Organism, Species, Population, Community, Ecosystem, Biome, Biosphere
Answer: Substances that are protein based cannot cross the lipid cell membrane, but can exert their effect by binding to the proteins based receptors present on the lipid bilayer.
Explanation:
Hormones such as calcitonin , Parathyroid hormone and pituatry horomones are proteins and water soluble.They cannot cross lipid bilayer but can bind to ligand binding protein receptors.
These receptors are protein macromolecules that are specific in nature for specific hormones.
After binding to the receptors, these hormone-recpetor complexes activate second messengers and regulate the downstream effects.
The proteins move through the endomembrane system and are dispatched from the trans face of the Golgi apparatus in transport vesicles that move through the cytoplasm and then fuse with the plasma membrane releasing the protein to the outside of the cell.
Answer:
The structures they have in common are nucleus, vacuole, cell wall and membrane.
Explanation:
The structures they have in common are nucleus, vacuole, cell wall and membrane and these structures perform different functions.
The nucleus is a membrane bound organelles found in the cell that regulate all cellular activities like metabolism.
Vacuole is a structure found in the cell cytoplasm which is use for storage, digestion, excretion and so on.
Cell wall is a layer surronding the cell to give rigidity, protect and give structural support to cells.
Membrane is a structure that separate the internal of the cells from the exterior or environment.
Answer:
The given blank can be filled with pleomorphic.
Explanation:
Pleomorphism, in microbiology, refers to the tendency of some of the microbes like bacteria to change their size or shape in response to the environmental conditions. In the context of bacteriology, pleomorphism is based upon the change in the shape or size of the cell, in spite of a change of shape as considered previously.
