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ANH văn CHUYÊN NGÀNH 3

UNIT 4: ENZYMES – A VERY SPECIAL GROUP
OF PROTEINS

GVHD: Ths Tran Hong Bao Quyen
By: Group 8


Danh sách nhóm 8
HỌ VÀ TÊN










BÙI THỊ KIM ANH
HỒ VĂN BAN

NGUYỄN THỊ DUYÊN
PHẠM NGỌC HÀ
NGUYỄN THỊ THOA
NGUYỄN THỊ THU THỦY
LÊ THỊ THU THÚY
NGUYỄN HẢI VÂN

MSSV










10298741
10294481
10200721
10265761
10263841
10261391
10289881
10214421


ENZYME

(CONT)

Specific [spə’sifik] (adj): đặc hiệu, cụ thể
Substrate [‘sʌbstreit] (n): cơ chất
Starch [‘sta:tʃ] (n): tinh bột
Catalyst [‘kӕtəlist] (n): chất xúc tác
Require [ri’kwaiə] (v): phụ thuộc, đòi hỏi, cần đến
Unique [ju:’ni:k] (adj): duy nhất, độc đáo, khác thường, lạ thường
Attraction [ə’trӕkʃn] (n): sự thu hút, sự hấp dẫn, lôi cuốn
Tertiary structure: cấu trúc bậc ba

Three dimensional: không gian ba chiều
Explain [iks’plein] (v): giải thích
Fit [fit] (v): phù hợp, thích hợp, ăn khớp
Bond [bɔnd] (n): liên kết
Cleave [kli:v] (v): phân cắt
Selective [si’lektiv] (adj): có tính chọn lọc

VOC
A

BUL

A RY


Pa r a g r a p h 3
Enzymes act on specific molecules. The substrate is the substance on which the

New words

enzyme acts. A carbohydrase is an enzyme that acts on carbohydrate molecule and
breaks it down into smaller units. The specific enzyme that breaks down

specific:
đặc hiệu, cụ thể

carbohydrate maltose is called maltase. Carbohydrases break down carbohydrates
into monosaccharides. Amylase breaks down starches into smaller molecules.
Proteases break down protein into amino acids and peptides. There are additional
enzymes that function in the body.

substrate:
cơ chất
starches:
tinh bột


Pa r a g r a p h 4

New words



Enzyme are biological catalysts that provide a reaction pathway that
requires less energy than would otherwise be needed. But how do they do
this.

catalysts: chất xúc tác

requires: phụ thuộc, đòi hỏi, cần đến


Paragraph 4
(Cont)

New words

An enzymes combines with a reactant called a substrate. Each enzymes binds with a
specific substrate. The attraction of an enzyme to a substrate is called substrate
specificity. Proteins have a tertiary structure which gives them a three dimensional
shape. Since enzymes are proteins, they have a unique tertiary structure. Only a
certain substrate can react with a particular enzyme because of the unique structure.

Unique: duy nhất, độc đáo, khác thường, lạ thường
Attraction: sự thu hút, sự hấp dẫn, lôi cuốn
tertiary structure: cấu trúc bậc ba
three dimensional: không gian ba chiều


Paragraph 4
(Cont)
New words
The lock-and-key theory explains how enzymes and substrates
react. The enzyme is like a lock that has a special structure. The
substrate is like a key which has a special structure that will fit the
lock. Some enzymes are very specific in their reaction and others
are more general.

Explains: giải thích

Fit: phù hợp, thích hợp, ăn khớp


Paragraph 4
(Cont)
Some enzymes act on specific groups; for example, a transaminase transfers

New words

amino groups and decarboxylase removes carboxyl groups. Some enzymes
catalyze reactions that break specific types of bonds, for example, a protease
cleaves peptide binds. Some enzymes catalyze very specific reactions. Urease has
only substrate: urea. Therefore, enzymes are very selective molecules.

bonds: các liên kết
cleaves: phân cắt
selective: có tính chọn lọc


GAMESHOW

SPEED


RULES:



The game consists of 15 rows, each row is one new word in this unit. We will open letters one by one to discover
rows.



Every 10 seconds a letter in any of the rows will be opened, you can reply answers at any time, before all characters
are opened and time up.



After giving the correct answer, you have to translate it to Vietnamese. After that, you have to find out an any
sentence in paragraphs of unit 4 that compost of the row you have just discovered, say it aloud and translate it to
Vietnamese, too.




The time for each row divided into 3 parts with 3 levels of gifts.
At each row, you have only one opportunity to answer and throughout the game, you have only 2 opportunities to give
correct answer and receded maximum 2 gifts at all.



You answer continuously until any one gives correct answer. Not limit the number of people take part in the game.


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CHẤT XÚC TÁC

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PHÂN TỬ

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