Practice Questions

TLS Online TPP Program

#Question id: 4995

It has been found that certain proteins of the complex motor that drives bacterial flagella are modified versions of proteins that had previously belonged to plasma membrane pumps. This is evidence in support of the claim that

#Unit 11. Evolution and Behavior

some structures are so complex that natural selection cannot, and will not, explain their origins.
the power of natural selection allows it to act in an almost predictive fashion, producing organs that will be needed in future environments.
the motors of bacterial flagella were originally synthesized abiotically.
natural selection can produce new structures by cobbling together parts of other structures.

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TLS Online TPP Program

#Question id: 10254

#Unit 6. System Physiology – Plant

Sucrose is split into its two monosaccharide units—glucose and fructose—which can readily enter the glycolytic pathway. Two pathways for the splitting of sucrose are known in plants, both of which take part in the use of sucrose from phloem unloading; Invertase pathway and sucrose synthase pathway, some statements are given about these pathways, which of the following is incorrect?

TLS Online TPP Program

#Question id: 10253

#Unit 6. System Physiology – Plant

Two pathways for the splitting of sucrose are known in plants, both of which take part in the use of sucrose from phloem unloading;

TLS Online TPP Program

#Question id: 9268

#Unit 6. System Physiology – Plant

The most active photosynthetic tissue in higher plants is the

TLS Online TPP Program

#Question id: 9271

#Unit 6. System Physiology – Plant

Chlorophylls a and b are abundant in green plants, and c and d are found in some protists and cyanobacteria. A number of different types of bacteriochlorophyll have been found; which type of chlorophyll is the most widely distributed, shows the distribution of pigments in different types of photosynthetic organisms;