B. vibrate with the frequency of the received sound.
C. amplify the received sound.
D. carry the sound energy to the brain.
The middle ear's eardrum vibrates at the same frequency as the sound being heard, hence option B is correct.
Many species' ears serve as their sensory organs and as their hearing organs. Its structure may be broken down into three main sections: The outside ear, the Middle ear, and the Inner ear.
Pinna and ear canal make up the outer ear. Skin covers the hard cartilage that makes up the pinna. The pinna's primary job is to collect sounds and direct them into the ear canal. The middle ear may be reached through the eardrum.
The eardrum in the middle ear is what divides it from the outer ear. The eardrum vibrates when sound waves strike it at a specific frequency.
Therefore, the eardrum in the middle ear vibrates with the frequency of the received sound.
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The function of the eardrum in the middle ear is to vibrate with the frequency of the received sound.
Further Explanation:
Ear is the sensory organ of many organisms which performs the function of hearing.
Structurally it can be divided into three basic parts:
1. Outer ear
2. Middle ear
3. Inner ear
Outer ear consist of pinna and ear canal. Pinna is made up of tough cartilage which is covered by skin. The main function of the pinna is to gather sounds and to move them to the ear canal. Eardrum serves as the pathway that leads to the middle ear.
Middle ear consists of eardrum that separates them from the outer ear. When sound waves hits the eardrum, it vibrates with the frequency of the received sound.
The inner ear changes the vibrations coming from the middle ear to the nerve signals. The inner ear consist of cochlear and semicircular canal.
The cochlea changes the vibrational signal into nerve signals that travels to the brain through the auditory nerve. The function of semicircular canal is to maintain the body balance.
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Answer Details:
Grade: Middle school
Subject: Biology
Chapter: Sensory organs
Keywords:
Sensory organ, ear drum, outer ear, inner ear, middle ear, ear canal, pinna, nerve signal, cochlea, semicircular canal, brain, ear, auditory nerve.
Answer:
D.) All of the above
Explanation:
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b.Scientists should not get involved in decisions that affect modern society.
c. Scientists cannot provide accurate information on environmental issues such as global warming.
d. Scientists provide sound scientific data to help society make informed decisions.
B)He discovered how the DNA bases pair together.
C) He created the first accurate model of DNA's structure.
D) He extracted and observed DNA from white blood cells.
Friedrich Miescher (D) extracted DNA from white blood cells.
Further Explanation:
A geneticcode is the rules employed by the cell to translate info that are encoded in deoxyribonucleic acid or ribonucleic acid into protein. DNA or deoxyribonucleic acid is the hereditary material in humans and most the other living organisms. While ribonucleic acid or RNA is formed once deoxyribonucleic acid undergoes transcription. It contains the codes that are needed for protein synthesis (translation). The deoxyribonucleic acid and ribonucleic acid differ from one another in varied aspects like strand (DNA- double stranded, RNA- single stranded usually) Base pairs (DNA-ATGC; RNA-AUGC), Types, (DNA- A, B, Z type; RNA- RNA, rRNA, tRNA etc.). Friedrich Miescher isolated "nuclein" that is DNA along with related proteins from the cell nuclei in 1869. DNA as a definite molecule was 1st known by Friedrich Miescher. White blood cells usually abbreviated as WBC additionally called leukocytes are those cells that defend the body from contagious diseases additionally as foreign invaders that are observed as antigens. Thus, the right choice to this question is D that says that the contribution of Friedrich Miescher is that he extracted and discovered DNA from the white blood cells.
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Answer Details:
Grade: College Biology
Subject: Biology
Chapter: Molecular Biology
Keywords:
Genetic code, DNA, RNA, base pairs, protein synthesis, translation, transcription, double stranded, WBC, leukocytes, antigens, Friedrich Miescher, nuclein, cell nuclei.
Answer: D. all of the above