Cells prevent mutations during DNA replication by using their mechanisms which are mismatch repair, direct repair, base excision repair, and nucleotide excision repair.
Answer:
A. He has a large buildup of lactate in his muscles.
Explanation:
Ideally, our body cells, via the process of aerobic cellular respiration, need oxygen to break down glucose. However, during rigorous activities or exercises, oxygen can become unavailable for use. In this case, the body cells switch to use another way of cellular respiration, which is FERMENTATION.
This fermentation causes a build up of lactic acid/lactate (its byproduct) in the cells of the muscles being used, which physically causes a burning and aching sensation just as the case of this hiker. The climbing of the steep path is causing causing the fast usage of oxygen in his cells.
Answer:
6.5 cm
Explanation:
Mechanical advantage is a measure of efficiency or performance of a tool or machine in terms of force amplification which is done by the machine or tool. In simple terms, it measures that at what extent the applied force is increased with the help of tool or machine.
Mathematically, it is the ratio of force produced by the tool or machine to the force actually applied to the tool.
In terms of effort length and resistance length, it is calculated as -
Mechanical advantage = 
Thus, Mechanical advantage = 
= 6.5 cm.
I believe the answer you are looking for is
A) true
