Answer:
Explanation:i dont know tbh
The longest period of time is 11 minutes and 35 seconds.
Answer:
Option). It permits hydrogen bonds between DNA strands to dissociate.
Explanation:
PCR (polymerase chain reaction) techniques can bed defined as a technique, which is used for in vitro amplification of sample DNA. It is made up of three steps, denaturation, primer annealing, and extension.
The first step in PCR is heating of sample DNA to denature the double stranded DNA by breaking hydrogen bonding present between bases of double stranded DNA.
Due to this, double strands of DNA get separated and provide templates for synthesis of daughter DNA strands.
Thus, the correct answer is second option.
The statement above is FALSE.
There are differences in the complex interactions that are formed with the host's system when a bacterial or viral infection occur and the two types of infection do not progress through similar sequences of events during immune response. The body system usually react to disease causing bacteria by increasing the local blood flow and signalling appropriate cells to attack the bacteria. For virus, virus are usually very adaptive to their host's system and therefore are very good at escaping the immune system. The body system has put in place many mechanisms to prevent this. The specific sequence of immune response depend on the type of virus and its interaction with the host cells.
Answer:
Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. ... A food chain can usually sustain no more than six energy transfers before all the energy is used up.
Explanation:
