Each chromosome (replicated or not) contains 2 chromatids.
The right answer is photosystem I
And the three protein complexes are : plastoquinone, cytochrome b6f complex, plastocyanin.
In plants, photophosphorylation occurs in the membrane of thylakoids, within chloroplasts:
H2O ==> photosystem II (which contains P680) ==> plastoquinone ==> cytochrome b6f complex ==> plastocyanin → photosystem I (which contains P700) ==> ferredoxin ==> ferredoxin-NADP + reductase ==> NADP +
Post-translational modifications of proteins makes them functional and include:
- methylation
- addition of disulphide bridges
- folding
- phosphorylation
<h3>What is post-translational modification of proteins?</h3>
Post-translational modifications of proteins refers to modifications that are made on new synthesized proteins after synthesis at the ribosomes.
Post-translational modifications of proteins are important as they help to convert the proteins into their active forms.
Some post-translational modifications of proteins include:
- methylation
- addition of disulphide bridges
- folding
- phosphorylation
Therefore, post-translational modifications of proteins are required to make proteins functional.
Learn more about proteins at:https: //brainly.com/question/884935
Answer:
The correct answer is "excretes; hypotonic; absorbs, hypertonic".
Explanation:
Cell's homeostasis is only conserved in an isotonic solution, since cells that are in an hypertonic solution (high salt concentration) tend to loss water, and in hypotonic solution (low salt concentration) tend to absorb water. Brine shrimp lives in waters that are both, hypertonic and hypotonic and has adapted to overcome this issue by excreting and absorbing salt across its gills. In very high salt concentrations, a brine shrimp "excretes" salt across its gills and maintains an internal salt concentration that is "hypotonic" relative to the water where it lives. In lower salt concentrations, a brine shrimp "absorbs" salt water across its gills and maintains an internal salt concentration that is "hypertonic" relative to the water where it lives.
Answer:
D
DNA, cytoplasm and cell membranes
