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TLS Online TPP Program
#Question id: 12285
#Unit 10. Ecological Principles
The principle of competitive exclusion states that
TLS Online TPP Program
#Question id: 33275
#Unit 2. Cellular Organization
Which of the following is the central player in chromosome segregation?
a. Interpolar microtubules
b. Astral microtubules
c. K-fibers
TLS Online TPP Program
#Question id: 8718
#Unit 9. Diversity of Life Forms
Which of the following would, if it had acted upon a gene, prevent this gene from acting as a reliable molecular clock?
TLS Online TPP Program
#Question id: 9596
#Unit 6. System Physiology – Plant
The reaction centre chlorophyll is transiently in an oxidized state after losing an electron and before being re-reduced by its electron donor, what characteristics has been shown by chlorophylls in an oxidized state?
TLS Online TPP Program
#Question id: 10139
#Unit 6. System Physiology – Plant
There are two distinct forms of rubisco. Form I is found in vascular plants, algae, and cyanobacteria; form II is confined to certain photosynthetic bacteria, Some statements about the Rubisco is given;
a.) A complex form I structure with eight identical large subunits each containing a catalytic site, and eight identical small subunits of uncertain function
b.) The form II rubisco of photosynthetic bacteria is simpler in structure, having two subunits that in many respects resemble the large subunits of the plant enzyme
c.) The plant enzyme has an exceptionally low turnover number; only three molecules of CO2 are fixed per second per molecule of rubisco at 25 o C
d.) Rubisco makes up almost 50% of soluble protein in chloroplasts and is probably one of the most abundant enzymes in the biosphere
Which of the following statements about rubisco will true?