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TLS Online TPP Program

#Question id: 21250

A 56-year-old female was diagnosed with a tumor near the base of the skull, impinging on her optic tract. Which of the following statements about the central visual pathway is correct?

#Unit 7. System Physiology – Animal
  1. The fibers from each temporal hemiretina decussate in the optic chiasm, so that the fibers in the optic tracts are those from the temporal half of one retina and the nasal half of the other
  2. In the geniculate body, the fibers from the nasal half of one retina and the temporal half of the other synapse on the cells whose axons form the geniculocalcarine tract.
  3. Layers 2 and 3 of the visual cortex contain clusters of cells called globs that contain a high concentration of cytochrome oxidase.
  4. Complex cells have a preferred orientation of a linear stimulus and, compared to simple cells, are more dependent on the location of the stimulus within the visual field.
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TLS Online TPP Program

#Question id: 31366

#Unit 5. Developmental Biology

Which one of the following mRNAs can rescue the ventral structures of dorsalized Xenopus embryo when injected into it?
TLS Online TPP Program

#Question id: 2604

#Unit 2. Cellular Organization

Best inducer of the lac operon;
TLS Online TPP Program

#Question id: 14961

#Unit 8. Inheritance Biology

Drosophila females are capable of storing sperm and using it to fertilize eggs long after mating. How might this present a problem for a geneticist?
TLS Online TPP Program

#Question id: 28170

#Unit 5. Developmental Biology

Below the figure showing that the cell has the capacity to differentiate into particular kinds of cells and achieve their fates, with or without influencing neighbouring cell is referred to as___
TLS Online TPP Program

#Question id: 26541

#Unit 3. Fundamental Processes

Which of the following activities are found in TFIIH  
a. ATPase
b. helicases
c. kinase
d. Ubiquitinylate