1) occluding junctions
2) anchoring junctions
3) communicating junctions
Occluding junctions do not totally seal the space between cells and the resulting permeability varies greatly. I would say anchoring junctions are most likely with one of the other 2 junctions being least permeable.
Answer:
Active transport of calcium into the sarcoplasmic reticulum.
Explanation:
- The sarcoplasmic reticulum (SR) is a membrane-bound structure found within muscle cells that is similar to the endoplasmic reticulum in other cells. The main function of the SR is to store calcium ions (Ca2+)
- In response to an action potential traveling along the t tubule, voltage-sensitive proteins change shape, opening calcium channels in the adjacent terminal cisterns of the sarcoplasmic reticulum.
all it needs is water, good temperature and some soil
What do mitochondria do? Where are they found?
They harvest chemical energy from food & carry out cellular respiration, the conversion glucose to ATP. They are found in cells of eukaryotes, except a few anaerobic protozoans. The ATP generating electron transport system is embedded in the inner membrane (cristae) and chemical reactions occur in compartments between membranes.
What are the functional categories of organelles?
Eukaryotic organelles comprise four functional categories: -manufacture (synthesis of macromolecules and transport within the cell), -breakdown (elimination and recycling of cellular materials - energy processing (conversion of energy from one form to another) -support, movement, and communication (maintenance of cell shape, anchorage, and movement of organelles, and relationships with extracellular environments) All four categories work together as an integrated team, producing the emergent properties at the cellular level.
So in smaller terms, I guess eukaryotic organelles do this.
