Practice Questions

TLS Online TPP Program

#Question id: 7146

In Drosophila, the neuroectoderm is located ventrally during gastrulation, while in mice or frogs, the neuroectoderm is located dorsally. Which statement best describes how the two systems are similar or different?

#Unit 5. Developmental Biology

There are no similarities between flies and vertebrates in development of the nervous system.
Although gastrulation is completely different in invertebrates and vertebrates, the formation of a neural tube is identical in the two types of animals.
There is little similarity, since the neuroectoderm of invertebrates forms their nervous system with no further morphological changes, while in vertebrates, the neural tube forms a bundle of neurons running along the antero-posterior axis called the spinal cord.
Although the invertebrate nervous system is a ventrally located nerve cord, and the vertebrate spinal cord is located dorsally, homologous genes play a role, and neurons are ultimately specified through a process of lateral inhibition in both cases.

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TLS Online TPP Program

#Question id: 15010

#Unit 8. Inheritance Biology

The phenomenon where half the "normal" level of functional protein is not enough to generate a normal phenotype is called haploinsufficiency. Which of the following situations demonstrates haploinsufficiency?

TLS Online TPP Program

#Question id: 23840

#Unit 2. Cellular Organization

The length of the myosin II neck domain determines the

TLS Online TPP Program

#Question id: 106

#Unit 1. Molecules and their Interaction Relevant to Biology

fatty acid designated as 20:0 is ________, while one that is designated 20:3 D5,8,11 is

TLS Online TPP Program

#Question id: 5377

#General Aptitude

The average weight of A,B and C is 48kg , If the average weight of A and B be 45kg and that of B and C be 50kg ,Find the weight of B

TLS Online TPP Program

#Question id: 31102

#Unit 2. Cellular Organization

Which of the following statements are correct regarding the actin polymerization?

a) the concentration of G-actin is above the Cc, the filament end will grow

b) the concentration of G-actin is below the Cc, the filament end will grow

c) (+) end of microfilament polymerization is much faster than the (-) end

d) D form that adds to the filament and the T form that leaves