Answer to Question 1
In transformational grammar, deep structure refers to an underlying syntactical structure that links various phrase structures through various transformation rules. In contrast, surface structure refers to any of the various phrase structures that may result from such transformations. Many casual readers of Chomsky have misunderstood Chomsky's terms. They incorrectly inferred that deep structures refer to profound underlying meanings of sentences, whereas surface structures refer only to superficial interpretations of sentences. This is not the case. Chomsky meant only to show that differing phrase structures may have a relationship that is not immediately apparent by using phrase-structure grammar alone.
Answer to Question 2
A phoneme is the smallest unit of speech sound that can be used to distinguish one utterance from another (i.e., to change the meaning of a word). In English, phonemes are made up of vowel or consonant sounds, like a, i, s, and f. For example, the word sit contains the phonemes /s/, /i/, and /t/, and by changing the phonemes we can change the meaning of sit to sat, fat, and fit. Different languages use different numbers and combinations of phonemes. North American English has about 40 phonemes. Hawaiian has about 13 phonemes. Some African dialects have up to 60.
Appendectomy. The appendix and cecum are brought through the incision to the surface of the abdomen.
Hematoma. A hematoma around the right eye caused by an injury. A hematoma is the result of bleeding
The Chemical Structure of DNA DNA is composed of nucleotide pairs.
Nephron Structure
How to find the volume and surface area of any triangular prism
Crystal structure of telomerase catalytic subunit from the red flour beetle