<u>Question subitems:</u>
1. When the climber ascends the mountain before acclimating, __to restore homeostasis within the body.
2. As the climber rehydrates and rests at a basecamp, hemoglobin (Hb) is produced, which is the body's response to the stress. As a result, __
3. When the climber returns to sea level before re acclimating, __ to restore homeostasis within the body.
4. As the climber re acclimates to sea level, hemoglobin is replaced at a lower rate, decreasing hemoglobin concentrations in the blood. As a result,
<u>Explanation:</u>
1) <u> So the equilibrium will shift to release O2</u>
2) <u>The body will try to restore the amount of oxygen in blood so it will produce Hb and shift to the production of HbO2</u>
3) <u>The higher oxygen concentration will trend to increase the formation of HbO2</u>
4) <u>The equilibrium will shift to the release of O2</u>
Explanation:
DNA replication is a process common to both prokaryotes and Eukaryotes with few differences and similarities.
<u>Differences:</u>
1. Origin of replication (ori) : is a sequence of the genome where initiation of replication takes place. Prokaryotes have only single ori while eukaryotes have multiple ori as the DNA is large in eukaryotes so require multiple or to replicate whole DNA.
2. Replication site: prokaryotes lack nucleus where DNA is present in the cytoplasm while eukaryotes posses nucleus which encloses DNA. Therefore, replication takes place in cytoplasm in prokaryotes while in the nucleus in eukaryotes.
<u>Similarities:</u>
1. Enzymes: both posses same enzymes for DNA replication like DNA helicase, primase, polymerase.
2. The direction of synthesis: the enzyme DNA polymerase synthesizes new strand of DNA in the same direction that is 5' to 3' direction.
Thus, marked answer in the table are correct answer.
Rods are responsible for vision at low light levels so B
When a cell undergoing cellular division identifies that a chromosome misalignment had taken place the cell cycle stops until the error it's corrected.
Option two of the question states that the cell cycle will <u>proceed uncontrollably, this is not the case for the error at hand</u>. Although this can be a problem for cells and leads to the appearance of cancer, it is not caused by chromosome misalignment. As is the case with options 3 and 4.
The stop or delay in the <u>cell cycle is what normally takes place in these situations.</u> This stoppage is done by the <em><u>spindle checkpoint</u></em>, which prevents <u>duplicate chromosomes from separating.</u>
During this time, the error it's corrected. If a cell is not able to correct the error at this time, many situations can follow. <u>However, the most likely is that the cell will undergo a <em>programmed cellular death.</em> </u>
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