Cells in the developing embryo are in constant communication with their neighbors, and the molecules they use to send and receive signals are essential for normal embryogenesis. Several intracellular signaling pathways have been identified, some of which are activated in response to secreted growth factors.
Acid fast bacteria are bacteria with cell walls that contain special acids called mycolic acids. Like other bacteria they also have peptidoglycan. Mycolic acids are long chains of fatty acids...
1 Answers 1 viewsStaphylococcal food poisoning results from consuming contaminated food. The food is contaminated by toxins produced by staphylococci. The symptoms are vomiting and diarrhea. Treatment usually involves drinking plenty of fluids.
1 Answers 1 viewsShort NotesNuclear Export of mRNA The expression of eukaryotic genes is controlled by several mechanisms. Its regulation is considered to be critical for physiological responses associated with intracellular and extracellular signals....
1 Answers 1 viewsIn most cases, drugs move through the cellular membrane via passive diffusion down its concentration gradient. This transport does not require any expenditure of energy. Passive transport depends on the...
1 Answers 1 views(i) Type Specimens Type specimens are particular specimens or illustrations of organisms with certain scientific name. They represent part of collections maintained by museums and universities where they can be...
1 Answers 1 viewsType of bonds: Electrovalent bonds formed by either donating or accepting electrons.Covalent bonds formed by sharing of electronsMetallic bonds In metallic bonds, the valence electrons from the s and p...
1 Answers 1 viewsReceiving of the signal by the receptor. It includes binding the ligand to the appropriate receptor, then the receptor is transformed to perform the next stages. Transduction of the signal....
1 Answers 1 viewsBoth haploid and diploid cells can undergo mitosis. When a haploid cell undergoes mitosis, it produces two genetically identical haploid daughter cells; when a diploid cell undergoes mitosis, it produces...
1 Answers 1 viewsWrite short notes on:The Competitive Exclusion Principle The competitive exclusion principle is also known as the Gause’s Law states that “two species that exist in one niche and compete to utilize...
1 Answers 1 viewsMorphogenetic movements relate not only to gastrulation, but to embryonic development too. Morphogenetic movement in the early embryo takes place mainly through the movement and deformation of the epithelial cells,...
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