#Question id: 21254
#Unit 12. Applied Biology
Match the following plant sources with their secondary metabolites and medical uses;
SOURCES PLANT |
SECONDARY METABOLITES |
USE |
P. Coleus blumei |
i. Atropine |
a. Insecticidal |
Q. Atropa belladonna |
ii. Reserpine |
b. Cardiac tonic |
R. Trianthema portucalastrum |
iii. Rosamarinic acid |
c. Muscle relaxant |
S. Digitalis lanata |
iv. Phytoecdysones |
d. Antioxidant |
#Question id: 10134
#Unit 6. System Physiology – Plant
Some herbicides such as dichlorophenyldimethylurea (DCMU, also known as diuron) and paraquat, block photosynthetic electron flow from where ?
a.) DCMU blocks electron flow at the quinone acceptors of PSII, by competing for the binding site of plastoquinone that is normally occupied by PQB
b.) Paraquat accepts electrons from the early acceptors of PSI and then reacts with oxygen to form superoxide, O2 – , a species that is very damaging to chloroplast components
c.) DCMU blocks electron flow at the pheophytin acceptors of PSII, by competing for the binding site of pheophytin
d.) Paraquat accepts electrons from the Iron-sulfur system of PSI and then reacts with oxygen to form superoxide, O2 – , a species that is very damaging to chloroplast components
Which of the following combination is true?
#Question id: 4303
#Unit 3. Fundamental Processes
Which component is not directly involved in translation?
#Question id: 23247
#Unit 13. Methods in Biology
#Question id: 23361
#General Aptitude