The direct regulators of differential gene expression are typically cell surface
ID: 201226 • Letter: T
Question
The direct regulators of differential gene expression are typically
cell surface receptors.
Actin microfilaments are required for
transcription factors. enzymes. signaling molecules.cell surface receptors.
What happens to cells that fold inside the blastula during gastrulation in a triploblast? Select the three that apply. O They are in contact with the mesoderm. They become mesoderm. They become ectoderm. O They are continuous with the mesoderm O They are not necessary to the animal after gastrulation. O They form the lining of the gut cavity. U They become endodermExplanation / Answer
A) Transcription factors are the regulators of differential gene expression i.e., the expression of different genes by cells with the same genome. Transcription factors (TFs) are regulatory proteins function to activate transcription of DNA by binding to specific DNA sequences
B) Actin microfilaments are required for Amoeboid movement. They are required in muscle contraction, amoeboid movement and the streaming of particles within the cytoplasm of the plant cells.
C) During gastrulation, cells move in the interior of the cell via invagination, ingression, involution, epiboly forming a organized layers as ectoderm, endoderm and mesoderm.