Natural Products

Questão 1 de 13

1

In specimen collection the plant must be dried and kept sterile to minimise damage

Selecione uma das opções:

VERDADEIRO
FALSO

Explicação

Questão 2 de 13

1

Which of the following is best to aid identification of the natural product/plant

Selecione uma das seguintes:

plant handbook
flora or field guide
herbarium

Explicação

Questão 3 de 13

1

macerated leaves are treated with chemicals that gradually decrease in polarity to extract chemicals

Selecione uma das opções:

VERDADEIRO
FALSO

Explicação

Questão 4 de 13

1

Selecione das listas do Menu para completar o texto.

General screening bioassays are ( simple, complex ), ( inexpensive, expensive ) and used for ( rapid screening, specific enzyme screening ) of extracts

Explicação

Questão 5 de 13

1

Selecione das listas do Menu para completar o texto.

specialised screening bioassays are ( subcellular, multicellular ) assays directed at ( specific, broad spectrum ) enzymes or receptors. Compounds working by mechanisms unrelated to the assay are likely to be missed.

Explicação

Questão 6 de 13

1

which of the following is FALSE

Selecione uma das seguintes:

Brine shrimp lethality tests are used to determine cytotoxicity (potential antitumour) of extracts
crown gall tumour inhibition tests give a fairly accurate prediction of in vivo murine antileukemic activity
starfish or sea urchin assays are used to investigate in vivo antileukemic activity
agar dilution streak assay means up to 7 microorganisms can be screened simultaneously on a petri dish
microtitre plates allow testing of 3 dilutions of one or two extracts against up to 24 microorganisms

Explicação

Questão 7 de 13

1

crown gall tumour inhibition tests use potatoes to measure inhibition of growth

Selecione uma das opções:

VERDADEIRO
FALSO

Explicação

Questão 8 de 13

1

which 3 do starfish or sea urchin assays allow detection of?

Selecione uma ou mais das seguintes:

dna and rna synthesis inhibitors
mRNA substrate inhibitors
microtubule assembly inhibitors
protein synthesis inhibitors

Explicação

Questão 9 de 13

1

Clique no ponto laranja e selecione a resposta correta.

which best applies to an agar dilution streak assay?

Explicação

Questão 10 de 13

1

Clique no ponto laranja e selecione a resposta correta.

Which tlc staining technique is used to test acidic groups

Explicação

Questão 11 de 13

1

which one of the following is not considered in NP isolation or synthesis

Selecione uma das seguintes:

source - availability
environmental and local impact
cost
complexity of novel structures
diluent needed

Explicação

Questão 12 de 13

4

Selecione das listas do Menu para completar o texto.

What are the stages of natural product processing? ( Specimen, Taxonomy, molecules, structure ) collection, establishing ( taxonomy, specimen, molecules, therapeutics ), extracting possible active molecules, using ( screening, showing, therapeutic, herbariums ) techniques to evaluate therapeutic activity, identifying and ( isolating, burning, melting, releasing ) the structure responsible for the activity, using organic synthesis

Explicação

Questão 13 de 13

2

Selecione das listas do Menu para completar o texto.

a range of techniques are used to isolate active compounds (fractionation). these include ( TLC, LTC, MSMS ), column chromatography, ( HPLC, ELISA, SPE ) and combinations such as HPLC/MS

	Criado por Sam Watkins mais de 8 anos atrás

a quiz on natural product extraction and tests

Natural Products

Questão 1 de 13

In specimen collection the plant must be dried and kept sterile to minimise damage

Selecione uma das opções:

Explicação

Questão 2 de 13

Which of the following is best to aid identification of the natural product/plant

Selecione uma das seguintes:

Explicação

Questão 3 de 13

macerated leaves are treated with chemicals that gradually decrease in polarity to extract chemicals

Selecione uma das opções:

Explicação

Questão 4 de 13

Selecione das listas do Menu para completar o texto.

General screening bioassays are simple complex( simple, complex ), inexpensive expensive( inexpensive, expensive ) and used for rapid screening specific enzyme screening( rapid screening, specific enzyme screening ) of extracts

Explicação

Questão 5 de 13

Selecione das listas do Menu para completar o texto.

specialised screening bioassays are subcellular multicellular( subcellular, multicellular ) assays directed at specific broad spectrum( specific, broad spectrum ) enzymes or receptors. Compounds working by mechanisms unrelated to the assay are likely to be missed.

Explicação

Questão 6 de 13

which of the following is FALSE

Selecione uma das seguintes:

Explicação

Questão 7 de 13

crown gall tumour inhibition tests use potatoes to measure inhibition of growth

Selecione uma das opções:

Explicação

Questão 8 de 13

which 3 do starfish or sea urchin assays allow detection of?

Selecione uma ou mais das seguintes:

Explicação

Questão 9 de 13

Clique no ponto laranja e selecione a resposta correta.

which best applies to an agar dilution streak assay?

Explicação

Questão 10 de 13

Clique no ponto laranja e selecione a resposta correta.

Which tlc staining technique is used to test acidic groups

Explicação

Questão 11 de 13

which one of the following is not considered in NP isolation or synthesis

Selecione uma das seguintes:

Explicação

Questão 12 de 13

Selecione das listas do Menu para completar o texto.

Explicação

Questão 13 de 13

Selecione das listas do Menu para completar o texto.

a range of techniques are used to isolate active compounds (fractionation). these include TLC LTC MSMS( TLC, LTC, MSMS ), column chromatography, HPLC ELISA SPE( HPLC, ELISA, SPE ) and combinations such as HPLC/MS

Explicação

General screening bioassays are ( simple, complex ), ( inexpensive, expensive ) and used for ( rapid screening, specific enzyme screening ) of extracts

specialised screening bioassays are ( subcellular, multicellular ) assays directed at ( specific, broad spectrum ) enzymes or receptors. Compounds working by mechanisms unrelated to the assay are likely to be missed.

a range of techniques are used to isolate active compounds (fractionation). these include ( TLC, LTC, MSMS ), column chromatography, ( HPLC, ELISA, SPE ) and combinations such as HPLC/MS