Test 1 Vocabulary Chapter 3 Flashcards Preview

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Flashcards in Test 1 Vocabulary Chapter 3 Deck (39):
1

Adenine

Purine

1

Active site

Where the substrate connects

2

Allosteric regulation

Somewhere other than the active site
Noncompetitive (doesn't compete for active site)

3

Alpha helix

Secondary protein structure
Spiral

4

Amino acid

Organic compound

5

Beta pleated sheet

Type of protein in secondary structure

6

Catalyst

Chemical substance that accelerates a reaction

7

Competitive inhibitor

A non substrate that binds to the active site of an enzyme
Inhibits binding of substrate

8

Complementary base pairing

A-T/U
G-C

9

Cytosine

Pyrimidines

10

Denatured

Loss of activity of an enzyme or nucleic acid
Structural changes

11

DNA

Genes

12

Endergonic

Chemical reaction
Products have higher free energy
Require energy imput to occur

13

Enzyme

Catalytic protein that speeds up reactions

14

Enzyme - substrate complex

Intermediate in an enzyme catalyzed reaction

15

Exergonic

Chemical reactions
Release of free energy

16

Feedback inhibition

Regulating metabolic pathway

17

Guanine

Purine

18

Inhibition

Stop

19

Noncompetitive inhibitor

A non substrate that inhibits the activity of an enzyme by binding somewhere other than the active site

20

Nucleic acid

Polymer made up of nucleotides
Storage transmission and expression of genetic info

21

Nucleotide

Basal chemical unit in nucleic acids
Pentode sugar, phosphate group, nitrogen containing base

22

Peptide Linkage

bond between amino acids in a protein

23

Primary Structure (protein)

specific sequence of amino acids in a protein

24

Purine

nitrogenous base in a nucleic acid
A and G

25

Prymidine

nitrogenous base in a nucleic acid
C and T

26

Quaternary structure (protein)

3-D arrangement of protein subunits

27

RNA

single stranded nucleic acid whose nucleotides use ribosomes rather than deoxyribose

28

ribose

a small particle in the cell that is the site of protein synthesis

29

Secondary Structure (Protein)

localized regularities of a structure
alpha helix
beta pleated sheet

30

Side Chain

distinguishing group of atoms of a particular amino acid

31

Substrate

molecule on which an enzyme exerts a catalytic action

32

Tertiary structure (protein)

relative locations in 3-D space of all the atoms in the molecule

33

Thymine (T)

prymidine

34

Uracil (U)

RNA prymidine

35

Smooth ER

lacks ribosomes
has tubular appearacnce

36

Rough ER

surface has ribosomes

37

Golgi Apparatus

system of folded membranes found in cytoplasm of eukaryotic cells

38

Cytoskeleton

network of mictrotubules and micro filaments
gives shape