Answer:
The sodium-potassium pump moves potassium
ions into the cell and sodium
ions out of the cell.
Explanation:
Here are the answers.
1. Runoff from the land in a <em>stream’s watershed</em>……….
2. And water from its <em>tributaries</em>.
3. At the stream’s headwaters, the <em>gradient</em>………..
4. The greater the water speed, the larger the <em>stream load</em>………..
5. Which is made up of: a) <em>suspended load</em>, b) <em>dissolved load</em>, c) <em>bed load</em>
6. Under these conditions a <em>braided stream</em> may form
7. Where gradient flattens, a <em>meander</em> may form
Answer:
D. They are the direct cause of global warming, which is causing changes to precipitation patterns, storms, and other weather events.
Explanation:
Increased levels of greenhouse gases are causing global warming, but have no observed effect directly on precipitation and weather patterns.
Answer:
B. They can release harmful toxins
Answer:
a) decreased chromatin condensation.
Explanation:
Chromatin Condensation is the reordering of the long thin chromatin strands into pact short chromosomes that occurs in mitosis and meiosis. Decreased in chromatin condensation is depicted by a reduction in the volume of Chromosomes which is brought by certain Histone modifications. For example as given in the question; increasing acetylation of amino acids in histone tails takes place on the NH3+ groups of Lysine amino acid residues which therefore decreased chromatin condensation.
This is because increased acetylation take away the positive charge on the histones, thus decreasing the interaction of events occuring between the N-terminai tails of histones with the negatively charged phosphate groups of DNA. The effect of that event therefore contributes to the decrease chromatin condensation.