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ki77a [65]
4 years ago
7

The boundary between the external and middle ear is the:

Biology
1 answer:
solniwko [45]4 years ago
8 0

Answer:

Tympanic membrane. (Ans. A)

Explanation:

Tympanic membrane: It is known as thin semitransparent eardrum, which is formed boundary between the external and middle ear. It's diameter is about 0.3-0.4 inch, and cone shaped membrane. Tympanic membrane is found in humans, and other tetrapods.

Its playing an important role in to transfer sounds which is present in the air to the ossicles inside the middle ear, then to the oval window of the fluid-filled cochlea.

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If the DNA nucleotides read 3'-ATG-CGT-GAC-5', the amino acid sequence of the resulting polypeptide
Marat540 [252]

Answer:

5’ – TAC-GCA-CTG-3’

Explanation:

As per the Chargaff’s complementary base pairing rule purine always pairs with a pyrimidine.  

Purines include adenine (A) and cytosine (C)

Pyrimidine include thymine (T) and guanine (G)

Thus an A always pair with T and C always pair with G

Thus, the resulting poly peptide for the given amino acid sequence is  

3'-ATG-CGT-GAC-5'

5’ – TAC-GCA-CTG-3’

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Answer:

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nadezda [96]

Answer:

D. All three primary germ layers develop into some more type of nervous tissue

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