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TLS Online TPP Program

#Question id: 2893

Which of the following statement regarding the Nucleosome-remodeling complexes is CORRECT?

#Unit 2. Cellular Organization

  1. SWI/SNF found in all eukaryotic cells that together remodel chromatin so that nucleosomes become more regularly spaced, and inhibit the binding of transcription factors.

  2. Some members of a third family, SWR1, are involved in deposition of the H2A.Z histone variant transcriptionally active chromatin.

  3. SWI (switching) was discovered as a protein required for repression of certain genes involved in mating-type switching in yeast.

  4. The complex of GCN5 (general control non derepressible) and ADA (alteration/deficiency activation) proteins was discovered during investigation of the regulation of nitrogen metabolism genes in eukaryotes.

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TLS Online TPP Program

#Question id: 5097

#Unit 5. Developmental Biology

The embryonic precursor to the human spinal cord is the ________.
TLS Online TPP Program

#Question id: 5098

#Unit 5. Developmental Biology

The term applied to a morphogenetic process whereby cells extend themselves, making the mass of the cells narrower and wider, is ________.
TLS Online TPP Program

#Question id: 5099

#Unit 5. Developmental Biology

Which of the following is common to the development of birds and mammals?
TLS Online TPP Program

#Question id: 5100

#Unit 5. Developmental Biology

During frog development, the blastocoel ________.
TLS Online TPP Program

#Question id: 5101

#Unit 5. Developmental Biology

Which of the following correctly matches the extraembryonic membrane with its function?
TLS Online TPP Program

#Question id: 5102

#Unit 5. Developmental Biology

Why was the evolution of the extraembryonic membranes crucial for colonization of land by the vertebrates? Extraembryonic membranes ________.