Basic Bio, just Short answer like few words only, answer them all and i will rat
ID: 88259 • Letter: B
Question
Basic Bio, just Short answer like few words only, answer them all and i will rate you
1-What is the difference between a resting membrane potential (RMP) and a transmembrane potential (TMP)? What is the primary mechanism responsible for a RMP?
2-How is it that all cells of your body (except gametes) have the same DNA yet there are approximately 200 different types of cells?
3-What’s the name of the cell that can increase blood calcium levels? What’s the name of the cell in which the entire bicarbonate buffer system works inside its cytoplasm? What’s the name of the cell that contains a brush border? What’s the name of the cell that makes connective tissue in your body?
4-What are the three germ layers of an embryo and which of the four principal tissue types do each give rise to?
5-What cells that you are born with essentially never divide again throughout life? How can you prove this?
6-Why are virtually all cells of the human body within 20 µm of a capillary?
7-What are the three components of a junctional complex? Which one is most apically located? Which one involves actin filaments? Which is primarily involved in preventing things from moving through the intercellular space?
Explanation / Answer
When nerve or muscles cells is at rest, its membrane potential is called resting membrane potential. Difference in the potential across the membrane when it is rest, means fully repolarized is called resting membrane potential.
Difference between the charges inside of the membrane to outside is called transmembrane potential. The basic difference between two potential is resting potential occur when cell is on rest. The potessium gradien generated by Na+/K+ ATPase as well as diffusion of small ion are the primary mechanism that involve in maintaining resting membrane potential.
2. All the cells of your body has same DNA except some specific cells such as erythrocytes and gametes. There is a 200 different type of cells because each cells uses gene differently. Each cells has same set of gene but its depend on cells which set of gene turn on and turn off. Here, different protein products are formed which decide structural and functional activity of cells not gene.
3. Osteoclasts is a large. Multinucleate bone cells that increase blood calcium level. In red blood cells entire bicarbonate buffer system works inside its cytoplasm. Villus cells have a brush border that is in small intestine. Fibroblast, adipocytes, macrophage, leucocytes and mast cells form connective tisssue in your body.
4. Three germ layers are ectoderm, mesoderm and endoderm. Four primary tissues are epithelial, muscles, nerve and connective tissue. Ectoderm will form nerve tissue , mesoderm give rise the connective tissue and muscle tissue and endoderm give rise the epithelial tissue.
5. Nerve cells in brain never divide again throuhout life because brain cells has long connection that they make from one cell to another. Those connections are crucial to do a right thing. If those cells are dividing make abrant connection so brain function can effect. To maintain the architecture of brain those cells are never divide.
7. Band of tight juction, band of anchoring junction and desmosome are 3 componant of junctional complex. Tight junction known as zona occuldance is most apically located structure. Anchoring junction involves actin filament. Tight junction prevent things from moving through the intercellular space.