cellular components, including the organelles.Providing movement of molecules in the cell: The cytoskeleton is involved in the movement of molecules within the cell, such as vesicles and organelles.However, the cytoskeleton does not have a direct role in providing scaffolding for enzymes in certain areas of the cell or in assembling ribosomes.
Learn more about Cytoskeleton here:https://brainly.com/question/33510889
#SPJ6
research indicates that the effectiveness of goal setting can be doubled by the addition of feedback.
a. True
b. False
Iaia is the notation used to describe one possible genotype. how many blood type genotypes are possible?
Which best describes technology?
A. The creative use of science to solve problems
B. Government regulation of science
C. The process of research
D. The society of humans on Earth
which best describes technology?
your answer is: A. The creative use of science to solve problems