what are you asking just to be clear
B) the internal pressure is less than atmospheric pressure.
C) the internal pressure is greater than atmospheric pressure.
D) the compliance of the lung decreases.
E) the lungs recoil.
Answer:
(B) the internal pressure is less than atmospheric pressure.
Explanation:
The process of respiration is divided into two distinct phases, inspiration (inhalation) and expiration (exhalation). During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs.
Hence, as the thoracic cavity increases in volume the lungs are pulled from all sides to expand, causing a drop in the pressure (a partial vacuum) within the lung itself. As such the internal pressure is less than atmospheric pressure.
During expiration, diaphragm contracts inferiorly and thoracic muscles pull the chest wall outwardly (the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases). As a result, the lungs contract and air is forced out.
During inhalation, air continues to move into the lungs until the internal pressure is the same is atmospheric pressure. Correct option is A.
During inhalation (inspiration), the diaphragm and other respiratory muscles contract, expanding the thoracic cavity. This expansion increases the volume of the lungs, leading to a decrease in the internal pressure within the lungs. As a result, the air from the surrounding atmosphere (which has higher pressure) flows into the lungs, filling them with fresh oxygen. Inhalation continues until the internal pressure in the lungs equals the atmospheric pressure, at which point the flow of air stops, and the lungs are filled with the appropriate amount of air for that particular breath. This process is essential for proper gas exchange, where oxygen is taken into the bloodstream and carbon dioxide is expelled from the body during exhalation (expiration).
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There is no chance to change the amino acid sequence if any change occurs in the DNA or RNA sequence is an advantage of having more than one codon for the same amino acid.
Genetic code is the information of the gene which codes into the amino acid which makes the particular protein.
DNA has information that is passed to the RNA by the process of transcription and this RNA sequence makes a triplet codon which makes an amino acid.
This code is universal and shows redundancy, by this more than one codon makes the same amino acid, if any nucleotide sequence change occurs between the DNA and RNA, there is no effect on the protein sequence.
Therefore, protein is the linear sequence of amino acid if any change occur in the one codon, but leads to create the same amino acid, do not affect the protien.
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Light energy is converted to chemical energy during photosynthesis.
O Oxygen is made from the breakdown of carbon dioxide during photosynthesis.
O Energy is absorbed by chlorophyll during photosynthesis.
The sun gives off light energy that is absorbed by plants.
Answer:
Light energy is converted to chemical energy during photosynthesis.
Explanation:
The first law of thermodynamics, which is the LAW OF CONSERVATION OF ENERGY, states that energy can neither be created nor destroyed but can only be changed from one form to another. This law explains that the energy that exists cannot be made or destroyed, it can only be transformed from one of Its form to another.
The biological process of photosynthesis illustrates this law. Photosynthesis is the synthesis of organic molecules from inorganic molecules using the energy from sunlight. Plants, via their Chlorophyll pigment capture the light energy from the sun and use it to produce their food in form of organic molecules/glucose. This glucose is a chemical compound that stores energy in its chemical bonds.
Hence, photosynthesis supports the law of conservation of energy by changing/converting light energy from sun into a chemical energy in food (glucose).