Enzymes Flashcards Preview

The Human Cell > Enzymes > Flashcards

Flashcards in Enzymes Deck (17)
Loading flashcards...
1

Enzymes increase the rate of reaction by up to three or more orders of magnitude by?

By providing an alternative reaction pathway with a lower activation energy

2

Enzymes are usually specific to what?

One particular reaction

3

What is the primary structure of a protein

The primary structure of a peptide or protein is the linear sequence of its amino acid structural units

4

what is the secondary structure of a protein

within the long protein chains there are regions in which the chains are organised into regular structures known as alpha-helices (alpha-helixes) and beta-pleated sheets

5

what is the tertiary structure of a protein

The term protein tertiary structure refers to a protein's geometric shape, the 3d monomer structure

6

what is the quaternary structure of a protein

quaternary structure is the number and arrangement of multiple folded protein subunits in a multi-subunit complex. protein-protein polypeptide-polypeptide interactions

7

Give an example of a non protein enzyme

ribozymes

8

what is a ribozyme

A ribozyme is a ribonucleic acid (RNA) enzyme that catalyzes a chemical reaction. The ribozyme catalyses specific reactions in a similar way to that of protein enzymes

9

list three things that ribozymes can catalyse

1. formation of peptide bonds - condensation reaction in growing peptide chain (mrna translation)
2. rna splicing
3. trna synthesis

10

enzymes normally end in the suffix ase, however they can end with 'in' give three examples of enzymes in the lyase 4 family which end in 'in'

trypsin, pepsin and renin

11

the enzyme commission recognises how many major enzyme families

six

12

what is the first major enzyme family

oxidoreductase enzymes

13

what is the second of the major enzyme families

transferase enzymes

14

what is the third of the major enzyme families

hydrolase enzymes

15

what is the fourth of the major enzyme families

lyase enzymes

16

what is the fifth of the major enzyme families

isomerase enzymes

17

what is the sixth of the major enzyme families

ligase enzymes