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TLS Online TPP Program

#Question id: 5131

Differentiated cells express the genes and proteins characteristic of their final identity in the adult, and that identity can be altered only under special circumstances. How does the concept of differentiation, as described here, differ from the concept of determination?

#SCPH01 Biochemistry

  1. Determined cells have begun to differentiate, but are not fully differentiated.

  2. Determined cells are embryonic cells that will give rise to all the cell types of the adult organism, but have not yet begun to express the genes and proteins characteristic of their final fates.

  3. Determined cells will continue to follow their fate if grafted into a different place in a host embryo, even though they do not yet express the genes and proteins characteristic of their final fate.

  4. Determined cells are embryonic cells that will form certain cell types and structures if development is allowed to proceed normally, but will alter their development in response to their location if transplanted to a different place in a host embryo.

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TLS Online TPP Program

#Question id: 12375

#SCPH28 | Zoology

When lichens grow on bare rock, they may eventually accumulate enough organic material around them to supply the foothold for later rooted vegetation. These early pioneering lichens can be said to do what to the later arrivals?
TLS Online TPP Program

#Question id: 3509

#SCPH06 I Botany

Principle of independent assortment apply for those gene that is
TLS Online TPP Program

#Question id: 10712

#SCPH28 | Zoology

Researcher study the diversity of 4 communities, following is relative abundance of each species at different community? ( ln .5 = -0.69  , ln .25= -1.38, ln .12= -2.12)

Which of the following is decreasing order of their Shannon weaver diversity index of community?
TLS Online TPP Program

#Question id: 9201

#SCPH06 I Botany

Erwin and Scott used an insecticidal fog to knock down insects from the top section of a L. seemannii tree. The researchers identified over 900 species of beetles among the individuals that fell. Erwin also projected that this entire tree from top to bottom is host to about 600 arthropod species that are unique to this tree species and not found on any other tree species. There are approximately 50,000 species of tropical trees. Although it could not be entirely accurate, what would be the best way to estimate the total number of arthropod species?
TLS Online TPP Program

#Question id: 18605

#SCPH01 Biochemistry

Thermal modulation are used in PCR for the functions of