For a muscle to contract in a cell, chemical reactions that involve a positive change in the amount of free energy available take place. Which of the following best describes the impact of these reactions in the cell? ( 2 points) They cause an increase in total entropy. They move the cell toward equilibrium. They occur spontaneously as they give off heat. They require energy to be absorbed to proceed.

Monitor and apply fix up stratorgies

What is the correct trna sequence that would match the following mrna sequence.gcgaua

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis