Answer:
The correct option is 'c'
The archaea and bacteria diverge from early eukarya.
Explanation:
The cell wall material is different from archaea with bacteria as the cell wall of archaea lack peptidoglycan and contain lipid and hydrocarbons rather than fatty acid but the cell wall of bacteria contain peptidoglycans.
Archaea and bacteria both derived from eukarya as they both have similarities with eukarya.
The similarity between archaea and bacteria is that they both share lateral gene transfer.
There are similar features that are seen between archaea and bacteria like protein secretion,ATP production,protein modification etc.
Both bacteria and eukarya belongs to prokaryotes and the membrane of both eukarya and bacteria contain unbranched fatty acid chain that are attached to glycerol with ester bond.
Answer:
The correct answer will be-
1. Nucleosomes
2. Chromatin
3. Sister chroamtid
4. Centromere
Explanation:
The DNA is a very long molecule which if has to be passed on to the daughter cell as it is will cause problems. So, to reduce problems a cell form tightly packed structure of DNA so that they can be passed easily to the daughter cell.
The packaging of DNA begins with the wrapping of the DNA around histone proteins which forms the 11 nm basic structural units called nucleosomes. The nucleosomes start condensing each other and form 30 nm structure chromatin fibres.
The chromatin fibres undergo replication during S phase which produces an exact copy of the chromatin called sister chromatids bound to each other at a central point called centromere which helps the separation of the chromatids during M phase.
Answer:
I'm sorry but you should do it on your own because if you don't you won't learn the way you should and plus that is cheating.
Activation of muscle contraction could be a speedy event that's initiated by electrical activity within the surface membrane and transversal (T) tubules. This can be followed by unharness of metal<span> from the inner membrane system, the sarcoplasmic reticulum.
</span>Nervous stimulation causes a depolarization<span> of the muscle membrane (sarcolemma) </span>that<span> triggers </span>the discharge<span> of </span>calcium<span> ions from the sarcoplasmic reticulum.</span>